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2141 lines
56 KiB
2141 lines
56 KiB
;******************************************************************************
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;
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; Copyright (c) 1992 Insignia Solutions Ltd.
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;
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; Program:
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;
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; Purpose:
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;
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; Version:
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;
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; Author: Dave Bartlett
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; Modifications:
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; 1) Tim June 92. Changes to get DEC PC working. Take over
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; IVT entries 6h (illegal instruction), 11h (equipment
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; check), 16h (keyboard BIOS), 17h (printer),
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; 42h (default video).
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; 2) Tim June 92. Changed version to 1.11
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; 3) Tim June 92. Avoid accesses to host ROM as far as
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; possible. Take over lots of IVT entries and continue to
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; point them at this driver.
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; 4) Tim July 92. Version num 1.12, put pseudo ROM stuff back in.
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; 5) Tim July 92. v 1.13, use SoftPC video BIOS when windowed.
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;
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; 6) 12-Sep-1992 Jonle, Merged with ntio.sys
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; cleanup usage of assumes espcially with ES
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; optimized loading of IVT
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; other general cleanup
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;
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; This obj module is intially loaded in a temporary memory location
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; along with ntio.sys. Ntio.sys will copy the resident code (marked by
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; SpcKbdBeg, SpcKbdEnd) into the permanent memory location which resides
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; just below the normal device drivers loaded by config.sys.
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;
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; The nonresident intialization code is run with CS= temp seg
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; and DS= final seg.
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;
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;******************************************************************************
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.286
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include vint.inc
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;================================================================
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; Macros and includes
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;================================================================
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bop MACRO callid
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db 0c4h,0c4h,callid
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endm
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BIOS_CPU_QUIT equ 0FEh
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BIOS_KB_INT equ 9
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BIOS_INT15 equ 15h
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BIOS_PRINTER_IO equ 17h
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UNEXP_BOP equ 2
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RTC_WAIT_FLAG equ 0a0h ; offset of rtc_wait_flag in bios data seg
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VERSIONID equ 0BEEFh
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FULLSCREEN equ 1
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MAX_VIDEO_FUNC equ 1Ch
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GET_FONT_FUNC equ 11h
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VID_MODECHANGE equ 0
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MOUSE_LIGHT_PEN equ 4
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MIN_MOUSE_FUNC equ 0F0H
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MAX_MOUSE_FUNC equ 0F7H
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XTRA_MOUSE_FUNC equ 0FAH
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MS_VIDEO_STRING equ 13FFH
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MOUSE_VID_BOP equ 0BEh
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EGA_VIDEO_BOP equ 42h
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PRT_NOTBUSY equ 80h
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PRT_NUM_PORTS equ 3
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PRT_STATE_READY equ 0
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PRT_IRQ equ 10h
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PRT_LPT_BUSY equ 1
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TIMER_LOW equ 6ch
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TIMER_HIGH equ 6eh
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TIMER_OVFL equ 70h
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MOTOR_STATUS equ 3fh
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MOTOR_COUNT equ 40h
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; Keyboard buf ptrs
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BUFFER_HEAD equ 1ah
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BUFFER_TAIL equ 1ch
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BUFFER_START equ 80h
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BUFFER_END equ 82h
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; kb_flag and LED bits
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KB_FLAG equ 17h
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CAPS_STATE equ 40h
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NUM_STATE equ 20h
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SCROLL_STATE equ 10h
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KB_FLAG_1 equ 18h
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KB_FLAG_2 equ 97h
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KB_LEDS equ 07h ; Keyboard LED state bits
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KB_PR_LED equ 40h ; Mode indicator update
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KB_FLAG_3 equ 96h
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LC_E1 equ 01h
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LC_E0 equ 02h
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;..............................................keyboard constants
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; bits in kb_flag
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RIGHT_SHIFT = 1
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LEFT_SHIFT = 2
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CTL_SHIFT = 4
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ALT_SHIFT = 8
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; bit in kb_flag_1
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HOLD_STATE = 8
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SCROLL_SHIFT = 10h
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NUM_SHIFT = 20h
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CAPS_SHIFT = 40h
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INS_SHIFT = 80h
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SYS_SHIFT = 04h
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; IBM scan codes
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CTL_KEY = 29
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LEFT_SHIFTKEY = 42
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RIGHT_SHIFTKEY = 54
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ALT_KEY = 56
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CAPS_KEY = 58
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NUM_KEY = 69
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SCROLL_KEY = 70
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INS_KEY = 82
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;
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; Segment definitions for ntio.sys,
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;
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include biosseg.inc
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SpcKbdSeg segment
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assume cs:SpcKbdSeg,ds:nothing,es:nothing
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;
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; SpcKbdBeg - SpcKbdEnd
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;
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; Marks the resident code, anything outside of these markers
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; is discarded after intialization
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; 13-Sep-1992 Jonle
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;
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public SpcKbdBeg
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SpcKbdBeg label byte
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;
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; Reduced data table for Video 7 modes 0 and 2.
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; This table is extracted from our video7 ROM. Only text modes are
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; required, mode 0 and 1 are identical as are modes 2 and 3.
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;
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ega_parm_setup:
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;--40x25--
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DB 40,24,16 ; width,height,character height
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DW 00800H ; Page size in bytes
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DB 008H, 003H, 000H, 002H ; Sequencer Parameters
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DB 067H ;Misc Reg
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; CRTC Parameters
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DB 02dH, 027H, 028H, 090H, 02bH
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DB 0a0H, 0bfH, 01fH, 000H, 04fH
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DB 00dH, 00eH, 000H, 000H, 000H
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DB 000H, 09cH, 0aeH, 08fH, 014H
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DB 01fH, 096H, 0b9H, 0a3H, 0ffH
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; Attribute parameters
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DB 000H, 001H, 002H, 003H, 004H
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DB 005H, 014H, 007H, 038H, 039H
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DB 03aH, 03bH, 03cH, 03dH, 03eH
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DB 03fH, 00cH, 000H, 00fH, 008H
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; Graph parameters
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DB 000H, 000H, 000H, 000H, 000H
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DB 010H, 00eH, 000H, 0ffH
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;--80x25--
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DB 80,24,16 ; width,height,character height
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DW 01000H ; Page size in bytes
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DB 000H, 003H, 000H, 002H ; Sequencer Parameters
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DB 067H ;Misc Reg
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; CRTC Parameters
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DB 05fH, 04fH, 050H, 082H, 055H
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DB 081H, 0bfH, 01fH, 000H, 04fH
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DB 00dH, 00eH, 000H, 000H, 000H
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DB 000H, 09cH, 08eH, 08fH, 028H
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DB 01fH, 096H, 0b9H, 0a3H, 0ffH
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; Attribute parameters
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DB 000H, 001H, 002H, 003H, 004H
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DB 005H, 014H, 007H, 038H, 039H
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DB 03aH, 03bH, 03cH, 03dH, 03eH
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DB 03fH, 00cH, 000H, 00fH, 008H
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; Graph parameters
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DB 000H, 000H, 000H, 000H, 000H
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DB 010H, 00eH, 000H, 0ffH
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;--80x25 mono--
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DB 80,24,16 ; width,height,character height
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DW 01000H ; Page size in bytes
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DB 000H, 003H, 000H, 003H ; Sequencer Parameters
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DB 0a6H ;Misc Reg
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; CRTC Parameters
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DB 05fH, 04fH, 050H, 082H, 055H
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DB 081H, 0bfH, 01fH, 000H, 04dH
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DB 00bH, 00cH, 000H, 000H, 000H
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DB 000H, 083H, 0a5H, 05dH, 028H
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DB 00dH, 063H, 0baH, 0a3H, 0ffH
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; Attribute parameters
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DB 000H, 008H, 008H, 008H, 008H
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DB 008H, 008H, 008H, 010H, 018H
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DB 018H, 018H, 018H, 018H, 018H
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DB 018H, 00eH, 000H, 00fH, 008H
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; Graph parameters
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DB 000H, 000H, 000H, 000H, 000H
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DB 010H, 00aH, 000H, 0ffH
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; Mode b (font load)
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DB 5eh,32H,8 ; width,height,character height
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DW 09700H ; Page size in bytes
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DB 001H, 00fH, 000H, 006H ; Sequencer Parameters
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DB 0e7H ;Misc Reg
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; CRTC Parameters
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DB 06dH, 05dH, 05eH, 090H, 061H
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DB 08fH, 0bfH, 01fH, 000H, 040H
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DB 000H, 000H, 000H, 000H, 000H
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DB 000H, 0a2H, 08eH, 099H, 02fH
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DB 000H, 0a1H, 0b9H, 0e3H, 0ffH
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; Attribute parameters
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DB 000H, 001H, 002H, 003H, 004H
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DB 005H, 014H, 007H, 038H, 039H
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DB 03aH, 03bH, 03cH, 03dH, 03eH
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DB 03fH, 001H, 000H, 00fH, 000H
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; Graph parameters
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DB 000H, 000H, 000H, 000H, 000H
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DB 000H, 005H, 00fH, 0ffH
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;--350 scanline 40x25
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DB 40,24,14 ; width,height,character height
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DW 00800H ; Page size in bytes
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DB 009H, 003H, 000H, 002H ; Sequencer Parameters
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DB 0a3H ;Misc Reg
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; CRTC Parameters
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DB 02dH, 027H, 028H, 090H, 02bH
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DB 0a0H, 0bfH, 01fH, 000H, 04dH
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DB 00bH, 00cH, 000H, 000H, 000H
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DB 000H, 083H, 0a5H, 05dH, 014H
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DB 01fH, 063H, 0baH, 0a3H, 0ffH
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; Attribute parameters
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DB 000H, 001H, 002H, 003H, 004H
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DB 005H, 014H, 007H, 038H, 039H
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DB 03aH, 03bH, 03cH, 03dH, 03eH
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DB 03fH, 008H, 000H, 00fH, 000H
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; Graph parameters
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DB 000H, 000H, 000H, 000H, 000H
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DB 010H, 00eH, 000H, 0ffH
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;--350 scanline 80x25
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DB 80,24,14 ; width,height,character height
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DW 01000H ; Page size in bytes
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DB 001H, 003H, 000H, 002H ; Sequencer Parameters
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DB 0a3H ;Misc Reg
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; CRTC Parameters
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DB 05fH, 04fH, 050H, 082H, 055H
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DB 081H, 0bfH, 01fH, 000H, 04dH
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DB 00bH, 00cH, 000H, 000H, 000H
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DB 000H, 083H, 0a5H, 05dH, 028H
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DB 01fH, 063H, 0baH, 0a3H, 0ffH
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; Attribute parameters
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DB 000H, 001H, 002H, 003H, 004H
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DB 005H, 014H, 007H, 038H, 039H
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DB 03aH, 03bH, 03cH, 03dH, 03eH
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DB 03fH, 008H, 000H, 00fH, 000H
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; Graph parameters
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DB 000H, 000H, 000H, 000H, 000H
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DB 010H, 00eH, 000H, 0ffH
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;
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; End of baby mode table.
