I agree with Allison, It's pretty easy to make a board. Another option might be to make a daughter card which not only adapts the 2732 (or bigger) to the 2708 socket, but also takes a couple of extra address lines and the select via taps to other locations on the board. I don't have the schematic for this particular board in front of me, however if it takes multiple 2708 EPROMs, the there likely is a decoder which has a select generated by the board address range, and the next few higher address lines to determine which EPROM device to enable. By ignoring the chip select at the 2708 socket, and taking it from the input to the decoder along with a couple of extra address lines, then you can fit a larger device on a small daughter board without having to hack the board (worst you will have to do is tack onto some signals). I have a couple of different 8080 monitors that might be of use to you. I have a <500 byte very basic monitor, which has the advantage that it requires NO RAM (not even for a stack) - it provides basic dump/edit memory, execute and loop read/write commands (handy for hardware debugging). I also have a 3.5K full 8080 debug monitor, which features memory dump/disassemble/edit/fill/copy, register dump/edit, In/Out, execute, single-step, breakpoints and a bunch of other goodies. I'll be happy to send them to you. I can also give you LOTS of other original 8080 CODE (Disk OS, BASIC, editor, assembler etc.) Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html