A86: Sending user input to LCD
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A86: Sending user input to LCD
I'm slowly experimenting with TI-86 asm when I get bored, and I'm currently
trying to get the calculator to get the value of a key pressed by the User
and display it on the LCD, and be able to switch between numbers and
caps...any clues on how to pull this off?. I write a small proggy below that
I think does...soemthing..If anyone could help, it'd be...well, helpful, hehe
=)
I've fully commented it (as a newbie should)..
#include "asm86.h"
#include "ti86asm.inc"
.org _asm_exec_ram
mainProg:
call _clrLCD ; Clears LCD
ld a,0 ; load 0 into a
ld (_penRow),a ; load a into penRow
ld (_penCol),a ; load a into penCol
ld hl,l1 ; load label l1 into hl (a prompt)
call _vputs ; spit it onscreen
call _getkey ; get a keypress
cp kEnter ; is it the Enter key?
jp nz,progDis ; if not, goto label progDis
ret ; return
l1: .db "& ",0 ; prompt
progDis:
ld hl,blah ; just a test, load label 'blah' into hl
call _vputs ; spit the result onscreen
call _getkey ; get another keypress
cp kEnter ; is it the Enter key again?
jp z,quit ; if so, goto 'quit'
jp nz,progDis ; if not, loop back into progDis
ret ; return
blah: .dw _getkey,0 ; define word to be getkey value (doubt this is right,
help pls)
quit:
.end ; quit
ret ; return
.end ; quit the whole bloody program
END
Output looks like the following after several keypresses:
& uuuuuuuuuu
Each hit of a key that isn't the enter key prints a 'uu' after the last
one...mind boggling. The '&' is my Prompt...
`Kumba