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;
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; Table of VGA bios 'capability' info for func 1b to point at.
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vga_1b_table db 07fh, 060h, 00fh, 000h, 000h, 000h, 000h, 007h
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db 002h, 008h, 0ffh, 00eh, 000h, 000h, 03fh, 000h
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; Configuration table for INT 15 Func C0 to point at.
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conf_table dw 008h
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;; db 000h, 0fch, 002h, 000h, 070h, 000h, 000h, 000h, 000h
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db 000h, 0fch, 002h, 074h, 070h, 000h, 000h, 000h, 000h
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PRT_BUF_SIZE equ 255
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;================================================================
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; Printer status table
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;================================================================
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prt_status db PRT_NUM_PORTS dup (?)
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prt_state db PRT_NUM_PORTS dup (?)
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prt_control db PRT_NUM_PORTS dup (?)
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prt_lpt_stat db PRT_NUM_PORTS dup (?)
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cur_buf_size dw PRT_BUF_SIZE
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prt_data_buf db PRT_BUF_SIZE dup (?) ; buffer in the 16bit side for perf.
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cur_lpt db 0ffh ; buffer is not being used
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cur_count dw ?
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cur_busy db 0 ; initially not busy
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;::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
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; Keyboard tables
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;::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
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shift_keys: ;K6
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DB INS_KEY,CAPS_KEY,NUM_KEY,SCROLL_KEY
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DB ALT_KEY,CTL_KEY,LEFT_SHIFTKEY,RIGHT_SHIFTKEY
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shift_masks: ;K7
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DB INS_SHIFT,CAPS_SHIFT,NUM_SHIFT,SCROLL_SHIFT
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DB ALT_SHIFT,CTL_SHIFT,LEFT_SHIFT,RIGHT_SHIFT
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ctl_n_table: ;K8
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DB 27, -1, 0, -1, -1, -1, 30, -1
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DB -1, -1, -1, 31, -1, 127, 148, 17
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DB 23, 5, 18, 20, 25, 21, 9, 15
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DB 16, 27, 29, 10, -1, 1, 19, 4
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DB 6, 7, 8, 10, 11, 12, -1, -1
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DB -1, -1, 28, 26, 24, 3, 22, 2
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DB 14, 13, -1, -1, -1, -1, 150, -1
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DB ' ', -1
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ctl_f_table: ;K9
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DB 94, 95, 96, 97, 98, 99, 100, 101
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DB 102, 103, -1, -1, 119, 141, 132, 142
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DB 115, 143, 116, 144, 117, 145, 118, 146
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DB 147, -1, -1, -1, 137, 138
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lowercase:
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DB 27, '1', '2', '3', '4', '5', '6', '7', '8', '9' ;K10
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DB '0', '-', '=', 8, 9, 'q', 'w', 'e', 'r', 't'
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DB 'y', 'u', 'i', 'o', 'p', '[', ']', 13, -1, 'a'
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DB 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', 39
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DB 96, -1, 92, 'z', 'x', 'c', 'v', 'b', 'n', 'm'
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DB ',', '.', '/', -1, '*', -1, ' ', -1
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lc_tbl_scan:
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DB 59, 60, 61, 62, 63, 64, 65, 66, 67, 68
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DB -1, -1
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base_case:
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DB 71, 72, 73, -1, 75, -1, 77, -1, 79, 80
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DB 81, 82, 83, -1, -1, 92, 133, 134 ;K15
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uppercase: ;K11
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DB 27, '!', '@', '#', '$', '%', '^', '&', '*', '('
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DB ')', '_', '+', 8, 0, 'Q', 'W', 'E', 'R', 'T'
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DB 'Y', 'U', 'I', 'O', 'P', '{', '}', 13, -1, 'A'
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DB 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"'
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DB 126, -1, '|', 'Z', 'X', 'C', 'V', 'B', 'N', 'M'
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DB '<', '>', '?', -1, 0, -1, ' ', -1;
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ucase_scan:
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DB 84, 85, 86, 87, 88, 89, 90, 91, 92, 93
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DB -1, -1
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numb_state:
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DB '7', '8', '9', '-', '4', '5', '6', '+', '1', '2' ;K14
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DB '3', '0', '.' , -1, -1, 124, 135, 136
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alt_table:
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DB 82, 79, 80, 81, 75, 76, 77, 71, 72, 73 ;K30
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DB 16, 17, 18, 19, 20, 21, 22, 23, 24, 25
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DB 30, 31, 32, 33, 34, 35, 36, 37, 38, 44
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DB 45, 46, 47, 48, 49, 50
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;================================================================
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; Keyboard break caller
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;================================================================
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keyboard_break_caller:
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int 1bh ;keyboard break
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bop %BIOS_CPU_QUIT
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;================================================================
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; Print screen caller
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;================================================================
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print_screen_caller:
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int 5h ;print screen
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bop %BIOS_CPU_QUIT
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;================================================================
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; Int 15 caller
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;================================================================
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; Tim modified int 15 caller. Copied from BIOS2. It gives CPU
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; a chance to take other interrupts. Suspect the extra jumps are
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; now harmless with IRET hooking.
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;int15h_caller:
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;int 15h
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;bop %BIOS_CPU_QUIT
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int15h_caller:
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int 15h ; Cassette I/O.
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jmp k1
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k1: jmp k2
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k2: jmp k3
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k3: BOP %BIOS_CPU_QUIT
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;================================================================
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; Unexpected interrupt handler
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;================================================================
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unexp_int:
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bop %UNEXP_BOP
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jmp iret_com
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;================================================================
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;Int 13 caller
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;================================================================
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int13h_caller:
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int 13h
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bop %BIOS_CPU_QUIT
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;================================================================
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; New interrupt 9h handler
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;================================================================
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int09h_vector:
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push ax
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xor ax, ax
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bop %BIOS_KB_INT
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pop ax
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jmp iret_com
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; CarbonCopy traces int 9 in order to gain control
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; over where the kbd data is coming from (the physical kbd
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; or the serial link) The kbd_inb instruction must be visible
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; in the 16 bit code via int 1 tracing, for CarbonCopy to work.
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; Softpc assumes the exact location of the first nop
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; relative to the bop just above.
