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> Tutorials and Examples > jmp loop until int 16h 8086 |
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Picnic 06 Feb 2020, 08:26
Hi connor,
My 16-bit code is a bit rusty. However I wrote this for you. I've tried it on Emu8086 and Windows XP. It's a com file so it won't run on 64-bit Windows without DosBox. Code:
org 100h
_loop:
; check for a keystroke
mov ah,1
int 16h
jz _loop
; a keystroke is present
; remove it from the keyboard buffer
xor ah,ah
int 16h
; AH = BIOS scan code
; AL = ASCII character
; check for ESC
cmp al,27
jne _loop
ret
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06 Feb 2020, 08:26 |
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connor 07 Feb 2020, 04:59
;face palm
thank you what if i wanted to add other keys to do other stuff and what about placing text onto a specific location and what about boot straps, what about proctection and long mode and nine million and nine other basic things i cant find a straignt answer for _________________ cars tech weed bitches country & thug life |
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07 Feb 2020, 04:59 |
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Picnic 07 Feb 2020, 10:07
Quote: what if i wanted to add other keys to do other stuff A small extension to the code. Code:
org 100h
_loop:
; check for a keystroke
mov ah,1
int 16h
jz .C
; a keystroke is present
; remove it from the keyboard buffer
xor ah,ah
int 16h
; AH = BIOS scan code
; AL = ASCII character
; check for ESC
cmp al,27
je .E
; check for A,D,W,S
cmp al,'A'
je .A
cmp al,'D'
je .D
cmp al,'W'
je .W
cmp al,'S'
je .S
jmp .C
.A:
; do something
jmp .C
.D:
; do something
jmp .C
.W:
; do something
jmp .C
.S:
; do something
jmp .C
; code
.C:
; code
jmp _loop
.E:
ret
Quote: and what about placing text onto a specific location This code taken from the Emu8086 documentation. Remove 'offset' if you compile with fasm. Code:
org 100h
; INT 10h / AH = 2 - set cursor position.
; input:
; DH = row.
; DL = column.
; BH = page number (0..7).
mov dh, 10
mov dl, 20
mov bh, 0
mov ah, 2
int 10h
; INT 21h / AH=9 - output of a string at DS:DX. String must be terminated by '$'.
mov dx, offset msg
mov ah, 9
int 21h
ret
msg db "hello world $"
Hope this helped. |
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07 Feb 2020, 10:07 |
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connor 08 Feb 2020, 04:24
at least it sets me in the right direction
much better than anything else assembly i understand easy verilog and vhdl, what are they smoking with tat sheat _________________ cars tech weed bitches country & thug life |
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08 Feb 2020, 04:24 |
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connor 09 Feb 2020, 16:34
let me bug you one more time,
what about the PC speaker and the sound blaster input and out put? _________________ cars tech weed bitches country & thug life |
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09 Feb 2020, 16:34 |
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Picnic 10 Feb 2020, 08:16
Try searching the forum. A quick search for "PC SPEAKER" gave me some results. The same goes for sound blaster (i guess).
https://board.flatassembler.net/topic.php?t=2432 https://board.flatassembler.net/topic.php?t=14049 https://board.flatassembler.net/topic.php?t=15222 |
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10 Feb 2020, 08:16 |
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