Search found 1102 matches

by tokra
Sat Oct 14, 2023 9:21 am
Forum: Games
Topic: In the making: Arukanoido – an Arkanoid clone
Replies: 610
Views: 164034

Re: In the making: Arukanoido – an Arkanoid clone

You could do VIC-sound on one side of the tape and samples on the other. Not a big fan of the samples myself, it's nice that it works but the VIC-sounds are much clearer and otherwise just as good. Regarding expansions: Nowadays most expanders will provide +35K (Penultimate, FE3, MegaCart). So that ...
by tokra
Sat Oct 14, 2023 5:04 am
Forum: Games
Topic: In the making: Arukanoido – an Arkanoid clone
Replies: 610
Views: 164034

Re: In the making: Arukanoido – an Arkanoid clone

Not sure if requiring +37K is a good idea, I can only think UltiMem supporting this. I tried the 1388 demo in VICE with only +35K and it was still working as far as I can see. What is the 37K used for? ($9800-$9fff) If space is tight, I would propose two different versions for normal music and sampl...
by tokra
Wed Sep 13, 2023 10:02 am
Forum: Hardware and Tech
Topic: I/O0 and illegal opcodes
Replies: 9
Views: 3778

Re: I/O0 and illegal opcodes

I'd say if the illegal opcodes are used unintentionally and serve no true purpose (i.e. making code faster or more compact) they warrant a crack/hack to improve them. Otherwise I only know of VIC Doom that uses illegals, and Kweepa already regrets this since the effect seems minor. One of my graphic...
by tokra
Tue Sep 12, 2023 4:08 pm
Forum: Games
Topic: Super Monza Grand Prix
Replies: 24
Views: 7218

Re: Super Monza Grand Prix

Wow, this looks really polished now and the extra courses and pitstops are nice addons! If you can still add things (+35K instead of +32K for example) some "racing"-music at the menu / title display or sounds for the traffic lights at the beginning would be nice. While this is now a great ...
by tokra
Sun Sep 10, 2023 4:08 pm
Forum: Other Systems
Topic: New Release: PETSTRIP for PET/CBM 3032 and 4032
Replies: 5
Views: 3298

Re: New Release: PETSTRIP for PET/CBM 3032 and 4032

Thanks, surprisingly the general technique for this was already done in March 1980 and is even a testprog in the VICE-repo: https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/PET/hi-res/ You can read more about that in the original magazine on archive.org: https://archive.org/details/Cursor...
by tokra
Sun Sep 10, 2023 4:24 am
Forum: Other Systems
Topic: New Release: PETSTRIP for PET/CBM 3032 and 4032
Replies: 5
Views: 3298

Re: New Release: PETSTRIP for PET/CBM 3032 and 4032

Cheers, it is actually 88x200 updating 11 characters instead of just 10 per line.
by tokra
Sun Sep 10, 2023 3:05 am
Forum: Other Systems
Topic: New Release: PETSTRIP for PET/CBM 3032 and 4032
Replies: 5
Views: 3298

New Release: PETSTRIP for PET/CBM 3032 and 4032

screenshot.png Download: https://www.pouet.net/prod.php?which=95051 YouTube: https://www.youtube.com/watch?v=RxBvDF5CpSo Commodore PET entry for the Wild competition @Nordlicht 2023. This game uses a newly developed graphics-mode called PECBM11 which provides a resolution of 88x200 pseudo-hires pix...
by tokra
Wed Jun 14, 2023 3:05 am
Forum: General Topics
Topic: Jeff's VIC 20 Book
Replies: 268
Views: 33060

Re: Jeff's VIC 20 Book

Hmm, I checked the USPS-site and entered your dimensions. The the cheapest I could find was "First-Class Mail International" ($13.50 to Germany, $6.03 to Canada). https://www.usps.com/international/first-class-mail-international.htm You can try yourself here: https://postcalc.usps.com/ Val...
by tokra
Tue May 30, 2023 3:50 am
Forum: General Topics
Topic: Jeff's VIC 20 Book
Replies: 268
Views: 33060

Re: Jeff's VIC 20 Book

PROBLEM: 1. Lulu only offers the lowest print quality available for global distribution. 60lb. paper. Sigh. (I promised heavy stock.) 2. Lulu only offers one sided covers! I planned the book for my printer and designed a four side color cover. 3. Coil binding is not available for global distributio...
by tokra
Tue May 23, 2023 2:04 am
Forum: General Topics
Topic: Jeff's VIC 20 Book
Replies: 268
Views: 33060

Re: Jeff's VIC 20 Book

"Unintended" seems to be the genereal consensus nowadays. "Undocumented" makes it read as if they were intented but just not documented. The "No More Secrets"-PDF that is updated each year at Christmas also calls them "unintended" and this seems to be the go-t...
by tokra
Thu May 11, 2023 12:57 pm
Forum: Hardware and Tech
Topic: Mega-cart issues?
Replies: 13
Views: 2859

Re: Mega-cart issues?

It could always be a bad connection. That other carts work does not say much, since the MegaCart may well use different memory-areas and pins than the standard game-cartridge. Have you tried plugging the MegaCart in and out a few times (at least 5?). This may improve the connection. I know my MegaCa...
by tokra
Wed Apr 26, 2023 12:50 pm
Forum: Games
Topic: New Game: VICSTRIP
Replies: 15
Views: 5517

Re: New Game: VICSTRIP

Haha when the VIC took off its box, I was a little excited. I thought it might strip down to the circuitry. That actually was the first idea, however the converted images of the mainboard did not look that good, so I came up with the idea of the "recursive" final picture for the VIC from ...
by tokra
Wed Apr 19, 2023 3:30 am
Forum: Hardware and Tech
Topic: FPGA 6561 - PAL Questions
Replies: 25
Views: 4737

Re: FPGA 6561 - PAL Questions

Tokra, Mike - if I added Interlace to the PAL FPGA, do you think you'd be able to put together a demo that shows it off? Hehe, "able to" - yes, probably. Should not be much different than NTSC. However I am not really interested in doing so :mrgreen: Effectively this would only work on yo...
by tokra
Tue Apr 18, 2023 8:28 am
Forum: Programming
Topic: Porting CP/M to the VIC-20: memory map questions
Replies: 10
Views: 1063

Re: Porting CP/M to the VIC-20: memory map questions

With a 160x192 mode you can get 40x24 chars. This fits in the 4K-area from $1000-$1fff. Use chars 16 to 255 at $1000 and start the character-RAM at $1100. This has been the standard-setup and has been used by MINIGRAFIK i.e. Otherwise you are correct. You cannot get more than 24K contiguos RAM with ...
by tokra
Sat Apr 15, 2023 8:21 am
Forum: Programming
Topic: ** New Frontiers in VIC-Hires-Graphics, Part 18
Replies: 2
Views: 592

** New Frontiers in VIC-Hires-Graphics, Part 18

http://www.tokra.de/vic/hfli/hfli.png Download HFLI-mode (used in VICSTRIP ) A new graphics-mode for PAL combining high-resolution with BASIC-interoperability: 168x160 HFLI (8x2 colour-blocks and raster-splits for $900e and $900f every 2 lines) . Provided in the downloadable archive are a Slide Sho...