I'm a long time small / embedded computer hobbyist.? Recently began to dig through my collection of Z80 junked boards...? Will be converting a few into small SBCs using the "reverse engineer / hack" method, but also wondered if there are ready-designed, small PCBs for purchase, making it easy to pull parts (usually socketed), to quickly create working SBCs?? I am familiar with Searle design (no digital i/o), RC2014 (not interested in another bus structure), Z50 (bus structure...).? Would like typically provision for: Z80 CPU, SIO, CTC, E(E)PROM (24 or 28 pin), SRAM (up to 32KB), some digital i/o; either large chips like 8255, or simple 8bit register chips.? All in DIP sizes.? Enough chip select for several devices...
Anyone know of any tested pcb designs, that could be easily and cheaply ordered in small quantity at one of the offshore pcb houses?? (I've used JLCPCB before; excellent results).
Thanks,
tom