C64/C128 CP/M Cartridge Interest?

On 12/24/2010 1:34 PM, Eric Smith wrote: Well, as noted in my previous email: * The ability to design a unit that could not only function as an add-on for the CBM line, but also function as a standalone unit. I don't want to leave off the Commodore interface, but I wasn't thinking it would be that intrusive. In my mind, Commodore compatibility would only require the inclusion of the CBM expansion port (from an external point of view). The CPLD/FPGA that would handle gluing things together would be there regardless of standalone or tethered, and the ROM would be there anyway to hold a standalone BDOS (I think that's the name). That's why I suggested a dual purpose board. I thought a USB connector would handle external interfacing well (external drive, RS232 connection for terminal, or KB and maybe there's a USB video option, dunno). Since a CBM cartridge is 3" by 2.5", I thought non CBM folks on this list might be interested in a 6 sq in CP/M machine, and the 22/44 pin connector on the edge of the board could be repurposed as a interface of sorts, or I could possibly put a .050" pitch 50/100 connector on the other end of the board, for a true S100 bus interface, though that's a bit above my knowledge level at this time. Jim -- Jim Brain, Brain Innovations brain at jbrain.com www.jbrain.com www.jbrain.net (eStore)