Re: A86: 5MHz


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Re: A86: 5MHz




i ran this code and could see a few distinct bars
across the screen
and when you hold 1 key down the screen goes black
then fades to white from left to right
kinda wierd
but if you hold down 2 keys it goes back to full speed

	ld bc,10000
loop:
	push bc
	call SetBlack
	call SetBlack
	call SetWhite
	call SetWhite
	pop bc
	dec bc
	ld a,b
	or c
	jp nz,loop
	jp _clrScrn

SetBlack:
	ld hl,$fc00
	ld de,$fc01
	ld bc,$3ff
	ld (hl),$ff
	ldir
	ret
SetWhite:
	ld hl,$fc00
	ld de,$fc01
	ld bc,$3ff
	ld (hl),0
	ldir
	ret

> If you do that, you would expect a nice shade of
> gray. But what actually
> happens is that the screen turns white, and it
> actually seems to build up
> energy or something, because when you exit from a
> long loop of doing
> AABBAABB... you get a really weird plasma-style
> effect on your LCD =/
> 

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