Noise generator implementation in VICE

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groepaz
Vic 20 Scientist
Posts: 1188
Joined: Wed Aug 25, 2010 5:30 pm

Re: Noise generator implementation in VICE

Post by groepaz »

added in r37020 - a new build should pop up here
I'm just a Software Guy who has no Idea how the Hardware works. Don't listen to me.
nippur72
de Lagash
Posts: 574
Joined: Thu Sep 07, 2006 8:35 am

Re: Noise generator implementation in VICE

Post by nippur72 »

thanks, I'm looking forward to test it when the new build will pop up. Are binaries generated automatically?
groepaz
Vic 20 Scientist
Posts: 1188
Joined: Wed Aug 25, 2010 5:30 pm

Re: Noise generator implementation in VICE

Post by groepaz »

I dont know, its some guy from lemon who makes those builds.
I'm just a Software Guy who has no Idea how the Hardware works. Don't listen to me.
groepaz
Vic 20 Scientist
Posts: 1188
Joined: Wed Aug 25, 2010 5:30 pm

Re: Noise generator implementation in VICE

Post by groepaz »

it has been updated now, try it :)
I'm just a Software Guy who has no Idea how the Hardware works. Don't listen to me.
nippur72
de Lagash
Posts: 574
Joined: Thu Sep 07, 2006 8:35 am

Re: Noise generator implementation in VICE

Post by nippur72 »

I tried it, and it works as expected, that is, emulation is not accurate yet.

The current status is:

- on the first run (after power on) it's the same as a real VIC-20

- all successive off/on of the noise voice (e.g. POKE 36877,0 and then POKE 36877,128+x) result in a change of the "timbre" that is different than the real VIC-20.

I am currently investigating this issue, I'm trying to recreate a JavaScript model so that I can debug more quickly respect than VICE or FPGA.
groepaz
Vic 20 Scientist
Posts: 1188
Joined: Wed Aug 25, 2010 5:30 pm

Re: Noise generator implementation in VICE

Post by groepaz »

ok. please update the ticket on sf when you found out anything new
I'm just a Software Guy who has no Idea how the Hardware works. Don't listen to me.
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