Thanks all,
Working fine now. I downloaded the CPM files from the website and simply copied the contents of the ZIP to the SDcard and then booted the Z80MC with the SIO board but not the FP. Some activity and? then hey presto CPM prompt.?
Works fine. Bit slower than I recall my old DEC Robin, but fine. Will have some fun putting Small C and Pascal on to the card.?
I've got plans for a Z80 PIO and CTC on my expansion board.
Meant to mention that I reversed the pins and sockets on the boards, so that I could plug directly into the CPU board with single core bare wires or male pin back to back breadboard wires, rather than having to use DIP sockets. I also found some 20 way versions of the white connectors from EBay and used those with one 10 way supplied to make the inter board connectors.?
Here's a photo of the completed boards.
Best Regards
Pau l
Paul Bigwood
