Denial

Btw anybody interested in a Collab for Evoke demo party?

Still need a proper demo system as I still got some demo FX for theVIC20 but as with Gnork I struggled with those double irqs

Hey... Unfortunately I was just 1 day at revision.

I have seen that VIC20 on the table. What hardware was attached to it?

And on the monitor I have seen Zak?

And which demo use that bus trick?

Sorry over read your comment with can't restart...

So no VIC 1 tricks? Like the scanline Res vscrolling?

interesting... what if I do racing the beam and set $9001 later so it compares more often to $9004? just thinking out loud at lunch break. I was always wondering how 4mat did stuff (like in C64 terms) FLD like tricks in his VIC20 intros. https://youtu.be/McNLJIIEs-A?t=38 as an example but did not lo...

Just wonder if 9001 can be retriggered across the screen? I did 9000 on rasterline basis but that was an easy one...

As written... I am using it in demo so just IRQ Kernel used. Thanks will look into the other thread.

coming from Atari 800 and C64 I am used to switch off OS completly and having the ZP "free".

on the VIC20 I can not do this but using the IRQs mainly so just to be sure. what are the ZPs which are really free?

CHIS shows in monitor

loop BIT $911f
BNE loop

in the track loader part...

ok... i kicked out everything from the loader part which has IRQ influence. lda #10 jsr vsync sei lda #$7f sta $911e sta $912e jsr $fdf9 ;reset i/o ;seems this is necessary --> $314/$315 is default lda #<22150 sta $9124 lda #>22150 sta $9125 lda #<$0114 sta $314 lda #>$0114 sta $315 cli lda #<$5a00 ...

Now as you mention OS space I am used to no OS in the way as switched off on C64/Atari800 anyway .

But good point to check.

Is there a vice version which has a history in debugger to have more clue?

So we can meet there

Tried that but when I call the rom routine the starting of next part was stopping. So could be something different there after the trackloader. Those 2 IRQs are not used for IO? As Atari guy the sound chip is envolved into IO that's why I am asking dumb questions.

i used those routines back 2018 in Gnork! demo and never run into that issue that it fcks up the trackloader...

.align $100 InterruptInit: ;save the registers ldx #31 @ lda $9110,x sta $b9e0,x dex bpl @- ; IF RESTOREDISABLE lda #%00000010 sta $911e ;No RestoreKey sta $911d ; ENDIF lda #$7f sta $912e sta $912d lda #%11100000 sta $912e lda #%01000000 sta $912b lda #<IRQServer sta $0314 lda #>IRQServer sta $031...