CommodoreZ
Experienced Member
Howdy folks, been working on a little project for the VIC users out there. Okay, mostly me, but I figure there's no reason not to share it.
I've lamented the lack of fast RS232 interfaces for the VIC-20, and wanted to make one for myself. I figured if I'm going to go to the trouble, I might as well add two of them to the same card.
It's just a pair of 6850's and some circuitry for decoding and baud rate generation. Since I don't like dealing with jumpers for baud rate selection, I figured I would make that software selectable with a multiplexer and a latch. This means you can change the baud rate on the fly from software.
You can find more information here:
https://www.commodorez.com/vicserial.html
I also put together a little demonstration.
I made two of them for myself, and they can be addressed to different I/O lines, meaning in theory you could have 4 RS232 ports -- 5 if you use the user port too.
Anyway, enjoy. If for some reason you decide to build one, I'd love to hear about how it turned out.
I've lamented the lack of fast RS232 interfaces for the VIC-20, and wanted to make one for myself. I figured if I'm going to go to the trouble, I might as well add two of them to the same card.
It's just a pair of 6850's and some circuitry for decoding and baud rate generation. Since I don't like dealing with jumpers for baud rate selection, I figured I would make that software selectable with a multiplexer and a latch. This means you can change the baud rate on the fly from software.
You can find more information here:
https://www.commodorez.com/vicserial.html
I also put together a little demonstration.
I made two of them for myself, and they can be addressed to different I/O lines, meaning in theory you could have 4 RS232 ports -- 5 if you use the user port too.
Anyway, enjoy. If for some reason you decide to build one, I'd love to hear about how it turned out.
