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Simple Line Repeat Draw Program

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Simple Line Repeat Draw Program A place for discussing programming languages not covered in specific forums such as Assembler, COBOL, etc. - you get the idea.

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  #1  
Old March 31st, 2008, 03:30 AM
Treymac Treymac is offline
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Simple Line Repeat Draw Program
Hey guys. I'm adapting a simple program from my text just to try the concept that I will use in another way. Any ways, what I'm trying to do now is make a line repeat. My book has the program drawing the line once. So here is what I've done.

Code:
	MOV AX,0600H                    ;scroll the screen
	MOV BH,07                       ;normal attribute
	MOV CX,0000                     ;from row=00,column=00
	MOV DX,184FH                    ;to row=18H,column=4FH
	INT 10H                         ;invoke interrupt to clear screen

	MOV AH,00                       ;set mode
	MOV AL,06                       ;mode = 06 (CGA high resolution)
	INT 10H                         ;invoke interrupt to change mode

	MOV CX,100                      ;start line at column = 100
	MOV DX,50                       ;and row = 50

	JMP LOC                         ;jump to LOC

BACK:	MOV AH,0CH                      ;AH=0CH to draw line
	MOV AL,01                       ;pixels = white
	INT 10H                         ;invoke interrupt to draw a line
	INC CX                          ;increment horizontal position
	CMP CX,200                      ;draw line until column=200
	JNZ BACK                        ;if not equal, jump to BACK
	JMP LOC                         ;else, jump to LOC

LOC:	MOV CX,100			;set column back to 100
	DEC DX                          ;decrement row
	JMP BACK                        ;jump to back


I think it should work, I have no idea why it doesn't. Can anybody help me out here?
Thanks a lot.
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Old March 31st, 2008, 04:12 AM
Treymac Treymac is offline
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ok, never mind. I'm using windows 98 to program in, and apparently ctrl+s for saving wasn't thought of yet.
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Old March 31st, 2008, 01:07 PM
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Actually, it's going to depend on the editor you're using rather than the version of Windows. Which are you using, anyway?
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Old March 31st, 2008, 01:38 PM
Treymac Treymac is offline
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Hey, ya I forgot to mention, I'm using notepad.
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