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nop
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nop
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in al, 60h ; keyba_io_buffers
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nop
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nop
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BOP %BIOS_CPU_QUIT
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;=================================================================
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; IRET hooks bop table
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;=================================================================
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IRET_HOOK = 5dh ;IRET hook BOP
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iret_bop_table:
|
|
bop %IRET_HOOK
|
|
db 0
|
|
iret_end_first_entry:
|
|
bop %IRET_HOOK
|
|
db 1
|
|
bop %IRET_HOOK
|
|
db 2
|
|
bop %IRET_HOOK
|
|
db 3
|
|
bop %IRET_HOOK
|
|
db 4
|
|
bop %IRET_HOOK
|
|
db 5
|
|
bop %IRET_HOOK
|
|
db 6
|
|
bop %IRET_HOOK
|
|
db 7
|
|
bop %IRET_HOOK
|
|
db 8
|
|
bop %IRET_HOOK
|
|
db 9
|
|
bop %IRET_HOOK
|
|
db 10
|
|
bop %IRET_HOOK
|
|
db 11
|
|
bop %IRET_HOOK
|
|
db 12
|
|
bop %IRET_HOOK
|
|
db 13
|
|
bop %IRET_HOOK
|
|
db 14
|
|
bop %IRET_HOOK
|
|
db 15
|
|
|
|
;================================================================
|
|
; New interrupt 13h handler
|
|
;================================================================
|
|
|
|
int13h_vector:
|
|
cmp dl,80h ; 0 - 7f are floppy commands
|
|
jb int40h_vector
|
|
|
|
cmp ah,2 ; we fail the direct access commands
|
|
jb diskcmd ; read/write/seek/verify/format
|
|
cmp ah,5 ; but let others go through (disk tables etc)
|
|
jbe faildisk
|
|
cmp ah,0ah
|
|
jb diskcmd
|
|
cmp ah,0ch
|
|
ja diskcmd
|
|
faildisk:
|
|
push ax
|
|
mov ax,1 ; direct access error panel
|
|
bop 59h
|
|
pop ax ; preserve AL for safety sake
|
|
mov ah, 80h ; error - timeout
|
|
stc
|
|
retf 2
|
|
|
|
diskcmd:
|
|
bop 13h
|
|
retf 2
|
|
|
|
;================================================================
|
|
; New interrupt 40h handler
|
|
;================================================================
|
|
|
|
int40h_vector:
|
|
; cmp ah,2 ; we fail the direct access commands
|
|
; jb flopcmd ; read/write/seek/verify/format
|
|
; cmp ah,5 ; but let others go through (disk tables etc)
|
|
; jbe failflop
|
|
; cmp ah,0ah
|
|
; jb flopcmd
|
|
; cmp ah,0ch
|
|
; ja flopcmd
|
|
failflop:
|
|
; push ax
|
|
; mov ax,0 ; direct access error panel
|
|
; bop 59h
|
|
; pop ax
|
|
; mov ah, 80h ; error - timeout
|
|
; stc
|
|
; retf 2
|
|
|
|
flopcmd:
|
|
bop 40h
|
|
retf 2
|
|
|
|
;; waiting for diskette interrupt
|
|
wait_int:
|
|
push ds
|
|
push ax
|
|
push cx
|
|
mov ax, 40h
|
|
mov ds, ax
|
|
mov cx, 10h
|
|
wait_int_loop:
|
|
mov al, [3Eh]
|
|
test al, 80h
|
|
loopz wait_int_loop
|
|
pop cx
|
|
pop ax
|
|
pop ds
|
|
bop %BIOS_CPU_QUIT
|
|
|
|
;; floppy parameters table
|
|
floppy_table label byte
|
|
|
|
DB 01 ;; 360KB in 360KB
|
|
DW OFFSET md_tbl1
|
|
DB 82H ;; 360KB in 1,2MB
|
|
DW OFFSET md_tbl2
|
|
DB 02 ;; 1.2MB in 1.2MB
|
|
DW OFFSET md_tbl3
|
|
DB 03 ;; 720KB in 720KB
|
|
DW OFFSET md_tbl4
|
|
DB 84H ;; 720KB in 1.44MB
|
|
DW OFFSET md_tbl5
|
|
DB 04 ;; 1.44MB in 1.44MB
|
|
DW OFFSET md_tbl6
|
|
DB 85h ;; 720KB in 2.88MB
|
|
DW OFFSET md_tbl7
|
|
DB 85h ;; 1.44MB in 2.88MB
|
|
DW OFFSET md_tbl8
|
|
DB 5 ;; 2.88MB in 2.88MB
|
|
DW OFFSET md_tbl9
|
|
|
|
|
|
md_tbl1:
|
|
; MEDIA = 40 track low data rate; DRIVE = 40 track low data rate
|
|
DB 0DFh ; 1st specify byte
|
|
DB 2 ; 2nd specify byte
|
|
DB 25H ; motor off wait time
|
|
DB 2 ; ie 2 bytes/sector
|
|
DB 9 ; sectors/track
|
|
DB 02Ah ; gap length
|
|
DB 0FFh ; data length
|
|
DB 050h ; gap length for format
|
|
DB 0F6h ; fill byte for format
|
|
DB 15 ; head settle time/ms
|
|
DB 8 ; ie 1s motor start time
|
|
DB 39 ; maximum track number
|
|
DB 80H ; transfer rate
|
|
|
|
md_tbl2:
|
|
; MEDIA = 40 track low data rate; DRIVE = 80 track high data rate
|
|
DB 0DFh ; 1st specify byte
|
|
DB 2 ; 2nd specify byte
|
|
DB 25H ; motor off wait time
|
|
DB 2 ; ie 2 bytes/sector
|
|
DB 9 ; sectors/track
|
|
DB 02Ah ; gap length
|
|
DB 0FFh ; data length
|
|
DB 050h ; gap length for format
|
|
DB 0F6h ; fill byte for format
|
|
DB 15 ; head settle time/ms
|
|
DB 8 ; ie 1s motor start time
|
|
DB 39 ; maximum track number
|
|
DB 40H ; transfer rate
|
|
|
|
md_tbl3:
|
|
; MEDIA = 80 track high data rate; DRIVE = 80 track high data rate
|
|
DB 0DFh ; 1st specify byte
|
|
DB 2 ; 2nd specify byte
|
|
DB 25H ; motor off wait time
|
|
DB 2 ; ie 2 bytes/sector
|
|
DB 15 ; sectors/track
|
|
DB 01Bh ; gap length
|
|
DB 0FFh ; data length
|
|
DB 054h ; gap length for format
|
|
DB 0F6h ; fill byte for format
|
|
DB 15 ; head settle time/ms
|
|
DB 8 ; ie 1s motor start time
|
|
DB 79 ; maximum track number
|
|
DB 0 ; transfer rate
|
|
|
|
md_tbl4:
|
|
; MEDIA = 80 track low data rate; DRIVE = 80 track low data rate
|
|
DB 0DFh ; 1st specify byte
|
|
DB 2 ; 2nd specify byte
|
|
DB 25H ; motor off wait time
|
|
DB 2 ; ie 2 bytes/sector
|
|
DB 9 ; sectors/track
|
|
DB 02Ah ; gap length
|
|
DB 0FFh ; data length
|
|
DB 050h ; gap length for format
|
|
DB 0F6h ; fill byte for format
|
|
DB 15 ; head settle time/ms
|
|
DB 8 ; ie 1s motor start ime
|
|
DB 79 ; maximum track number
|
|
DB 80H ; transfer rate
|
|
|
|
md_tbl5:
|
|
; MEDIA = 80 track low data rate; DRIVE = 80 track high data rate
|
|
DB 0DFh ; 1st specify byte
|
|
DB 2 ; 2nd specify byte
|
|
DB 25H ; motor off wait time
|
|
DB 2 ; ie 2 bytes/sector
|
|
DB 9 ; sectors/track
|
|
DB 02Ah ; gap length
|
|
DB 0FFh ; data length
|
|
DB 050h ; gap length for format
|
|
DB 0F6h ; fill byte for format
|
|
DB 15 ; head settle time/ms
|
|
DB 8 ; ie 1s motor start time
|
|
DB 79 ; maximum track number
|
|
DB 80H ; transfer rate
|
|
|
|
md_tbl6:
|
|
; MEDIA = 80 track high data rate; DRIVE = 80 track high data rate
|
|
DB 0AFh ; 1st specify byte
|
|
DB 2 ; 2nd specify byte
|
|
DB 25H ; motor off wait time
|
|
DB 2 ; ie 2 bytes/sector
|
|
DB 18 ; sectors/track
|
|
DB 01Bh ; gap length
|
|
DB 0FFh ; data length
|
|
DB 06Ch ; gap length for format
|
|
DB 0F6h ; fill byte for format
|
|
DB 15 ; head settle time/ms
|
|
DB 8 ; ie 1s motor start time
|
|
DB 79 ; maximum track number
|
|
DB 0 ; transfer rate
|
|
|
|
md_tbl7:
|
|
;MEDIA = 80 tracks, 9 sectors/track; DRIVE = 80 tracks, 36 sectotrs per track
|
|
|
|
DB 0E1h ; 1st specify byte
|
|
DB 2 ; 2nd specify byte
|
|
DB 25H ; motor off wait time
|
|
DB 2 ; ie 2 bytes/sector
|
|
DB 9 ; sectors/track
|
|
DB 02Ah ; gap length
|
|
DB 0FFh ; data length
|
|
DB 050h ; gap length for format
|
|
DB 0F6h ; fill byte for format
|
|
DB 15 ; head settle time/ms
|
|
DB 8 ; ie 1s motor start ime
|
|
DB 79 ; maximum track number
|
|
DB 80H ; transfer rate
|
|
md_tbl8:
|
|
;MEDIA = 80 tracks, 18 sectors/track; DRIVE = 80 tracks, 36 sectotrs per track
|
|
|
|
DB 0D1h ; 1st specify byte
|
|
DB 2 ; 2nd specify byte
|
|
DB 25H ; motor off wait time
|
|
DB 2 ; ie 2 bytes/sector
|
|
DB 18 ; sectors/track
|
|
DB 01Bh ; gap length
|
|
DB 0FFh ; data length
|
|
DB 065h ; gap length for format
|
|
DB 0F6h ; fill byte for format
|
|
DB 15 ; head settle time/ms
|
|
DB 8 ; ie 1s motor start time
|
|
DB 79 ; maximum track number
|
|
DB 0 ; transfer rate
|
|
|
|
md_tbl9:
|
|
;MEDIA = 80 tracks, 36 sectors/track; DRIVE = 80 tracks, 36 sectotrs per track
|
|
|
|
DB 0A1h ; 1st specify byte
|
|
DB 2 ; 2nd specify byte
|
|
DB 25H ; motor off wait time
|
|
DB 2 ; ie 2 bytes/sector
|
|
DB 36 ; sectors/track
|
|
DB 038h ; gap length
|
|
DB 0FFh ; data length
|
|
DB 053h ; gap length for format
|
|
DB 0F6h ; fill byte for format
|
|
DB 15 ; head settle time/ms
|
|
DB 8 ; ie 1s motor start time
|
|
DB 79 ; maximum track number
|
|
DB 0C0h ; transfer rate
|
|
|
|
|
|
|
|
floppy_table_len equ $ - floppy_table
|
|
|
|
bios_floppy_table label byte
|
|
DB 0DFh ; 1st specify byte
|
|
DB 2 ; 2nd specify byte
|
|
DB 25H ; motor off wait time
|
|
DB 2 ; ie 2 bytes/sector
|
|
DB 18 ; sectors/track
|
|
DB 01Bh ; gap length
|
|
DB 0FFh ; data length
|
|
DB 054h ; gap length for format
|
|
DB 0F6h ; fill byte for format
|
|
DB 15 ; head settle time/ms
|
|
DB 8 ; ie 1s motor start time
|
|
bios_floppy_table_len equ $ - bios_floppy_table
|
|
|
|
;===============================================================
|
|
; New interrupt 15h handler
|
|
;================================================================
|
|
; Tim, modified this to be like a "normal" SoftPC ROM.
