Search found 305 matches

by Kananga
Sun Jan 15, 2012 4:51 am
Forum: Programming
Topic: Sid Vicious - VIC 20 SID emulation
Replies: 65
Views: 32190

It's rather massively self modifying really Hold that thought. ;) Just looking quickly, looks like you can save 3 bytes on the ;- oscillator switch o1wav_: jmp o1off since this is always preceded by the and #$1f which will set N appropriately, so this could be changed to: ;- oscillator switch o1wav...
by Kananga
Sun Jan 15, 2012 4:39 am
Forum: Programming
Topic: Sid Vicious - VIC 20 SID emulation
Replies: 65
Views: 32190

Kweepa wrote:Which would save 14 more bytes.
And used 12 additional cycles for an NMI routine that is called every 177 cycles.
by Kananga
Fri Jan 13, 2012 1:44 pm
Forum: Programming
Topic: Sid Vicious - VIC 20 SID emulation
Replies: 65
Views: 32190

The Martin Galway Parallax uses 30 ZP locations, but only 24 are free. Not easy to resolve that clash , at least not without recompiling the SID. Mike said earlier that 32 locations ($30-$4F) are free...? Not in the version I got and ZP area should be almost identical to the original (+ two bytes a...
by Kananga
Thu Jan 12, 2012 12:33 pm
Forum: Collecting and History
Topic: Bomber Word discovered!
Replies: 74
Views: 31583

Since Mike did not reply I will give it a try. I'm near the end of the listing, and I make a typo. I reach for DEL but accidentally hit Restore instead. And the game boots up. WTF?! :shock: :lol: :twisted: Not unusual for a BLK5 cartridge. In BLK5 with autostart signature you hook into reset & N...
by Kananga
Wed Jan 11, 2012 1:26 pm
Forum: Programming
Topic: Sid Vicious - VIC 20 SID emulation
Replies: 65
Views: 32190

I quick-checked the PSID of Parallax, and it is located between $A400...$BFFF, i.e. BLK5 - and no relocation necessary. That's the good thing. There are clashes in the ZP. Which means, it'll take a little more time. Bad news: The Martin Galway Parallax uses 30 ZP locations, but only 24 are free. No...
by Kananga
Wed Jan 11, 2012 3:57 am
Forum: Programming
Topic: Sid Vicious - VIC 20 SID emulation
Replies: 65
Views: 32190

Would be interested in taking a look and seeing if there's anything that can be done to speed up and/or improve the emulation a bit.. Was on my list of things to do, which is ever growing :) Unfortunately, the original source code apparently disappeared from the net. I will release a version with &...
by Kananga
Tue Jan 10, 2012 3:35 am
Forum: Emulation and Cross Development
Topic: WIP: Vicious SID Converter
Replies: 22
Views: 12549

Boray wrote:I made a youtube video of Cybernoid 2:
http://www.youtube.com/watch?v=YNgWU99iVIE

I hope you approve?
Nice video! Not much happening on the screen though... :P
by Kananga
Tue Jan 10, 2012 3:29 am
Forum: Emulation and Cross Development
Topic: WIP: Vicious SID Converter
Replies: 22
Views: 12549

Splash screens with Mini/maxigrafik display and SID-like music would be another step up for our VIC :D . Splash screen with Minigrafik is no problem and I already combined the cybernoid2 SID with one of Mike's pictures for a demo on our last C= meeting in Graz. The converter takes a prg with the SI...
by Kananga
Mon Jan 09, 2012 3:36 pm
Forum: Announcement Board
Topic: VIC-20 Software Releases of 2012
Replies: 18
Views: 39647

Re: VIC-20 Software Releases of 2012

Name: Vicious SID Pack 1
Editor: Kananga
Released: January 9, 2012
Requirements: VIC-20 (8k memory expansion required)
Description: A collection of SIDs converted for the Vic-20.

Download: http://vic20emu.googlecode.com/files/VicSidPack1.zip

You can discuss the SID Pack here.
by Kananga
Mon Jan 09, 2012 3:33 pm
Forum: Emulation and Cross Development
Topic: WIP: Vicious SID Converter
Replies: 22
Views: 12549

WIP: Vicious SID Converter

After having ported Aleksi Eeben's SID Emu to ca65 I decided that we need more SIDs to play than just Zoids, Upside-Down, and Cybernoid-II (Although they are great!). So I started to write a SID converter and the first result is a small selection of SIDs converted for the Vic-20+8K. Not all of them ...
by Kananga
Sun Dec 18, 2011 3:06 pm
Forum: General Topics
Topic: Why did everything but MSDOS die back around 1992?
Replies: 9
Views: 1802

RJBowman wrote:...and they set about to first kill OS/2 Warp...
Actuall OS/2 was killed by IBM. First they spent a lot of money on developing and advertising warp 3, then they didn't sell it. Obviously IBM could afford to lose money.
by Kananga
Sun Dec 18, 2011 3:03 pm
Forum: General Topics
Topic: Scene Demos and uIEC devices
Replies: 13
Views: 2747

Re: Scene Demos and uIEC devices

Yet, back then, far more people had ram expansions on the VIC than 1541 drives... complete nonsense. Just to add one more opinion: I also never had a disk drive back then, but of course 8K (first one was quite expensive) and 16K switchable later. So for true VIC-20 experience don't use a disk drive...
by Kananga
Sun Dec 18, 2011 2:53 pm
Forum: Other Systems
Topic: Not quite... The end of the ROM based PLA for the 64
Replies: 344
Views: 104596

eslapion wrote:I guess they're too busy chatting with the psychiatrist and discussing the change in medication.
Actually I wouldn't mind discussing their medication with some of them. Of course I am not a psychiatrist. I could read answers off Eliza though.
by Kananga
Sat Dec 10, 2011 2:57 pm
Forum: General Topics
Topic: CommodoreServer.com, V-1541, Comet64 Internet Modem
Replies: 6
Views: 3246

BTW, there is another Internet-modem out now, also implementing a cloud-storage protocol: Flyer
It is a custom-made IEC device with user-controllable tcp-connections and http-requests and not just a plain serial-to-tcp device like the V-1541.
(Wasn't it mentioned in another thread?)
by Kananga
Thu Dec 01, 2011 9:50 am
Forum: Programming
Topic: Poxels
Replies: 28
Views: 6893

Nice, it reminds me of the ZX-81 "graphics" mode. ;)