EZ80 processors are commonly available via the TI-84 Plus CE. It costs about the same as the MakerLisp CPU card, but you get a 16-bit 320x240 color screen and a

EZ80 processors are commonly available via the TI-84 Plus CE. It costs about the same as the MakerLisp CPU card, but you get a 16-bit 320x240 color screen and a Micro-USB port and a calculator keyboard. There is a freeware C compiler available that can run in Wine. It has character. An "int" data type is 24-bit, with sizeof(int) being 3. The obvious open source compiler would be SDCC, but it needs some work. None of the 24-bit stuff is supported, leaving you with access to less memory.