?? getchar.asm
字號:
;*
;* CW : Character Oriented Windows
;*
;* getchar.asm : get character at a given position.
include user.inc
include screen.inc
include inscr.inc
;----------------------------------------------------------------------------
sBegin DATA
assumes DS,DGROUP
externB <instCur> ;* INST type
externB <axMac> ; Maximum column number
sEnd DATA
;----------------------------------------------------------------------------
sBegin SCREEN
assumes CS,SCREEN
assumes DS,DGROUP
assumes SS,DGROUP
assumes ES,nothing
;****** GetChar ********
;* entry : ax, ay
;* exit : n/a
cProc GetChar,<FAR,PUBLIC,ATOMIC>
parmB axGetChar
parmB ayGetChar
cBegin GetChar
mov es,instCur.psPrimInst
CalcCoord axGetChar,ayGetChar
mov bx,ax
mov al,es:[bx]
cEnd GetChar
sEnd SCREEN
END
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