help on TASM video buffer pls

[helpmepls]

it is currently moving to the right. can someone teach me how to move the whole screen to the top?i really need help


.MODEL SMALL
.STACK 64
.DATA
;DATA FILE ARE LOCATED HERE

.CODE
MAIN PROC FAR
MOV AX,0B800h
MOV DS,AX
;CODE FILES ARE LOCATED HERE
MOV AL,03
INT 10H


HULAT:
MOV AH,00
INT 16H

CMP AL,'D'
JNZ HULAT
JMP RIGHT





RIGHT:
MOV BX,01DEH
MOV SI,01DCH

MOV AX,0000H
MOV AL,[BX]

PUSH AX

MOV CX,79

AGAIN:
MOV AL,[SI]
MOV BYTE PTR[BX],AL
SUB BX,2
SUB SI,2
LOOP AGAIN

POP AX
MOV [BX],AL

JMP HULAT


MOV AH,4CH
INT 21H
MAIN ENDP
END MAIN

[dargueta]

Do you want to scroll the screen upwards when the user presses a certain key? Here's how to scroll the screen up by one line.

mov     ax, 0601h   ; AH=06h, AL is # of lines to shift up
;if you want to clear the whole screen put AL=0

mov     bh, 07h     ; screen attr to fill blank lines @ bottom
xor     cx, cx      ; CH=upper left row, CL=upper left column (0,0)
mov     dx, 184fh   ; DL=lower right row, CL=lower right column

; 184fh corresponds to row 24, column 79. NOTE: I'm assuming you're
; using video mode 3 like you have at the beginning of your code. If you
; use a different video mode you're going to have to change the coordi-
; nates.

int     10h

[helpmepls]

thank u very much 4 the help bro. can u pls teach me what part of the program should i put or replace your codes? im still a bit new and cant seem to make the program to work=(

[dargueta]

I know what your code does, but what do you want it to do?

[helpmepls]

i have to make the screen go left,right top,down using wasd, i already got it to move to the left and right. but i have no idea how to make it go to the top and bottom. i was hoping to learn how to make it go up and down =)

[dargueta]

Ok, well you just need to use your if condition that you used for going right but change the key and labels. For example

mov    ah, 00h
int    16h

cmp    al, 'D'
je    do_right
cmp    al, 'S'
je    do_down
cmp    al, 'A'
je    do_left
cmp    al, 'W'
je    do_right

You would put my code in the do_down part, and the code for scrolling up is identical except you put 07h into AH instead of 06h.

[helpmepls]

.MODEL SMALL
.STACK 64
.DATA
;DATA FILE ARE LOCATED HERE

.CODE
MAIN PROC FAR
MOV AX,0B800h
MOV DS,AX
;CODE FILES ARE LOCATED HERE
MOV AL,03
INT 10H


HULAT:
MOV AH,00
INT 16H

CMP AL,'D'
JNZ HULAT
JMP RIGHT




RIGHT: MOV AX,0601H
MOV BH,07H

XOR CX,CX
MOV DX,0184FH






AGAIN:
MOV AL,[SI]
MOV BYTE PTR[BX],AL
SUB BX,2
SUB SI,2
LOOP AGAIN

POP AX
MOV [BX],AL

JMP HULAT


MOV AH,4CH
INT 21H
MAIN ENDP
END MAIN

[helpmepls]

sorry buy i still cant get it to work. even just going up. where do u mean should i put your code? i tried replacing right w/ ur code but i cant get it to work

.MODEL SMALL
.STACK 64
.DATA
;DATA FILE ARE LOCATED HERE

.CODE
MAIN PROC FAR
MOV AX,0B800h
MOV DS,AX
;CODE FILES ARE LOCATED HERE
MOV AL,03
INT 10H


HULAT:
MOV AH,00
INT 16H

CMP AL,'D'
JNZ HULAT
JMP RIGHT




RIGHT: MOV AX,0601H
MOV BH,07H

XOR CX,CX
MOV DX,0184FH






AGAIN:
MOV AL,[SI]
MOV BYTE PTR[BX],AL
SUB BX,2
SUB SI,2
LOOP AGAIN

POP AX
MOV [BX],AL

JMP HULAT


MOV AH,4CH
INT 21H
MAIN ENDP
END MAIN

[dargueta]

No, that's not what I meant. First you need to test for w and s, and use my code for those, not the up/down.

.MODEL SMALL
.STACK 64
.DATA
;DATA FILE ARE LOCATED HERE

;CODE FILES ARE LOCATED HERE
.CODE
MAIN PROC FAR
    MOV AX,0B800h
    MOV DS,AX        
    MOV AL,03
    INT 10H

    HULAT:
        MOV AH,00
        INT 16H

        CMP AL,'D'
        JZ  RIGHT
        
        CMP AL, 'A'
        JZ  LEFT
        
        CMP AL, 'W'
        JZ  UP
        
        CMP AL, 'S'
        JZ  DOWN

        JMP HULAT
        
    DOWN:
        ; MY CODE FOR GOING DOWN HERE
        
    UP:
        ; MY CODE FOR GOING UP HERE
        
    LEFT:
        ; YOUR CODE FOR GOING LEFT HERE
        
    RIGHT:
        MOV BX,01DEH
        MOV SI,01DCH
        MOV AX,0000H
        MOV AL,[BX]
        PUSH AX
        MOV CX,79

        AGAIN:
            MOV AL,[SI]
            MOV BYTE PTR[BX],AL
            SUB BX,2
            SUB SI,2
            LOOP AGAIN

        POP AX
        MOV [BX],AL
        JMP HULAT

    MOV AH,4CH
    INT 21H
MAIN ENDP
END MAIN

[dargueta]

Cheap shot, using your sig to post links...

EDIT: This no longer makes any sense because the spam post before me was removed.