Search found 8 matches
- Wed Dec 13, 2017 8:37 am
- Forum: Programming
- Topic: Music engine with PWP waves
- Replies: 4
- Views: 2224
Re: Music engine with PWP waves
Hello the tup program runs only on Vic20 unexpanded strange because music programs work usually with all ram expansions. Oh yeah! There's some weirdness with RAM expansions that I don't know about, I'll have to look into that stuff. Right now I'm building it for unexpanded, then once it's working t...
- Tue Dec 12, 2017 9:09 am
- Forum: Programming
- Topic: Music engine with PWP waves
- Replies: 4
- Views: 2224
Re: Music engine with PWP waves
I was messing around with this again, I tried it on my real VIC-20 (NTSC) and strangely was getting the same result. I noticed that if you swap out the middle channel for the high channel, the PWP wave works consistently...and if you swap it out for the low channel, it doesn't work at all. The way t...
- Mon Dec 11, 2017 8:55 am
- Forum: Programming
- Topic: Music engine with PWP waves
- Replies: 4
- Views: 2224
Music engine with PWP waves
Hello everyone! I'm trying to write a music engine for the VIC-20 and I have a few questions. I'm still pretty new to coding in assembly, though I've made something similar on the Atari 2600. What I have so far is a program that runs through all the notes in a note table. I'm trying to get those not...
- Tue Oct 02, 2012 12:50 pm
- Forum: Hardware and Tech
- Topic: Specific keys not working
- Replies: 9
- Views: 1603
- Tue Oct 02, 2012 11:23 am
- Forum: Hardware and Tech
- Topic: Specific keys not working
- Replies: 9
- Views: 1603
Did you disassemble the KB? It sounds like it could be a broken trace on the KB PCB. Hm...I did take it apart, but I didn't notice anything out of the ordinary. I suppose I'll re-disassemble the thing and see if anything's up. Actually, would a C64 keyboard work in the VIC-20? I have a few of those...
- Sun Sep 30, 2012 11:32 am
- Forum: Hardware and Tech
- Topic: Specific keys not working
- Replies: 9
- Views: 1603
This column also covers the '7' and '8' key - do they work? Looking at the schematics, that pin also doubles as the cassette write line - can you see if you can save programs on the cassette? 7 and 8 actually work. I don't have any cassette tapes lying around to test saving with, but I'll see if I ...
- Sun Sep 30, 2012 6:11 am
- Forum: Hardware and Tech
- Topic: Specific keys not working
- Replies: 9
- Views: 1603
- Sun Sep 30, 2012 12:03 am
- Forum: Hardware and Tech
- Topic: Specific keys not working
- Replies: 9
- Views: 1603
Specific keys not working
Hey guys, maybe you could help me out with this. So I hooked up my VIC-20 and noticed that certain keys weren't working: Y, U, G, H, V and B. I took the whole thing apart, scrubbed it down thoroughly and made it nice and clean and...those keys are still dead. I suspect I probably touched the joystic...