Not that I'm aware of. I keep toying with the idea of building a batch, but I'm the wrong side of the Atlantic for you.
Search found 1341 matches
- Sat Jun 01, 2024 12:44 am
- Forum: Hardware and Tech
- Topic: Paged EEPROM
- Replies: 5
- Views: 153
- Sat Jun 01, 2024 12:16 am
- Forum: Hardware and Tech
- Topic: Victor Progress
- Replies: 4
- Views: 174
Re: Victor Progress
Glad to see you back. Will follow with interest.
- Fri May 31, 2024 11:38 pm
- Forum: Hardware and Tech
- Topic: Paged EEPROM
- Replies: 5
- Views: 153
Re: Paged EEPROM
The Final Expansion 3 card has a super ROM mode that does this.
Edit: I missed you want to bank $A000 and $B000 separately. The FE3 can't do this.
Edit: I missed you want to bank $A000 and $B000 separately. The FE3 can't do this.
- Tue May 28, 2024 5:58 am
- Forum: Programming
- Topic: Using interrupts in cartridge code
- Replies: 5
- Views: 296
Re: Using interrupts in cartridge code
Can you post your cart setup code?
- Sun May 19, 2024 9:03 am
- Forum: Hardware and Tech
- Topic: Audio to expansion port
- Replies: 5
- Views: 269
Re: Audio to expansion port
Hi. I have a VIC 20 CR board with a bodge wire on the back that appears to connect the audio pin of the VIC chip to pin Y on the expansion port via a 1K resistor. What does this actually do? Are there any cartidges that use this? Do you have a picture? Somewhere I've seen a schematic this this labe...
- Sat May 18, 2024 3:03 am
- Forum: Hardware and Tech
- Topic: What can prevent upper/lower case mode?
- Replies: 15
- Views: 753
Re: What can prevent upper/lower case mode?
I assume you've isolated the keyboard as a cause by trying to switch by software?
Code: Select all
?CHR$(14)
- Sat May 11, 2024 1:21 am
- Forum: Emulation and Cross Development
- Topic: TUNIX
- Replies: 25
- Views: 1856
Re: TUNIX
EDIT: If you clone https://github.com/SvenMichaelKlose/tunix.git you must NOT forget to do a "git submodules update --init --recursive" before doing anything else. Or just specify submodules need to be also cloned $ git clone --recurse-submodules https://github.com/SvenMichaelKlose/tunix....
- Sun Apr 28, 2024 11:49 am
- Forum: Programming
- Topic: 3D Stars
- Replies: 14
- Views: 2020
Re: 3D Stars
My suggestion would be to normalise this so it's integer-based. They're always faster than FP calculations. You could then use X% and Y%, and so forth, which I think speeds up the interpreter. You could also unroll the GOSUB calls, though that's a personal call. Integer arithmetic in CBM BASIC is s...
- Fri Apr 26, 2024 1:18 am
- Forum: Programming
- Topic: 3D Stars
- Replies: 14
- Views: 2020
Re: 3D Stars
Line number lookup in BASIC is a linear search from the start of the program. I'd suggest moving line 80 to the top of the program.
- Sat Apr 20, 2024 3:18 am
- Forum: Hardware and Tech
- Topic: Cart Expander connector spacing?
- Replies: 5
- Views: 2817
Re: Cart Expander connector spacing?
Revisiting my X-Pander 3 VIC design as I plan to get it up on Github and perhaps consider a re-run. It had bugs and I'd like to get them fixed before I put something into the wild. Is there a preferred port spacing? I've just checked the spacing in my Arfon expansion unit, the slots are 1in apart. ...
- Sat Apr 13, 2024 9:48 am
- Forum: Hardware and Tech
- Topic: Switchless JiffyDOS kernal switcher?
- Replies: 6
- Views: 2820
Re: Switchless JiffyDOS kernal switcher?
If it's this device
https://github.com/bwack/C64-Switchless ... 56-adapter
Then it uses the EXROM signal from the PLA. There's no equivalent of that on the VIC-20.
https://github.com/bwack/C64-Switchless ... 56-adapter
Then it uses the EXROM signal from the PLA. There's no equivalent of that on the VIC-20.
- Thu Apr 11, 2024 10:59 am
- Forum: Games
- Topic: AntiAir by inufuto
- Replies: 3
- Views: 1683
- Tue Apr 09, 2024 12:00 am
- Forum: Hardware and Tech
- Topic: Switchless JiffyDOS kernal switcher?
- Replies: 6
- Views: 2820
Re: Switchless JiffyDOS kernal switcher?
The RESTORE key handling in the C64 is quite different to the VIC, it goes through a 7474 flip-flop if I recall. Do you have a photo of how this is wired up in the C64?
- Sun Apr 07, 2024 12:45 am
- Forum: Collecting and History
- Topic: 2024 eBay pricing, What the actual?
- Replies: 4
- Views: 1605
Re: 2024 eBay pricing, What the actual?
Having only recently picked up a clean, tested, working Vic-20 for (I think) a very reasonable price with local pickup, I've just started checking UK eBay to see what other interesting items I can find to add to my latest nostalgic experience. What the heck, eBay? Why is everything Vic-20 related s...
- Fri Apr 05, 2024 11:13 am
- Forum: Hardware and Tech
- Topic: Late (not actually) to the FE3 party. Operational Queries.
- Replies: 19
- Views: 2488
Re: Late (not actually) to the FE3 party. Operational Queries.
I've yet to work out how to load the CRT image of wAx2, which resides in the source folder of the zip file I downloaded from GitHub. I recall there was a thread about the CRT format. I'll take a look and see if I can write a converter to generate a loader file from one. Edit: Full documentation is ...