Search found 322 matches

by matsondawson
Mon Aug 22, 2016 12:58 am
Forum: Emulation and Cross Development
Topic: Clock Signal: a Vic-20 emulator for macOS and Linux
Replies: 64
Views: 34711

Re: A heavyweight Vic-20 emulator with twists

If you can read my code it may help. I read CSM and TAP file format and covert to pulse widths.
http://www.mdawson.net/vic20chrome/vic20/tapedrive.js
by matsondawson
Thu Jun 09, 2016 5:53 pm
Forum: Hardware and Tech
Topic: What 74ls series logic was around in '83
Replies: 3
Views: 880

What 74ls series logic was around in '83

I'm looking at building a cart using the following types of ic: 4k x 8 SRAM 74283 - 4-bit Binary Full Adder 74574 - Octal D-Type Edge-Triggered Flip-Flop with Three-State Output Were this around in 1983? And if so were they expensive? I'm trying to make something that would look like it came from th...
by matsondawson
Mon Apr 29, 2013 5:03 am
Forum: Programming
Topic: MINIGRAFIK batch processing suite
Replies: 55
Views: 49862

I wonder if given an unlimited size drive of some sort what sort of video you could get out of the vic20. Obviously it would be RAW, but what is the best resolution you could come up with? Or even with 24k of ram, maybe a looping animation.
by matsondawson
Tue Apr 02, 2013 1:07 am
Forum: Programming
Topic: 720p, 1080i and 1080p on the VIC
Replies: 2
Views: 1355

Wow! With a small modification I think it could go even higher.
by matsondawson
Fri Mar 15, 2013 3:39 pm
Forum: Emulation and Cross Development
Topic: Chrome plugin for Vic20Chrome and .prg links
Replies: 6
Views: 2959

I've just added zip file support. It searchs the zip for .prgs and gives the option to select which one you want if there is more than one. If your zip is not on denial or zimmers then you'll need to turn on the "All websites" option. I still have a TODO to add your own custom sites, as yo...
by matsondawson
Thu Mar 14, 2013 12:30 am
Forum: Emulation and Cross Development
Topic: Chrome plugin for Vic20Chrome and .prg links
Replies: 6
Views: 2959

Now has a nicer icon, and two different popups depending on whether loading from tape or prg
by matsondawson
Wed Mar 13, 2013 6:46 pm
Forum: Emulation and Cross Development
Topic: Chrome plugin for Vic20Chrome and .prg links
Replies: 6
Views: 2959

I've made an update: * To work around the chrome bug on caching * Support for csm.gz and tar.gz links auto playing in the emulator * Added .a0 support. * Ability to select the machine type(pal/ntsc) and memory requirements in a popup off the link. Further to do: * replace the [emulate] with a Vic20 ...
by matsondawson
Tue Mar 12, 2013 2:24 pm
Forum: Programming
Topic: Poxels splash screen + animation
Replies: 30
Views: 5998

Just for fun I modified Mike's program to make poxel animations. About 4fps are achievable. Here is a sample output: http://www.opbyte.it/vic20/megaman.prg 16k expansion needed (24 frames, about 800 bytes per frame) Cool, a bit of runlength compression on that with diffs between frames you could be...
by matsondawson
Mon Mar 11, 2013 4:27 am
Forum: Emulation and Cross Development
Topic: Chrome plugin for Vic20Chrome and .prg links
Replies: 6
Views: 2959

Chrome plugin for Vic20Chrome and .prg links

http://mdawson.net/files/Vic20Chrome%20Links%20Plugin.zip For those of you who'd like a Vic-20 emulator link to appear after the any link ending in ".prg" I have written the following plugin. Just download the and expand the zip, go to Chrome's Tools -> Extensions menu option and turn on ...
by matsondawson
Fri Mar 08, 2013 12:35 am
Forum: Games
Topic: [finished] Tetwels
Replies: 7
Views: 5835

by matsondawson
Thu Mar 07, 2013 2:32 am
Forum: General Topics
Topic: Auto add emulator links?
Replies: 4
Views: 1226

I love your 'Inline VIC20' javascript snippet that converts any PRG links on the current page, although I admit that doesn't get noticed by beginners. I wouldn't mind if the board changed my posts automatically. Ah yeh that's really old now, I doubt it runs much :) Maybe I could make a phpbb plugin...
by matsondawson
Wed Mar 06, 2013 2:52 pm
Forum: Games
Topic: [finished] Cento (simple board game)
Replies: 15
Views: 10258

pallas wrote:
matsondawson wrote:Obligatory emulator link :)
http://www.mdawson.net/vic20chrome/vic2 ... neType=pal
Thanks! Can I put this link in my vic-20 page?
Sure, anyone can put those links on thier pages as the source of the .prg is your original URL.
by matsondawson
Wed Mar 06, 2013 3:12 am
Forum: General Topics
Topic: Auto add emulator links?
Replies: 4
Views: 1226

Auto add emulator links?

Is it possible in phpbb to automatically generate an emulator link to my javascript emulator for any URL ending in .prg?
by matsondawson
Wed Mar 06, 2013 3:08 am
Forum: Games
Topic: Jewels 20
Replies: 4
Views: 2302