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HAM Radio 1
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HamRadio.cdr
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tech
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pcbsrcs2
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util.asm
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Assembly Source File
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1991-02-07
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1KB
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53 lines
; assembly language graphics support routines
_DATA segment word public 'DATA'
_DATA ends
DGROUP group _DATA
_TEXT segment byte public 'CODE'
assume cs:_TEXT, ds:DGROUP
if 0
;void Dot( int color, int row, int col );
public _Dot
_Dot proc near ; write a dot on the screen
push bp
mov bp, sp
mov al, [bp+4] ; get color (byte)
mov ah, 0Ch ; write pixel function
xor bx, bx
mov dx, [bp+6] ; get row
mov cx, [bp+8] ; get column
int 10h ; call video rom bios
pop bp
ret
_Dot endp
;int GetMode( void );
public _GetMode
_GetMode proc near ; get the screen mode
mov ah, 0Fh ; get mode function
int 10h ; call video rom bios
xor ah, ah ; clear top byte (low byte has mode)
ret
_GetMode endp
;void SetMode( int mode );
public _SetMode
_SetMode proc near ; set the screen mode
push bp
mov bp, sp
mov al, [bp+4] ; get new mode
xor ah, ah ; set mode function
int 10h ; call video rom bios
pop bp
ret
_SetMode endp
endif
_TEXT ends
end