Re: A83: sprites

To: assembly-83@lists.ticalc.org
Subject: Re: A83: sprites
From: "James Vernon" <jimbob_v@hotmail.com>
Date: Fri, 05 May 2000 14:35:18 EST
Reply-To: assembly-83@lists.ticalc.org


Try something like this:

  ld hl,0
MainLoop:
  push hl       ; Push hl onto the stack because _getkey probably
KeyLoop:        ; changes it
  call _getkey  ; Wait for a key press
  cp kClear
  jr z,Exit     ; Exit is Clear is pressed
  cp kEnter
  jr nz,KeyLoop ; If Enter isn't pressed, wait for another key press
  pop hl        ; Get HL again
  inc hl        ; Increment it
  call _disphl  ; Display it
  jr MainLoop   ; Loop again

Exit:
  pop hl          ; Clear stack
  ret             ; Finish


I don't see why that shouldn't work.

== Original Message ==
>how can i increment the number in hl by one each time the user presses 
>enter.
>i already have the getkey code ready, but every time i press enter, the
>number changes to 19015??
>


James Vernon
james@calc.org
jimbob_v@hotmail.com
http://tcpa.calc.org/members/james/

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