mirror of https://github.com/nmlgc/ReC98.git
68 lines
1.2 KiB
NASM
68 lines
1.2 KiB
NASM
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; master library -
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;
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; Description:
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; DOSBOX内ならばMachine_StateにDOSBOXビットを立てる
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;
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; Functions/Procedures:
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; unsigned get_machine_dosbox(void);
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;
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; Parameters:
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; none
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;
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; Returns:
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; Machine_Stateの値がそのまま返る
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;
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; Binding Target:
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; Microsoft-C / Turbo-C / Turbo Pascal
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;
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; Running Target:
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; DOS, OS/2, Windows, Windows NT
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;
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; Requiring Resources:
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; CPU: 8086?
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;
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; Notes:
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;
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;
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; Assembly Language Note:
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;
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;
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; Compiler/Assembler:
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; TASM 3.0
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; OPTASM 1.6
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;
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; Author:
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; 恋塚昭彦
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;
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; Revision History:
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; 95/ 3/ 8 Initial: getmacdb.asm/master.lib 0.22k
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; 95/ 3/17 [M0.22k] OS/2 1.X, 3.Xに対応
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DOSBOX EQU 8000h
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get_machine_dosbox proc ; get_machine_dosbox() {
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; DOS互換BOX内かどうかの判定
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mov AX,3306h
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int 21h
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cmp AL,0ffh
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je short DOS_OR_WINDOWS
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cmp BX,3205h ; 5.50: WindowsNT DOS BOX
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je short IN_DOSBOX
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cmp BL,10 ; 10.xx: OS/2 1.x
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je short IN_DOSBOX
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cmp BL,20 ; 20.xx: OS/2 2.x
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je short IN_DOSBOX
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cmp BL,30 ; 30.xx: OS/2 3.x
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je short IN_DOSBOX
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DOS_OR_WINDOWS:
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mov AX,1600h
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int 2fh
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and AL,7fh ; nonzero: Win3.x 386Enhanced (or Win386)
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jz short RAW_DOS
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IN_DOSBOX:
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or Machine_State,DOSBOX
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RAW_DOS:
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mov AX,Machine_State
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ret
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endp ; }
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