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major_version equ 4 ;Major DOS version
minor_version equ 00 ;Minor DOS Version
expected_version equ (MINOR_VERSION SHL 8)+MAJOR_VERSION
if1
%OUT ... for DOS Version 4.00 ...
endif
;******************************
;Each assembler program should:
; mov ah,030h ;DOS Get Version function
; int 021h ;Version ret. in AX,minor version first
; cmp ax,expected_version ;ALL utilities should check for an
; jne error_handler ; EXACT version match.
;******************************
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