|
|
; Copied from BIOS2, but rtc_wait_flag is now referenced via ES not
|
|
; DS.
|
|
;
|
|
; 17-Sep-1992 Jonle , ES ref to rtc_wait was change from assume ES
|
|
; to seg overides to prevent accidents in assuming.
|
|
;
|
|
|
|
;int15h_vector:
|
|
;bop %BIOS_INT15
|
|
;iret
|
|
;;;;;;;;;STF hide this int15h_vector:
|
|
int15h_vector:
|
|
call DOSTI
|
|
cmp ah, 88h
|
|
je lbl1
|
|
cmp ah, 91h
|
|
je lbl1
|
|
cmp ah, 86h
|
|
je lbl2
|
|
BOP 15h
|
|
RETF 2
|
|
lbl1: BOP 15h
|
|
jmp iret_com
|
|
lbl2: BOP 15h
|
|
jc lbl5
|
|
push cx
|
|
push dx
|
|
push es ; Tim, save ES not DS.
|
|
mov ax, 40 ; point es to biosdata
|
|
mov es, ax
|
|
xchg dx, cx
|
|
lbl3:
|
|
test byte ptr es:[RTC_WAIT_FLAG], 080h ; check for end of wait
|
|
loopz lbl3 ; dec timeout delay
|
|
jnz lbl4 ; exit if wait ended
|
|
sub dx, 1 ; dec error timeout counter
|
|
jnc lbl3 ; loop till counters timeout
|
|
lbl4:
|
|
mov byte ptr es:[RTC_WAIT_FLAG], 0 ; set function inactive
|
|
pop es ; Kipper, restore ES not DS.
|
|
pop dx
|
|
pop cx
|
|
clc
|
|
lbl5:
|
|
RETF 2
|
|
|
|
;=================================================================
|
|
; Regular SoftPC int 17 handler (especially important for DEC PCs)
|
|
;=================================================================
|
|
|
|
int17h_vector:
|
|
;
|
|
; Do a get status purely in 16-bit code but only if the printer is ready and
|
|
;we don't have interrupts turned on. Otherwise we must do a BOP and let 32-bit
|
|
;code handle it.
|
|
;
|
|
push si
|
|
push dx
|
|
push ax
|
|
mov ax, dx ; dx = adapter no., ensure it is no
|
|
xor dx, dx ; greater than PRT_NUM_PORTS.
|
|
mov si, PRT_NUM_PORTS
|
|
div si
|
|
mov si, dx
|
|
pop ax
|
|
cmp ah, 2
|
|
je do_prt_status
|
|
or ah,ah
|
|
je do_write
|
|
jmp do_print_bop
|
|
|
|
do_prt_status:
|
|
cmp byte ptr cs:[si + prt_state], PRT_STATE_READY
|
|
jne do_print_bop
|
|
test byte ptr cs:[si + prt_control], PRT_IRQ
|
|
je get_status
|
|
jmp short do_print_bop
|
|
|
|
do_write:
|
|
cmp byte ptr cs:[cur_lpt],0ffh
|
|
jne check_lpti
|
|
mov byte ptr cs:[cur_lpt],dl
|
|
mov word ptr cs:[cur_count],0
|
|
mov byte ptr cs:[cur_busy],0ffh
|
|
jmp short do_print_bop
|
|
check_lpti:
|
|
cmp byte ptr cs:[cur_lpt],dl
|
|
je buf_ok
|
|
push si
|
|
xor si,si
|
|
bop %BIOS_PRINTER_IO
|
|
pop si
|
|
mov word ptr cs:[cur_count],0
|
|
mov byte ptr cs:[cur_lpt],dl
|
|
jmp short do_print_bop
|
|
buf_ok:
|
|
mov dx,word ptr cs:[cur_count]
|
|
mov si,dx
|
|
mov byte ptr cs:[si + prt_data_buf],al
|
|
inc word ptr cs:[cur_count]
|
|
cmp word ptr cs:[cur_count],PRT_BUF_SIZE
|
|
jne no_flushing
|
|
xor si,si ; sub-function 0 for this bop
|
|
bop %BIOS_PRINTER_IO
|
|
test ah,08h
|
|
jz flush_ok
|
|
dec word ptr cs:[cur_count]
|
|
jmp short int17h_end
|
|
flush_ok:
|
|
mov word ptr cs:[cur_count],0
|
|
no_flushing:
|
|
mov ah,90h
|
|
jmp short int17h_end
|
|
|
|
do_print_bop:
|
|
mov si,0ffffh ; sub-function 1
|
|
bop %BIOS_PRINTER_IO
|
|
jmp int17h_end
|
|
|
|
get_status:
|
|
test byte ptr cs:[si + prt_lpt_stat], PRT_LPT_BUSY
|
|
jne noset
|
|
or byte ptr cs:[si + prt_status], PRT_NOTBUSY
|
|
noset:
|
|
mov ah, cs:[si + prt_status]
|
|
and ah, 0f8h
|
|
xor ah, 48h
|
|
int17h_end:
|
|
pop dx
|
|
pop si
|
|
iret_com:
|
|
FIRET
|
|
|
|
|
|
;=================================================================
|
|
; Pseudo-ROM vectuz, copied from BIOS2.ASM
|
|
;=================================================================
|
|
|
|
dummy_vector: ; Copied from BIOS2.ASM
|
|
jmp iret_com
|
|
illegal_bop_vector:
|
|
bop 72h
|
|
jmp iret_com
|
|
intD11_vector:
|
|
bop 72h
|
|
jmp iret_com
|
|
|
|
int05h_vector: ; Print Screen func. copied from BIOS2.ASM
|
|
call DOSTI
|
|
PUSH AX
|
|
PUSH BX
|
|
PUSH CX
|
|
PUSH DX
|
|
PUSH DS
|
|
;::::::::::::::::::::::::::::::::: Setup DS to point to BIOS data area
|
|
MOV AX,40H
|
|
MOV DS,AX
|
|
;::::::::::::::::::::::::::::::: Print screen already in progress ????
|
|
CMP BYTE PTR DS:[100H],1
|
|
JE end_print
|
|
;::::::::::::::::::::::::::::::::::::::::::::::: Set print screen busy
|
|
MOV BYTE PTR DS:[100h],1
|
|
;:::::::::::::::::::::::::::::::::::::::::::::::::::: Get video status
|
|
MOV AH,15
|
|
INT 10H
|
|
MOV CH,AH ;No of columns
|
|
;:::::::::::::::::::::::::::::::::: Setup no. of columns/rows to print
|
|
BOP 80H ;(BIOS_PS_PRIVATE_1)
|
|
MOV CL,AL ;No of rows
|
|
;::::::::::::::::::::::::::::::::::: Print line feed / carriage return
|
|
CALL print_crlf
|
|
;:::::::::::::::::::::::::::::::::::::::::: Get current cursor postion
|
|
PUSH CX
|
|
MOV AH,3
|
|
INT 10H
|
|
POP CX
|
|
;::::::::::::::::::::::::::::::::::::::::::::::::: Save cursor postion
|
|
PUSH DX ;save current cursor postion
|
|
XOR DH,DH ;current row being processed
|
|
start_print_col:
|
|
XOR DL,DL ;current column being processed
|
|
;::::::::::::::::::::::::::::::::::::::::::::::: Start printing screen
|
|
start_print_row:
|
|
;:::::::::::::::::::::::::::::::::::::::::::::::::: Set cursor postion
|
|
PUSH DX ;save current row,column
|
|
MOV AH,2
|
|
INT 10H
|
|
;::::::::::::::::::::::::::::::::::: Read character at current postion
|
|
MOV AH,8
|
|
INT 10H
|
|
;::::::::::::::::::::::::::::::::::::::::::::::::::::: Print character
|
|
OR al,al
|
|
JNZ print_char
|
|
MOV AL,20H
|
|
print_char:
|
|
XOR DX,DX
|
|
XOR AH,AH
|
|
INT 17H
|
|
;:::::::::::::::::::::::::::::::::::::::::::: Check for printer errors
|
|
POP DX ;Restore current row,column
|
|
AND AH,25H
|
|
JZ cont2
|
|
MOV BYTE PTR DS:[100H],0FFH
|
|
JMP short exit_print
|
|
;::::::::::::::::::::::::::::::::::::::::::: Move to mext print column
|
|
cont2:
|
|
INC DL ;Inc current column
|
|
CMP DL,CH ;Current col compared to no. of cols
|
|
JB start_print_row
|
|
;:::::::::::::::::::::::::::::::::::::::::: End of column, print CR/LF
|
|
CALL print_crlf
|
|
;:::::::::::::::::::::::::::::::::::::::::::::::::: More rows to print
|
|
INC DH ;Inc current row
|
|
CMP DH,CL ;Current row compared to no. of rows
|
|
JBE start_print_col
|
|
MOV BYTE PTR DS:[0100H],0
|
|
;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Exit print
|
|
exit_print:
|
|
;:::::::::::::::::::::::::::::::::::::; Restore orginal cursor postion
|
|
POP DX
|
|
MOV AH,2
|
|
INT 10H
|
|
;:::::::::::::::::::::::::::::::::::::::::::::::::::: Tidy up and exit
|
|
end_print:
|
|
POP DS
|
|
POP DX
|
|
POP CX
|
|
POP BX
|
|
POP AX
|
|
jmp iret_com
|
|
|
|
;::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Print CR/LF
|
|
print_crlf:
|
|
PUSH DX
|
|
XOR DX,DX
|
|
MOV AX,0DH
|
|
INT 17H
|
|
XOR DX,DX
|
|
MOV AX,0AH
|
|
INT 17H
|
|
POP DX
|
|
RET
|
|
; End of int05_vector (print screen).
