Programming Forums > Application Development > Assembly

alphonso · Dec 9th, 2005, 6:48 AM

Hi. I'm a newbie here

Anyways, I need help in this code in TASM or task assembler. The purpose is to make the LEDs (light emitting diodes) blink at an increasing manner. Here's the layout of the LEDs:

1 2 4 8 16 32 64 128
0 0 0 0 0 0 0 0

Basically, I already got the code for making all these LEDs blink at the same time for about 3 seconds, then off, then on, then off.

My problem is how to make them blink in an increasing manner: from LED 1, then LED 2, then LEDS 1 and 2, then LED 4, then LEDs 4 and 1 (the manner is that the LEDs light up from 1 to 255 so that by 254, all but LED 1 will light up and by 255, all LEDs light up) here's the code for all LEDs lighting up all at once, then off, then on again, then off:

H=hexa
B=binary

(Toggle Plain Text)

clrscr= main proc near
       mov ax,0600
       mov bx,0700
       mov cx,0000
       mov dx,184fH
       int 10



mov dx,0378H
mov al,11111111B
out dx,al
inc cx
cmp cx,0ffffH
jne a1
int 21H
mov cx,0



mov dx,0378H
mov al,00000000B
out dx,al
inc cx
cmp cx,0ffffH
jnc a2
int 21H
mov ex,0


mov dx,0378H
mov al,11111111B
out dx,al
inc cx
cmp ex,0ffffH
jnc a3
int21H
mov ex,0


mov dx,0378
mov al,00000000B
out dx,al
inc cx
cmp ex,0ffffH
jnc a4
int 21H
jmp clrscr



end program
mov ah,01
int 21H
mov ah,4cH
int 21H
main endp
end main

Could you guys help me crack the code for this one please? Thanks, God bless

Dec 9th, 2005, 6:48 AM	#1
alphonso Programmer Join Date: Dec 2005 Location: Philippines, where the seasons are: hot, and hotter Posts: 72 Rep Power: 3	Almost, but not quite there Hi. I'm a newbie here Anyways, I need help in this code in TASM or task assembler. The purpose is to make the LEDs (light emitting diodes) blink at an increasing manner. Here's the layout of the LEDs: 1 2 4 8 16 32 64 128 0 0 0 0 0 0 0 0 Basically, I already got the code for making all these LEDs blink at the same time for about 3 seconds, then off, then on, then off. My problem is how to make them blink in an increasing manner: from LED 1, then LED 2, then LEDS 1 and 2, then LED 4, then LEDs 4 and 1 (the manner is that the LEDs light up from 1 to 255 so that by 254, all but LED 1 will light up and by 255, all LEDs light up) here's the code for all LEDs lighting up all at once, then off, then on again, then off: H=hexa B=binary (Toggle Plain Text) clrscr= main proc near mov ax,0600 mov bx,0700 mov cx,0000 mov dx,184fH int 10 mov dx,0378H mov al,11111111B out dx,al inc cx cmp cx,0ffffH jne a1 int 21H mov cx,0 mov dx,0378H mov al,00000000B out dx,al inc cx cmp cx,0ffffH jnc a2 int 21H mov ex,0 mov dx,0378H mov al,11111111B out dx,al inc cx cmp ex,0ffffH jnc a3 int21H mov ex,0 mov dx,0378 mov al,00000000B out dx,al inc cx cmp ex,0ffffH jnc a4 int 21H jmp clrscr end program mov ah,01 int 21H mov ah,4cH int 21H main endp end main clrscr= main proc near mov ax,0600 mov bx,0700 mov cx,0000 mov dx,184fH int 10 mov dx,0378H mov al,11111111B out dx,al inc cx cmp cx,0ffffH jne a1 int 21H mov cx,0 mov dx,0378H mov al,00000000B out dx,al inc cx cmp cx,0ffffH jnc a2 int 21H mov ex,0 mov dx,0378H mov al,11111111B out dx,al inc cx cmp ex,0ffffH jnc a3 int21H mov ex,0 mov dx,0378 mov al,00000000B out dx,al inc cx cmp ex,0ffffH jnc a4 int 21H jmp clrscr end program mov ah,01 int 21H mov ah,4cH int 21H main endp end main Could you guys help me crack the code for this one please? Thanks, God bless Last edited by Mjordan2nd; Dec 9th, 2005 at 1:24 PM. Reason: Code Tags

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Programming Forums > Application Development > Assembly

Almost, but not quite there