Lurch, have you seen the FPGA replay mobo? Its probably smaller than you think.
If you put it in an ATX case you'll have 90% empty space. :-)
Edit: (If you meant mini ITX then it will fit nicely on one side and leave about 9cm of space the other way. Dimensions are 17cm x 8cm x ~3.5 cm.)
I once had a thought about buying a broken A1200, rip out everything except the keyboard, mount the replay mobo + keyboard adapter and possibly other stuff supported (original floppy in theory). ;-)
Or a small custom case (retro-look) would be nice.
Last edited by eXeler0; 19 April 2015 at 12:25.