|
|
|
|
int06h_vector:
|
|
bop 06h
|
|
jmp iret_com
|
|
|
|
; IVT 7 is set to unexpected interrupt.
|
|
|
|
|
|
int08h_vector:
|
|
; The usual int8 handler modified for optimum performance.
|
|
; - stays in 16 bit code (no BOP)
|
|
; - keeps interrupts off when not needed
|
|
; - calls int 1c directly
|
|
;
|
|
call DOCLI ; make sure interrupts stay off until iret
|
|
|
|
push es
|
|
push ds ; save some registers
|
|
push ax
|
|
push dx
|
|
|
|
mov ax, 40h ; set ds to bios data area
|
|
mov ds, ax
|
|
xor ax, ax
|
|
mov es, ax ; set es to IVT seg for i1c callout
|
|
|
|
inc word ptr ds:[TIMER_LOW] ; inc time counters
|
|
jnz i8v1
|
|
inc word ptr ds:[TIMER_HIGH]
|
|
i8v1:
|
|
cmp word ptr ds:[TIMER_HIGH], 018h ; check for 24 hours, wrap point
|
|
jnz i8v2
|
|
cmp word ptr ds:[TIMER_LOW], 0b0h
|
|
jnz i8v2
|
|
|
|
|
|
mov word ptr ds:[TIMER_HIGH], ax ; 24 hour wrap, set OVFL bit
|
|
mov word ptr ds:[TIMER_LOW], ax
|
|
mov byte ptr ds:[TIMER_OVFL], 1
|
|
or al, 8 ; set Overflow bit for fake flags
|
|
|
|
;--- ; skip floppy motor stuff
|
|
|
|
|
|
i8v2: ; handle the floppy motor stuff
|
|
push ax
|
|
dec byte ptr ds:[MOTOR_COUNT]
|
|
jnz i8v3
|
|
and byte ptr ds:[MOTOR_STATUS], 0f0h
|
|
mov al, 0ch
|
|
mov dx, 03f2h ; costly outb happens 1/256 timer tics...
|
|
out dx, al
|
|
|
|
i8v3:
|
|
pop ax
|
|
; call int1c user routine directly
|
|
lahf ; get lobyte of flags for fake flags
|
|
xchg ah,al
|
|
push ax ; put fake flags on the stack
|
|
call dword ptr es:[1ch*4] ; do it!
|
|
call DOCLI ; make sure interrupts stay off until iret
|
|
|
|
mov al, 20h ; send eoi
|
|
out 20h, al
|
|
|
|
pop dx ;restore the stack
|
|
pop ax
|
|
pop ds
|
|
pop es
|
|
|
|
jmp iret_com
|
|
|
|
|
|
|
|
int0e_vector:
|
|
bop 0eh
|
|
jmp iret_com
|
|
|
|
DOCLI:
|
|
FCLI
|
|
ret
|
|
|
|
DOSTI:
|
|
FSTI
|
|
ret
|
|
|
|
;
|
|
; Tim August 92. Video BIOS grabber.
|
|
; Call SPC BIOS when in windowed mode and the host BIOS when in full-screen.
|
|
; Controled by value of 'use_host_int10'.
|
|
; Try to limit bops by validating calling values. Mouse has to get first shot
|
|
; and then video bios.
|
|
;
|
|
|
|
use_host_int10 db 01h ; native/softpc bios flag
|
|
changing_mode db 01h ; delay handshake if in bios mode change
|
|
|
|
PUBLIC int10h_vector
|
|
|
|
int10h_vector:
|
|
cmp use_host_int10, FULLSCREEN
|
|
je nativebios
|
|
|
|
cmp ah,VID_MODECHANGE ; mode change??
|
|
je modechange
|
|
cmp ah,MAX_VIDEO_FUNC ; range check
|
|
ja mousecheck ; not a vid func but mouse has higher
|
|
cmp ah,MOUSE_LIGHT_PEN ; light pen special case
|
|
je mousebios
|
|
spcbios:
|
|
bop EGA_VIDEO_BOP ; regular windowed Int 10
|
|
jmp viddone
|
|
|
|
mousecheck:
|
|
cmp ah,MIN_MOUSE_FUNC ; range check mouse fn f0-f7 + fa.
|
|
jb badvid
|
|
cmp ah,MAX_MOUSE_FUNC
|
|
jbe mousebios
|
|
cmp ah,XTRA_MOUSE_FUNC
|
|
jne badvid
|
|
|
|
mousebios: ; call softpc mouse video entrypoint
|
|
bop MOUSE_VID_BOP
|
|
jmp viddone
|
|
|
|
modechange: ; windowed modechange. Mouse gets a look
|
|
mov changing_mode,1 ; then softpc video bios. If gfx mode then
|
|
bop MOUSE_VID_BOP ; will go fullscreen
|
|
;;;nop
|
|
;;;nop ; nops aid debugging
|
|
;;;bop EGA_VIDEO_BOP ; will go fullscreen here
|
|
nop
|
|
nop
|
|
push ax ; save video mode which may have top bit set
|
|
and ax,7fh
|
|
cmp al,3
|
|
jbe endmode ; if graphics mode, repeat modechange to setup
|
|
cmp al,7 ; video card, else fall through
|
|
je endmode
|
|
pop ax
|
|
jmp nativebios
|
|
endmode:
|
|
pop ax
|
|
mov changing_mode,0 ; Clear 'mode changing' flag.
|
|
|
|
viddone:
|
|
jmp iret_com
|
|
|
|
badvid: ; unrecognised video func
|
|
stc
|
|
jmp viddone
|
|
|
|
nativebios:
|
|
mov changing_mode,0 ; Clear 'mode changing' flag.
|
|
cmp ax,MS_VIDEO_STRING ; ensure not MS special video string fn
|
|
je ms_wrt_string
|
|
|
|
cmp ah,MIN_MOUSE_FUNC ; could be a mouse call
|
|
jb chk_mse_vid
|
|
cmp ah,MAX_MOUSE_FUNC ; range check mouse fn f0-f7 + fa.
|
|
jbe mousebios
|
|
cmp ah,XTRA_MOUSE_FUNC
|
|
je mousebios
|
|
jmp jmp_native ; probably bad func but...
|
|
|
|
chk_mse_vid:
|
|
cmp ah,MOUSE_LIGHT_PEN ; mouse handles light pen
|
|
je mousebios
|
|
cmp ah,VID_MODECHANGE
|
|
jne chk_font_change
|
|
bop MOUSE_VID_BOP ; mouse wants first sniff at mode changes
|
|
jmp jmp_native ; then fall through
|
|
chk_font_change:
|
|
cmp ah,GET_FONT_FUNC
|
|
jne jmp_native
|
|
bop MOUSE_VID_BOP ; select mouse buffer for new no. of lines
|
|
; then fall through
|
|
|
|
jmp_native:
|
|
db 0EAh ; far jump
|
|
host_int10 dd ? ; to native int 10 vector
|
|
|
|
ms_wrt_string:
|
|
push si
|
|
push di
|
|
push bp
|
|
go_loop1:
|
|
mov dx,46h ; looks a good value for flags
|
|
push dx ; make an iret frame
|
|
push cs
|
|
mov bx, offset go_cont
|
|
push bx
|
|
mov bx,7 ; set foreground color
|
|
mov ah,0eh ; set command to write a character
|
|
mov al,es:[di] ; get char
|
|
inc di
|
|
jmp jmp_native ; make far jmp to int 10 vector
|
|
|
|
go_cont:
|
|
loop go_loop1 ;repeat until all through
|
|
pop bp
|
|
pop di
|
|
pop si
|
|
mov ax,1 ; return success
|
|
jmp viddone
|
|
;
|
|
; int 42 - 'old' video bios entry point. Use same windowed/fullscreen
|
|
; redirection as Int 10 above.
|
|
;
|
|
int42h_vector:
|
|
cmp use_host_int10, FULLSCREEN
|
|
jz maybe_host_42_bios
|
|
|
|
bop 10h ; old video bop
|
|
jmp iret_com
|
|
|
|
; If it's the special BIOS print string function, don't call the
|
|
; host video BIOS cos it won't know what we are talking about.
