osiweb.org

Dave, A direct copy of the Apple II version interpreter might be possible if the memory map on the OSI systems allows for programs to run in the 0x0800 address space, and includes enough contiguous memory to load the static memory portion of the game file, the interpreter, a small buffer for the dyn...

Dave, While the 300 might be a bit too difficult without lots of additional circuitry, I think that the 400 series would be a fairly straightforward operation with a 6502 processor, although it would need ram added to the base 400, and some access to mass storage, such as the 400 series disk control...

Over the summer I worked on a smaller replica of the OSI-300 computer trainer. Using images provided by others, I was able to draw out the schematic, bread board it, and then have boards made. I have put details on my website, including the schematics. http://randomvariations.com/category/osi-300-tr...