osiweb.org

The expansion connector is easy to adapt to 5V levels with a couple of bus chips, not a big deal at all. Some of the 6502 lines can be run on 5V now. I originally was going with the 40 pin socket connector but then people might not realize that the system is 3V and connect a 610 board to it and risk...

The issue I'm having is the 64 width is good on the display but the memory map doesn't like 64 across. What happens is the display puts a line of text half way across the screen, then the next line is at the left margin. As the page scrolls, it shifts the data in 32 character wide movements so what ...

The project page is up and final stages are underway for production. The first run will be limited to 20 units. The kit price will be $199 thanks to WASD working out a better price to make this happen. The final prototype is up for viewing and the color of the board will be blue. I chose blue becaus...

It's possible to do that. We've been considering a 2nd version without the keyboard but with a connector port and a PS/2 adapter. Since it is still early enough in the development I'll look into both options. The hard part on the C64 keyboard (or other brand like TI 99/4) would be the matrix would b...

The goal is $199 for the kit which is a very difficult task. I may just eat it and do the kits for this price just to make some boards. The expensive part is the keycaps at $60 set and the switches at around $35 set. The PCB is under $20 in quantity and the other parts are minimal. The USB connector...

I have been posted about this project in the past but I thought since I have now made a prototype PCB I would post a picture of it. This is my OSI 600 replica named the Superboard ///. It uses a WD65C02 running at 3.3V and 1MHz and a Parallax Propeller micro-controller for the video and ROM section....

Nothing new to report, the board is working, just figuring out configurations and odds and ends before I make a prototype PCB batch.

I've owned my Superboard II for a few years and I've wanted to recreate it. I'm in the process now and have a working wirewrap version. I can boot and run BASIC just fine, I still need to implement the serial port for file transfers. Maybe later I'll work on the disk controller interface. Are there ...