Wallflower ZX by The Rockonerz
; **** Wallflower ZX - TV Noise is dead - long live Wallflower ****
;
; (c) 2011-05-28 by The Rockonerz (sweet, zilogat0r, logout, dex, factor6)
;
; Inspired by C64 original by AteBit and Atari version by JAC!
; A contribution to the inoffical "23 bytes Friday at work demo" compo.
; This one has 12 (colour) and 15 (b/w) bytes code respectively.
; Actually 5 bytes less code than the Atari version.
; Slightly different Z80 code with no use of custom chipset makes it stereotypical,
; but good enough for stroboscope lovers :P
; version A (colour, 12 bytes)
org #af57
jp2 ld h,c
jp1 ld a,r
xor (hl)
ld (hl),a
dec hl
out (254),a
set 6,h
jr jp1
len equ $-jp2
; version B (b/w, 15 bytes)
org #afc8
jp2 ld h,#57
jp1 ld a,r
xor (hl)
ld (hl),a
dec hl
out (254),a
bit 6,h
jr nz,jp1
jr jp2
len equ $-jp2[ back to the prod ]