Re: A83: inversing the screen

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Re: A83: inversing the screen

A bit faster and smaller, and actually increments hl :P

invertScreen:
 ld hl,plotsscreen
 ld bc,3
invertLoop:
 ld a,(hl)
 cpl
 ld (hl),a
 inc hl
 djnz invertLoop
 dec c
 jr nz,invertLoop
 ret

In a message dated 2/18/01 2:01:30 PM Eastern Standard Time,
gte172i@prism.gatech.edu writes:


invertScreen:
 ld hl,plotsscreen
 ld bc,767
invertLoop:
 ld a,255
 xor (hl)
 ld (hl),a
 dec c
 jr nz,invertLoop
 djnz invertLoop
 ret


----
Jonah Cohen
<ComAsYuAre@aol.com>
http://jonah.ticalc.org
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