mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
181 lines
5.3 KiB
181 lines
5.3 KiB
PAGE ,132
|
|
TITLE DXOEM.ASM -- Dos Extender OEM Interface
|
|
|
|
; Copyright (c) Microsoft Corporation 1988-1991. All Rights Reserved.
|
|
|
|
;***********************************************************************
|
|
;
|
|
; DXOEM.ASM - DOS Extender OEM Interface
|
|
;
|
|
;-----------------------------------------------------------------------
|
|
;
|
|
; This module contains the routines that may need to be modified by OEMs
|
|
; when adding new device/interface support to the Microsoft 286 DOS
|
|
; Extender portion of Windows/286. There are four routines contained
|
|
; in this module:
|
|
;
|
|
; InitializeOEM - called during DOSX initialization
|
|
;
|
|
; SuspendOEM - called when the protected mode app is about
|
|
; to be suspended (currently when running a
|
|
; standard DOS 'old' app from Windows).
|
|
;
|
|
; ResumeOEM - called when the protected mode app is about
|
|
; to be resumed (currently when returning from
|
|
; a standard DOS 'old' app to Windows).
|
|
;
|
|
; TerminateOEM - called during DOSX termination
|
|
;
|
|
; Note: when this module refers to the 'OEM layer,' it is refering to
|
|
; the 286 DOS Extender device drivers, API mappers, etc., not the
|
|
; Windows OEM layer.
|
|
;
|
|
;-----------------------------------------------------------------------
|
|
;
|
|
; 06/28/89 jimmat Original version.
|
|
; 11/29/90 amitc Removed SuspendOEM/ResumeOEM - not required for 3.1
|
|
; 11/29/90 amitc Moved call to 'InitLowHeap' from here to DXNETBIO.ASM
|
|
;
|
|
;***********************************************************************
|
|
|
|
.286p
|
|
|
|
; -------------------------------------------------------
|
|
; INCLUDE FILE DEFINITIONS
|
|
; -------------------------------------------------------
|
|
|
|
.xlist
|
|
.sall
|
|
include segdefs.inc
|
|
include gendefs.inc
|
|
include pmdefs.inc
|
|
.list
|
|
|
|
; -------------------------------------------------------
|
|
; GENERAL SYMBOL DEFINITIONS
|
|
; -------------------------------------------------------
|
|
|
|
|
|
; -------------------------------------------------------
|
|
; EXTERNAL SYMBOL DEFINITIONS
|
|
; -------------------------------------------------------
|
|
|
|
extrn InitNetMapper:NEAR
|
|
extrn TermNetMapper:NEAR
|
|
|
|
; -------------------------------------------------------
|
|
; DATA SEGMENT DEFINITIONS
|
|
; -------------------------------------------------------
|
|
|
|
DXDATA segment
|
|
|
|
extrn NetHeapSize:WORD
|
|
|
|
DXDATA ends
|
|
|
|
|
|
; -------------------------------------------------------
|
|
; CODE SEGMENT VARIABLES
|
|
; -------------------------------------------------------
|
|
|
|
DXCODE segment
|
|
|
|
DXCODE ends
|
|
|
|
DXPMCODE segment
|
|
|
|
DXPMCODE ends
|
|
|
|
; -------------------------------------------------------
|
|
subttl OEM Initialization Routine
|
|
page
|
|
; -------------------------------------------------------
|
|
; OEM INITIALIZATION ROUTINE
|
|
; -------------------------------------------------------
|
|
|
|
DXPMCODE segment
|
|
assume cs:DXPMCODE
|
|
|
|
;--------------------------------------------------------
|
|
; InitializeOEM -- This routine is called during DOSX initialization
|
|
; in order to initialize the OEM layer (device drivers, API
|
|
; mappers, etc.). It expectes to be called late enough in the
|
|
; initialization process that other interrupt mapping functions
|
|
; (like Int 21h) are available.
|
|
;
|
|
; This routine is called in protected mode, and can enable/disable
|
|
; interrupts if it so requires.
|
|
;
|
|
; Input: none
|
|
; Output: none
|
|
; Errors: none
|
|
; Uses: ax, all others preserved
|
|
|
|
assume ds:DGROUP,es:NOTHING,ss:NOTHING
|
|
public InitializeOEM
|
|
|
|
InitializeOEM proc near
|
|
|
|
; Initialize the NetBios mapper.
|
|
|
|
|
|
; ;;bugbug NetHeapSize isn't actually being used, other
|
|
; ;; than possibly to turn off the NETBIOS mapper
|
|
|
|
|
|
mov ax,NetHeapSize ;don't initialize if net heap
|
|
or ax,ax ; size set to zero
|
|
jz @f
|
|
|
|
call InitNetMapper ;initialize the NetBIOS mapper--CY set
|
|
; if NetBIOS not installed
|
|
@@:
|
|
ret
|
|
|
|
InitializeOEM endp
|
|
|
|
; -------------------------------------------------------
|
|
|
|
DXPMCODE ends
|
|
|
|
; -------------------------------------------------------
|
|
subttl OEM Termination Routine
|
|
page
|
|
; -------------------------------------------------------
|
|
; OEM TERMINATION ROUTINE
|
|
; -------------------------------------------------------
|
|
|
|
DXCODE segment
|
|
assume cs:DXCODE
|
|
|
|
; -------------------------------------------------------
|
|
; TerminateOEM -- This routine is called during DOSX termination
|
|
; to disable the OEM layer.
|
|
;
|
|
; Note: This routine must is called in REAL MODE! If some termination
|
|
; code must run in protected mode, the routine must switch to
|
|
; protected mode itself, and switch back to real mode before
|
|
; returning.
|
|
;
|
|
; Input: none
|
|
; Output: none
|
|
; Errors: none
|
|
; Uses: ax,bx,cx,dx,si,di,es
|
|
;
|
|
|
|
assume ds:DGROUP,es:NOTHING,ss:NOTHING
|
|
public TerminateOEM
|
|
|
|
TerminateOEM proc near
|
|
|
|
call TermNetMapper ;terminate the NetBIOS mapper
|
|
|
|
ret
|
|
|
|
TerminateOEM endp
|
|
|
|
; -------------------------------------------------------
|
|
|
|
DXCODE ends
|
|
;****************************************************************
|
|
end
|