|
|
; It's only in our video BIOS.
|
|
maybe_host_42_bios:
|
|
cmp AH, 013h
|
|
jnz gogo_host_42_bios
|
|
cmp AL, 0ffh
|
|
jz ms_wrt_string ; reuse path from Int 10
|
|
|
|
gogo_host_42_bios:
|
|
db 0EAh ; far jump
|
|
host_int42 dd ? ; to native int 42 vector
|
|
|
|
int10h_caller:
|
|
int 10h ; Re-entrant video entry point.
|
|
bop 0feh
|
|
|
|
int11h_vector: ; Equipment check.
|
|
bop 11h
|
|
jmp iret_com
|
|
int12h_vector: ; Get memory size, copied from BIOS2.ASM
|
|
bop 12h
|
|
jmp iret_com
|
|
|
|
; IVT 13 is floppy io, grabbed above to fake error status.
|
|
|
|
int14h_vector: ; RS-232 serial comms, copied from BIOS2
|
|
bop 14h
|
|
jmp iret_com
|
|
|
|
; Int 15 cassette io, is done above.
|
|
|
|
|
|
|
|
; Idle indicators- All word sized, and dword aligned
|
|
; Int 16 keyboard vector
|
|
|
|
align 4
|
|
public Icounter,CharsPerTick,MinTicks
|
|
|
|
Icounter dw 0
|
|
dw 0
|
|
CharsPerTick dw 0
|
|
dw 0
|
|
MinTicks dw 50
|
|
dw 0
|
|
|
|
int16h_vector:
|
|
push ds
|
|
push bx
|
|
mov bx, 40h ; bios data adressable
|
|
mov ds, bx
|
|
cmp ah, 10h
|
|
call DOCLI ; make sure interrupts are off
|
|
jb i16vStdFns
|
|
jmp i16vExtFns
|
|
|
|
|
|
; The dispatch code must preserve the jz,dec,dec pattern
|
|
; to return the same ah value as is returned by the
|
|
; standard bios (0 for supported unless otherwise documented
|
|
; and nonzero for unsupported). This is because some apps look
|
|
; at the ret value of ah even tho it is a side effect of the
|
|
; original dispatch code in the rom bios.
|
|
|
|
i16vStdFns:
|
|
or ah, ah
|
|
jz i16v00h ; read key, wait
|
|
dec ah
|
|
jz i16v01h ; read key no wait
|
|
dec ah
|
|
jz i16v02h ; get shift state
|
|
dec ah
|
|
jz i16viret ; we don't support ah=3, set kbd rate
|
|
dec ah
|
|
jz i16viret ; undefined function
|
|
dec ah
|
|
jz i16v05h ; push char into kbd buffer
|
|
; the rest are undefined\unsupported
|
|
|
|
; normal iret exit
|
|
i16viret:
|
|
pop bx
|
|
pop ds
|
|
jmp iret_com
|
|
|
|
|
|
; return shift state in al
|
|
i16v02h:
|
|
mov al, ds:[KB_FLAG]
|
|
jmp i16viret
|
|
|
|
|
|
i16v05h:
|
|
push si
|
|
mov bx, word ptr ds:[BUFFER_TAIL]
|
|
mov si, bx
|
|
call IncrBuffPtr
|
|
cmp bx, word ptr ds:[BUFFER_HEAD]
|
|
je i16v05h1
|
|
mov word ptr ds:[si], cx
|
|
mov word ptr ds:[BUFFER_TAIL], bx
|
|
mov al, 0
|
|
pop si
|
|
jmp i16viret
|
|
|
|
i16v05h1:
|
|
mov al, 1
|
|
pop si
|
|
jmp i16viret
|
|
|
|
|
|
; read a character, wait if none available
|
|
i16v00h:
|
|
mov bx, word ptr ds:[BUFFER_HEAD]
|
|
cmp bx, word ptr ds:[BUFFER_TAIL]
|
|
jne i16v00h1
|
|
call DOSTI
|
|
mov ax, 09002h
|
|
int 15h ; wait device
|
|
|
|
i16v00h0:
|
|
call DOCLI
|
|
mov bx, word ptr ds:[BUFFER_HEAD]
|
|
cmp bx, word ptr ds:[BUFFER_TAIL]
|
|
|
|
i16v00h1:
|
|
call UpdateLed
|
|
jne i16v00h2
|
|
call IdlePoll
|
|
jmp i16v00h0
|
|
|
|
i16v00h2: ; translate.....
|
|
mov ax, [bx]
|
|
call IncrBuffPtr
|
|
mov word ptr ds:[BUFFER_HEAD], bx
|
|
call TranslateStd
|
|
jc i16v00h0
|
|
call IdleInit
|
|
jmp i16viret
|
|
|
|
|
|
; read a character, nowait if none available
|
|
i16v01h:
|
|
mov bx, word ptr ds:[BUFFER_HEAD] ;;maybe should turn IF on ??
|
|
cmp bx, word ptr ds:[BUFFER_TAIL]
|
|
mov ax, [bx]
|
|
call UpdateLed
|
|
je i16vretf1
|
|
|
|
call IdleInit
|
|
call TranslateStd
|
|
call DOSTI
|
|
jnc i16vretf5 ; got a key, all done!
|
|
call IncrBuffPtr ; throw away key
|
|
mov word ptr ds:[BUFFER_HEAD], bx
|
|
jmp i16v01h ; go for the next one
|
|
|
|
|
|
; ExtKbd read a character, nowait if none available
|
|
i16v11h:
|
|
mov bx, word ptr ds:[BUFFER_HEAD] ;;maybe should turn IF on ??
|
|
cmp bx, word ptr ds:[BUFFER_TAIL]
|
|
mov ax, [bx]
|
|
call UpdateLed
|
|
je i16vretf1 ; common retf stuff for nowait
|
|
|
|
call IdleInit
|
|
call TranslateExt
|
|
call DOSTI
|
|
jmp i16vretf5
|
|
|
|
|
|
; retf2 exit preserving flags
|
|
i16vretf1:
|
|
call DOSTI
|
|
push ax
|
|
lahf
|
|
push ax
|
|
|
|
mov ax, cs:Icounter
|
|
cmp ax, cs:MinTicks
|
|
jb i16vretf2
|
|
|
|
mov ah, 1 ; polling kbd, idle now
|
|
BOP 16h
|
|
jmp i16vretf4
|
|
|
|
i16vretf2:
|
|
inc cs:CharsPerTick
|
|
|
|
|
|
i16vretf4:
|
|
pop ax
|
|
sahf
|
|
pop ax
|
|
|
|
i16vretf5:
|
|
pop bx
|
|
pop ds
|
|
retf 2
|
|
|
|
|
|
|
|
i16vExtFns:
|
|
sub ah, 10h
|
|
jz i16v10h ; extended read key, wait
|
|
dec ah
|
|
jz i16v11h ; extended read key, nowait
|
|
dec ah
|
|
jz i16v12h ; extended shift status
|
|
jmp i16viret ; undefined
|
|
|
|
|
|
; return extended shift state
|
|
i16v12h:
|
|
mov al, ds:[KB_FLAG_1]
|
|
mov ah, al
|
|
and al, SYS_SHIFT
|
|
push cx
|
|
mov cl, 5
|
|
shl al, cl
|
|
pop cx
|
|
and ah, NOT (SYS_SHIFT+HOLD_STATE+INS_SHIFT)
|
|
or al, ah
|
|
mov ah, ds:[KB_FLAG_3]
|
|
and ah, NOT (LC_E1+LC_E0)
|
|
or ah, al
|
|
mov al, ds:[KB_FLAG]
|
|
jmp i16viret
|
|
|
|
|
|
; ExtKbd read a character, wait if none available
|
|
i16v10h:
|
|
mov bx, word ptr ds:[BUFFER_HEAD]
|
|
cmp bx, word ptr ds:[BUFFER_TAIL]
|
|
jne i16v10h1
|
|
call DOSTI
|
|
mov ax, 09002h
|
|
int 15h ; wait device
|
|
|
|
i16v10h0:
|
|
call DOCLI
|
|
mov bx, word ptr ds:[BUFFER_HEAD]
|
|
cmp bx, word ptr ds:[BUFFER_TAIL]
|
|
|
|
i16v10h1:
|
|
call UpdateLed
|
|
jne i16v10h2
|
|
call IdlePoll
|
|
jmp i16v10h0
|
|
|
|
i16v10h2: ; translate.....
