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119 lines
3.9 KiB
119 lines
3.9 KiB
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; Copyright (c) Microsoft Coropration 1988-1991. All Rights Reserved.
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;****************************************************************
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;* *
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;* SEGDEFS.INC -- Segment Declarations for Dos Extender *
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;* *
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;****************************************************************
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;* Revision History: *
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;* *
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;* 12/13/88 (GeneA): reordered segments so that the code *
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;* segment is last. *
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;* *
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;****************************************************************
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;
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; -------------------------------------------------------
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; DOS EXTENDER SEGMENTS
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; -------------------------------------------------------
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;; Touch here to force rebuild of DOSX! EarleH
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?DF=1
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?PLM=1
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?WIN=0
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?MEDIUM=1
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DOS5=1
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IFNDEF WHEN_COMMAND_COM_WORKS
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WINDOWS=1
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ELSE
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WINDOWS=0
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ENDIF
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include .\cmacros.inc
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DXDATA segment para public 'DATA'
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DXDATA ends
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DXSTACK segment para stack 'STACK'
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DXSTACK ends
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;
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; This segment contains both real mode and protected mode code and
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; resides in low memory.
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DXCODE segment para public 'CODE'
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DXCODE ends
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;
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; This segment contains protected mode code only, and is moved up
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; into extended memory during the initialization process.
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DXPMCODE segment para public 'PMCODE'
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DXPMCODE ends
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; -------------------------------------------------------
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; GROUP DECLARATIONS
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; -------------------------------------------------------
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DGROUP group DXDATA, DXSTACK
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; -------------------------------------------------------
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; MS-DOS PROGRAM SEGMENT PREFIX DEFINITION
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; -------------------------------------------------------
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PSPSEG segment at 0
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fnExit dw ? ;INT 20h instruction for termination linkage
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segMemEnd dw ? ;segment address of end of program's memory
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rsvd1 db ? ;undefined
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fnDosFunc db 5 dup (?) ;far call to DOS function dispatcher
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lpfnParent dd ? ;far pointer to parent program
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lpfnInt23 dd ? ;previous contents of INT 23h vector (^C)
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lpfnInt24 dd ? ;previous contents of INT 24h vector
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segParentPSP dw ? ;segment address of parent PSP
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bFileTable db 20 dup (?) ;process file table
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segEnviron dw ? ;segment address of environment
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lpStack dd ? ;application's SS:SP (updated on each dos call)
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cbFileTable dw ? ;size of process file table
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lpFileTable dd ? ;far pointer to process file table
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org 5Ch
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fcbDefault1 db 10h dup (?) ;default FCB 1
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fcbDefault2 db 10h dup (?) ;default FCB 2
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org 80h
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cbCommand db ? ;lenght of command string
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chCommand db 7Fh dup (?) ;command string
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PSPSEG ends
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; -------------------------------------------------------
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; BIOS DATA SEGMENT DEFINITIONS
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; -------------------------------------------------------
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BIOS_DATA segment at 40h ;BIOS Data segment
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org 67h
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IO_ROM_INIT dw ? ;Shutdown code 0Ah will cause the
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IO_ROM_SEG dw ? ; bios to return control to the far
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; address stored here.
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;Shutdown code 09h will cause the
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; bios to load SS:SP from here and
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; do an IRET.
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INTR_FLAG db ?
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org 72h
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RESET_FLAG dw ? ;For Ctrl-Alt-Del
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BIOS_DATA ends
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; -------------------------------------------------------
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;****************************************************************
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