LZ: Re: Program problems
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> From: Frank <Jblaze77@msn.com>
>
> Here is that program revised... it still aint working... now it just
prints my
> exiting text then freezes
....
> nextkey:
> cp $01 ; down
> CALL_Z(down)
>
> cp $02 ; left?
> CALL_Z(left)
>
> cp $03 ; right
> CALL_Z(left)
>
> cp $37 ;exit
> JUMP_(exit)
This has to be conditional. So, change JUMP_(exit) to JUMP_Z(exit), which
will jump to exit only if key $37 (Exit) is pressed. Without the 'Z'
condition, it makes the jump no matter what.
....
> exit:
> ROM_CALL(CLEARLCD)
> ld hl,$1A1A
> ld ($8333), hl
> ld hl, (PROGRAM_ADDR)
> ld de,bye
> add hl,de
> ROM_CALL(D_ZM_STR)
> ret z
change this ret z to ret
You do not want a conditional ret, becaus you want to exit no mater what.
BUT, what i think you are trying to do, is wait for a key press, then exit,
right?
Well, do this instead:
exit:
ROM_CALL(CLEARLCD)
ld hl,$1A1A
ld ($8333), hl
ld hl, (PROGRAM_ADDR)
ld de,bye
add hl,de
ROM_CALL(D_ZM_STR)
exitloop: call GET_KEY
cp $37
ret z
jr exitloop
> bye:
> .db "BYE THANKS FOR TESTING",0 ; this is what prints and then
freezes
> .end
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