This is a hobby project and comes with no official support. The PCB schematic and board design files are offered 'as is' with no claims made about their fitness for any specific purpose.

The Multicomper motherboard is a simple platform for creating a 'Multicomp' computer based on the design work of Grant Searle - which can be found here:

http://zx80.netai.net/grant/Multicomp/index.html

The Multicomper holds all the components and connectors needed to create a Multicomp-based designs (Z80, 6809, 6502 etc.). The main part needed is a low-cost Cyclone II development board from your favourite auction site or other supplier - search for EP2C5T144C8N mini board, but do read the notes on the Github page below BEFORE ordering.

The Multicomper has the following additional features:

• A prototyping area.
• All spare FPGA pins are broken out to headers do you can use them for your own purposes.
• A ‘key’ (reset) button in parallel with the one on the FPGA board.
• An optional regulated 5V power circuit in case you need it.
• A micro-SD card slot.
• Two serial port headers (NB: 3.3V logic like all the I/O).
• VGA and PS/2 keyboard port.
• Composite video header.
• Second SPI port with separate CS header pin (link it to the FPGA pin of your choice).

FOR MORE DETAILS AND IMPORTANT CONSTRUCTION NOTES, SEE: https://github.com/linker3000/Multicomper