|
|
mov ax, [bx]
|
|
call IncrBuffPtr
|
|
mov word ptr ds:[BUFFER_HEAD], bx
|
|
call TranslateExt
|
|
call IdleInit
|
|
jmp i16viret
|
|
|
|
|
|
|
|
; IdlePoll - Spins waiting for a key, doing idle callouts as needed
|
|
; flags trashed, all registers preserved
|
|
; interrupts are left on upon exit
|
|
;
|
|
IdlePoll proc near
|
|
push ax
|
|
|
|
call DOSTI
|
|
mov ah, 2 ; Idle_waitio
|
|
BOP 16h
|
|
IPoll1:
|
|
mov bx, word ptr ds:[BUFFER_HEAD]
|
|
cmp bx, word ptr ds:[BUFFER_TAIL] ; interrupts are off only
|
|
jne IPoll3 ; safe to peek for change
|
|
|
|
mov ax, cs:Icounter
|
|
cmp ax, cs:MinTicks
|
|
jae IPoll2
|
|
inc cs:CharsPerTick
|
|
jmp IPoll1
|
|
IPoll2:
|
|
mov ah, 1 ; idle now
|
|
BOP 16h
|
|
IPoll3:
|
|
pop ax
|
|
ret
|
|
IdlePoll endp
|
|
|
|
|
|
|
|
|
|
; IdleInit - reinits the idle indicators, dups functionality
|
|
; of IDLE_init()
|
|
;
|
|
IdleInit proc near
|
|
|
|
mov cs:Icounter, 0
|
|
mov cs:CharsPerTick, 0
|
|
|
|
ret
|
|
IdleInit endp
|
|
|
|
|
|
; TranslateExt - Retrieves and translates next scan code
|
|
; pair for extended kbd
|
|
;
|
|
; input: ax - raw scan code pair
|
|
; output: ax - translated scan code pair
|
|
;
|
|
; all other flags,registers preserved
|
|
|
|
TranslateExt proc near
|
|
|
|
push bx
|
|
push ax
|
|
lahf
|
|
mov bx, ax
|
|
pop ax
|
|
push bx
|
|
|
|
cmp al, 0f0h
|
|
jne TExt1
|
|
or ah, ah
|
|
jz TExt1
|
|
xor al, al
|
|
TExt1:
|
|
mov bx, ax
|
|
pop ax
|
|
sahf
|
|
mov ax, bx
|
|
pop bx
|
|
ret
|
|
|
|
TranslateExt endp
|
|
|
|
|
|
; TranslateStd - Retrieves and translates next scan code
|
|
; pair for standard kbd
|
|
;
|
|
; input: ax - raw scan code pair
|
|
; output: ax - translated scan code pair
|
|
; returns carry for throw away
|
|
; all other flags,registers preserved
|
|
|
|
TranslateStd proc near
|
|
|
|
push bx
|
|
push ax
|
|
lahf
|
|
mov bx, ax
|
|
pop ax
|
|
push bx
|
|
|
|
cmp ah, 0e0h
|
|
jne TStd1
|
|
|
|
; keypad enter or '/'
|
|
mov ah, 1ch ; assume enter key
|
|
cmp al, 0dh
|
|
je TStdNoCarry
|
|
cmp al, 0ah
|
|
je TStdNoCarry
|
|
mov ah, 35h ; oops it was key pad!
|
|
jmp TStdNoCarry
|
|
|
|
TStd1:
|
|
cmp ah, 84h
|
|
ja TStdCarry ; extended key ?
|
|
|
|
cmp al, 0f0h ; fill in key ?
|
|
jne TStd2
|
|
or ah, ah ; ah = 0 is special
|
|
jz TStdNoCarry
|
|
jmp TStdCarry
|
|
|
|
TStd2:
|
|
cmp al, 0e0h ; convert to compatible output
|
|
jne TStdNoCarry
|
|
or ah, ah
|
|
jz TStdNoCarry
|
|
xor al, al
|
|
|
|
TStdNoCarry:
|
|
mov bx, ax
|
|
pop ax
|
|
sahf
|
|
mov ax, bx
|
|
pop bx
|
|
clc
|
|
ret
|
|
|
|
TStdCarry:
|
|
mov bx, ax
|
|
pop ax
|
|
sahf
|
|
mov ax, bx
|
|
pop bx
|
|
stc
|
|
ret
|
|
TranslateStd endp
|
|
|
|
|
|
|
|
; IncrBuffPtr - increments the buffer pointer
|
|
;
|
|
; input: ds:bx - curr buf ptr
|
|
; output: ds:bx - new buf ptr
|
|
; does not update the bios buf ptr
|
|
|
|
IncrBuffPtr proc near
|
|
inc bx
|
|
inc bx
|
|
cmp bx, word ptr ds:[BUFFER_END]
|
|
jne ibpExit
|
|
mov bx, word ptr ds:[BUFFER_START]
|
|
ibpExit:
|
|
ret
|
|
IncrBuffPtr endp
|
|
|
|
|
|
|
|
; UpdateLed - forms the data byte for the mode indicators
|
|
; updates the led bits (MAKE_LED,SEND_LED)
|
|
;
|
|
; input: none
|
|
; output: led bits updated
|
|
;
|
|
; Caveats: all low flags,registers preserved
|
|
; MUST be called with interrupts off
|
|
; does not update the kbd hardware (send_led)
|
|
;
|
|
UpdateLed proc near
|
|
|
|
push bx
|
|
push cx
|
|
push ax
|
|
lahf
|
|
push ax
|
|
|
|
; make_led
|
|
mov al, byte ptr ds:[KB_FLAG] ; get led bits
|
|
and al, CAPS_STATE+NUM_STATE+SCROLL_STATE
|
|
mov cl, 4
|
|
rol al, cl ; shift for kb_flag_2
|
|
and al, KB_LEDS ; only led mode bits
|
|
|
|
mov bl, byte ptr ds:[KB_FLAG_2]
|
|
xor bl, al ; see of different
|
|
and bl, KB_LEDS ; only led mode bits
|
|
jz UledExit
|
|
|
|
|
|
test byte ptr ds:[KB_FLAG_2], KB_PR_LED ;if update under way
|
|
jnz ULedExit ; skip update
|
|
or byte ptr ds:[KB_FLAG_2], KB_PR_LED ;else upd in progress
|
|
|
|
mov ah, 3 ; inform softpc to set lights
|
|
BOP 16h
|
|
|
|
and byte ptr ds:[KB_FLAG_2], NOT KB_LEDS ;clear led bits
|
|
or byte ptr ds:[KB_FLAG_2], al ;stick in new led bits
|
|
and byte ptr ds:[KB_FLAG_2], NOT KB_PR_LED ;clear upd bit
|
|
|
|
ULedExit:
|
|
pop ax
|
|
sahf
|
|
pop ax
|
|
pop cx
|
|
pop bx
|
|
|
|
ret
|
|
UpdateLed endp
|
|
|
|
|
|
|
|
|
|
; IVT 17 is printer IO, done above.
|
|
|
|
int18h_vector: ; ROM BASIC, copied from BIOS2.ASM
|
|
bop 18h
|
|
jmp iret_com
|
|
int19h_vector: ; reboot vector, we terminate vdm!
|
|
bop 19h
|
|
jmp iret_com
|
|
|
|
|
|
IdleTicLo dw 0
|
|
IdleTicHi dw 0
|
|
IdleTicNum db 0
|
|
|
|
int1Ah_vector: ; Time of day.
|
|
call DOSTI
|
|
cmp ah, 2
|
|
jl i1aTic1
|
|
|
|
bop 1ah
|
|
jmp iret_com
|
|
|
|
i1aTic1:
|
|
push ds ; bios data adressable
|
|
push bx
|
|
push ax
|
|
mov ax, 40h
|
|
mov ds, ax
|
|
pop ax
|
|
call DOCLI
|
|
|
|
or ah, ah ; fn 0 or fn 1 ?
|
|
jnz i1aTic5
|
|
|
|
i1aTic2:
|
|
mov al, byte ptr ds:[TIMER_OVFL] ; GetTickCount
|
|
mov cx, word ptr ds:[TIMER_HIGH]
|
|
mov dx, word ptr ds:[TIMER_LOW]
|
|
|
|
|
|
; If time stamp is within 1 tic of curr tic count
|
|
; do idle polling managment
|
|
|
|
cmp cs:IdleTicHi, cx ; check TIMER_HIGH
|
|
jnz i1aTic8
|
|
|
|
mov bx, cs:IdleTicLo ; check TIMER_LOW
|
|
cmp bx, dx
|
|
jz i1aTic3
|
|
inc bx
|
|
cmp bx, dx
|
|
jnz i1aTic8
|
|
|
|
|
|
i1aTic3:
|
|
inc cs:IdleTicNum ; Yes, inc poll count
|
|
cmp cs:IdleTicNum, 16 ; Is poll count too hi ?
|
|
jb i1aTic9
|
|
|
|
call DOSTI
|
|
xor ax,ax ; Yes, do idle BOP
|
|
dec cs:IdleTicLo ; make sure only bop once
|
|
BOP 5ah
|
|
call DOCLI
|
|
jmp short i1aTic2
|
|
|
|
i1aTic5:
|
|
mov word ptr ds:[TIMER_LOW], dx ; SetTickCount
|
|
mov word ptr ds:[TIMER_HIGH], cx
|
|
|
|
i1aTic8:
|
|
mov cs:IdleTicNum, 0 ; reset idle indicators
|
|
|
|
i1aTic9:
|
|
mov cs:IdleTicLo, dx ; store time stamp
|
|
mov cs:IdleTicHi, cx
|
|
mov byte ptr ds:[TIMER_OVFL], 0 ; common TicCount exit
|
|
pop bx
|
|
pop ds
|
|
jmp iret_com
|
|
|
|
|
|
; IVT 1B is keyboard break, set to dummy.
|
|
|
|
|
|
int1Eh_vector:
|
|
bop 1eh
|
|
jmp iret_com
|
|
|
|
int70h_vector: ; Real time clock, copied from BIOS1.ASM
|
|
bop 70h ; rtc_bios.c:rtc_int()
|
|
jmp iret_com
|
|
|
|
int4Ah_caller:
|
|
call DOSTI ; Called from base\bios\rtc_bios.c:rtc_int()
|
|
int 4ah ; User installed alarm.
