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26 lines
889 B
26 lines
889 B
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major_version equ 5 ;Major DOS version
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minor_version equ 00 ;Minor DOS Version for int 21h/30h
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minor_version_NT equ 50 ;Minor DOS VersionN for int 21h/3306
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expected_version equ (MINOR_VERSION SHL 8)+MAJOR_VERSION
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DOSREVNM equ 00000000B ; bits 0-2 = revision number of DOS
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; currently 0.
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DOSINROM equ 00001000B ; bit 3 of ver flags returned in BH
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DOSINHMA equ 00010000B ; bit 4 of ver flags
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; if1
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; %OUT ... for DOS Version 5.00 ...
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; endif
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;******************************
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;Each assembler program should:
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; mov ah,030h ;DOS Get Version function
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; int 021h ;Version ret. in AX,minor version first
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; cmp ax,expected_version ;ALL utilities should check for an
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; jne error_handler ; EXACT version match.
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;******************************
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