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> DOS > key I/O.. |
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michalll 04 Feb 2008, 18:37
Wouldn't it be easier using ah=10 and ah=9?
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04 Feb 2008, 18:37 |
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abuashraf 05 Feb 2008, 00:42
I know that but I only want to use int 33,int 16h
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05 Feb 2008, 00:42 |
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edfed 05 Feb 2008, 00:49
so, to memorise a sequence, two solutions:
a simple buffer, null terminated, to build an asciiZ string, and print it via int21h read the values on the text screen and transfert copy them to another location , screen or else. need to read the video memory @ 0B8000h linear. |
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05 Feb 2008, 00:49 |
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abuashraf 05 Feb 2008, 01:06
My problem ,how to copy this chars to the buffer,and then after that
getting them one after another,and print them, would you please show me a simple code. |
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05 Feb 2008, 01:06 |
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edfed 05 Feb 2008, 01:30
Code:
org 100h
xor cx,cx
start:
mov si,buffer
xor ah,ah ;input from keyboard
int 16h
cmp al,0x0d ;is it enter
je exit ;yes get out
mov [si],al
inc si
cmp si,buffer+100h
je @f
dec si ; to force the string leng to 256 chars
@@:
call putc
jmp start ;repeat
exit:
mov di,(80*xx+yy)*2
mov si,buffer
call txt
int 20h
putc:
push ax cx dx
mov ah,2
mov dl,al
int 21h
pop dx cx ax
ret
txt:
mov ax,0b800h
mov es,ax
mov ah,71h ; blue text on grey
@@:
mov al,[si]
or al,al
je .end
inc si
mov [es:di],al
add di,2
jmp @b
.end:
ret
buffer rb 100h ;to memorise up to 256 chars
db 0 ; for asciiZ formating
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05 Feb 2008, 01:30 |
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Picnic 06 Feb 2008, 18:08
Hello abuashraf, these two links might help, it's about input and output string.
http://board.flatassembler.net/topic.php?t=316 http://board.flatassembler.net/topic.php?t=4338 Also see about INT 21h / AH=0Ah it's a fast way to input a string. |
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06 Feb 2008, 18:08 |
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