|
|
jmp r1
|
|
r1: jmp r2
|
|
r2: jmp r3
|
|
r3:
|
|
call DOCLI
|
|
bop 0feh
|
|
|
|
int71h_vector: ; redirect, copied from BIOS1.ASM
|
|
bop 71h
|
|
int 0Ah
|
|
jmp iret_com
|
|
int75h_vector: ; NPX 287.
|
|
bop 75h
|
|
int 02h
|
|
jmp iret_com
|
|
;=================================================================
|
|
; End of pseudo-ROM vectuz.
|
|
;=================================================================
|
|
|
|
|
|
;================================================================
|
|
; Wait for interrupts
|
|
;================================================================
|
|
|
|
cpu_nop_code:
|
|
call DOSTI
|
|
jmp short nxt1
|
|
nxt1: jmp short nxt2
|
|
nxt2: jmp short nxt3
|
|
nxt3: bop %BIOS_CPU_QUIT
|
|
|
|
public SpcKbdEnd
|
|
SpcKbdEnd label byte
|
|
|
|
align 4 ;; makes MIPS happy
|
|
|
|
; offset table for redirected functions
|
|
kio_table dw 29 dup(?)
|
|
|
|
public InstSpcKbd
|
|
|
|
;
|
|
; InstSpcKbd - Installs the softpc custom interrupt hooks
|
|
;
|
|
; Inputs: ds == Resident location of SysInitSeg
|
|
; Outputs: None
|
|
;
|
|
InstSpcKbd proc near
|
|
|
|
pusha
|
|
call DOCLI
|
|
|
|
; The following vectors are used for both x86\mips
|
|
; The dos interrupts Int 25\Int26 are handled by the dos kerenl
|
|
xor ax, ax
|
|
mov es, ax
|
|
mov word ptr es:[08h*4], offset int08h_vector
|
|
mov word ptr es:[(08h*4)+2], ds
|
|
mov word ptr es:[09h*4], offset int09h_vector
|
|
mov word ptr es:[(09h*4)+2], ds
|
|
mov word ptr es:[13h*4], offset int13h_vector
|
|
mov word ptr es:[(13h*4)+2], ds
|
|
mov word ptr es:[16h*4], offset int16h_vector
|
|
mov word ptr es:[(16h*4)+2], ds
|
|
mov word ptr es:[40h*4], offset int40h_vector
|
|
mov word ptr es:[(40h*4)+2], ds
|
|
mov word ptr es:[19h*4], offset int19h_vector
|
|
mov word ptr es:[(19h*4)+2], ds
|
|
mov word ptr es:[1ah*4], offset int1Ah_vector
|
|
mov word ptr es:[(1ah*4)+2], ds
|
|
|
|
|
|
|
|
; BOP 5F - send interesting addresses to softpc C BIOS
|
|
; CS seg of kio_table
|
|
; DS seg of resident keyboard code
|
|
; DI offset of bop table
|
|
; CX size of bop table entry
|
|
; SI offset of kio_table
|
|
mov si,offset sysinitgrp:kio_table
|
|
push ds
|
|
push cs
|
|
pop ds
|
|
mov word ptr [si], offset shift_keys ;K6
|
|
mov word ptr [si+2], offset shift_masks ;K7
|
|
mov word ptr [si+4], offset ctl_n_table ;K8
|
|
mov word ptr [si+6], offset ctl_f_table ;K9
|
|
mov word ptr [si+8], offset lowercase ;K10
|
|
mov word ptr [si+10], offset uppercase ;K11
|
|
mov word ptr [si+12], offset alt_table ;K30
|
|
mov word ptr [si+14], offset dummy_vector
|
|
mov word ptr [si+16], offset print_screen_caller
|
|
mov word ptr [si+18], offset int15h_caller
|
|
mov word ptr [si+20], offset cpu_nop_code
|
|
mov word ptr [si+22], offset int15h_vector
|
|
mov word ptr [si+24], offset Icounter
|
|
mov word ptr [si+26], offset int4Ah_caller
|
|
mov word ptr [si+28], offset keyboard_break_caller
|
|
mov word ptr [si+30], offset int10h_caller
|
|
mov word ptr [si+32], offset int10h_vector
|
|
mov word ptr [si+34], offset use_host_int10
|
|
mov word ptr [si+36], offset ega_parm_setup
|
|
mov word ptr [si+38], offset changing_mode
|
|
mov word ptr [si+40], offset prt_status
|
|
mov word ptr [si+42], offset wait_int
|
|
mov word ptr [si+44], offset floppy_table
|
|
mov word ptr [si+46], offset vga_1b_table
|
|
mov word ptr [si+48], offset conf_table
|
|
mov word ptr [si+50], offset int08h_vector
|
|
mov word ptr [si+52], offset int13h_vector
|
|
mov word ptr [si+54], offset int13h_caller
|
|
; The last entry is reserved for assertion checking
|
|
mov word ptr [si+56], VERSIONID
|
|
pop ds
|
|
|
|
; mov si, offset kio_table
|
|
mov di, offset iret_bop_table
|
|
mov cx, offset iret_end_first_entry - offset iret_bop_table
|
|
mov ax, VERSIONID
|
|
bop 5fh
|
|
jc isk_int9
|
|
jmp isk_Exit
|
|
isk_int9:
|
|
|
|
; save old video int
|
|
xor ax, ax
|
|
mov es, ax
|
|
mov bx, es:[40h]
|
|
mov si, offset host_int10
|
|
mov word ptr ds:[si], bx
|
|
mov bx, es:[42h]
|
|
mov word ptr ds:[si+2], bx
|
|
|
|
; save old secondary video int (42h)
|
|
mov bx, es:[108h]
|
|
mov si, offset host_int42
|
|
mov word ptr ds:[si], bx
|
|
mov bx, es:[10ah]
|
|
mov word ptr ds:[si+2], bx
|
|
|
|
|
|
;-----------------------------------------------------------
|
|
;
|
|
; Crazy vector grabber
|
|
;
|
|
; Works OK on DEC PC when grab INT's 6, 11, 16, 17, 42.
|
|
; Now try and avoid all accesses to host ROM.
|
|
;
|
|
; At this point we assume ES=0
|
|
;-----------------------------------------------------------
|
|
|
|
; Grab some prominent vectors for pseudo-ROM routines.
|
|
; start at Int 0h and work our way up as needed
|
|
cld
|
|
|
|
mov di, 20
|
|
mov ax, offset int05h_vector ; INT 05h
|
|
stosw ; Print screen
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset int06h_vector ; INT 06h
|
|
stosw ; Illegal instruction.
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset unexp_int ; INT 07h
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
|
|
; int 8h Timer hardware vector already done for both x86\mips
|
|
; int 9h kbd hardware vector already done for both x86\mips
|
|
add di, 8
|
|
|
|
mov ax, offset unexp_int ; INT 0ah
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset unexp_int ; INT 0bh
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset unexp_int ; INT 0ch
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset unexp_int ; INT 0dh
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset int0e_vector ; INT 0eh
|
|
stosw ; Floppy hardware int.
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset unexp_int ; INT 0fh
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset int10h_vector ; INT 10h
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset int11h_vector ; INT 11h
|
|
stosw ; Equipment check.
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset int12h_vector ; INT 12h
|
|
stosw ; Get memory size.
|
|
mov ax, ds
|
|
stosw
|
|
|
|
; int 13h already done (see above) for both mips\x86
|
|
|
|
mov di, 14h*4 ; Communications.
|
|
mov ax, offset int14h_vector
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset int15h_vector ; INT 15h
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
|
|
; int 16h kbd hardware vector already done for both x86\mips
|
|
add di, 4
|
|
|
|
mov ax, offset int17h_vector ; INT 17h
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset int18h_vector ; INT 18h
|
|
stosw ; ROM BASIC.
|
|
mov ax, ds
|
|
stosw
|
|
|
|
; int 19h (reboot vector) already done for both x86\mips
|
|
|
|
; int 1ah, time of day, already done for both x86\mips
|
|
|
|
mov di, 1Bh*4
|
|
mov ax, offset dummy_vector ; INT 1Bh
|
|
stosw ; Keyboard break.
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset dummy_vector ; INT 1Ch
|
|
stosw ; Timer tick.
|
|
mov ax, ds
|
|
stosw
|
|
|
|
mov di, 1Eh*4 ; Floppy parameters.
|
|
mov ax, offset bios_floppy_table
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
|
|
; int 40h already done (see above) for both mips\x86
|
|
|
|
mov di, 41h*4
|
|
mov ax, offset unexp_int ; INT 41h
|
|
stosw ; Hard disk parameters.
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset int42h_vector ; INT 42h
|
|
stosw ; Default video.
|
|
mov ax, ds
|
|
stosw
|
|
|
|
mov di, 70h*4 ; Real time clock init.
|
|
mov ax, offset int70h_vector
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset int71h_vector ; INT 71h Redirect.
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset intD11_vector ; INT 72h D11 int
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset intD11_vector ; INT 73h D11 int
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset intD11_vector ; INT 74h D11 int
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset int75h_vector ; INT 75h 287 int
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset intD11_vector ; INT 76h D11 int
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
mov ax, offset intD11_vector ; INT 77h D11 int
|
|
stosw
|
|
mov ax, ds
|
|
stosw
|
|
|
|
|
|
isk_Exit:
|
|
call DOSTI
|
|
popa
|
|
ret
|
|
|
|
InstSpcKbd endp
|
|
|
|
SpcKbdSeg ends
|
|
end
|