On 5/3/24 07:20, Ed (scskits) wrote:
If the connector is still available, it would not be difficult to make a 1MB or 8MB static RAM board.
I did one not too long ago for the Data I/O UNISITE that also uses the MC68000.
The original UNISITE board was DRAM with up to eight 9 bit modules.
With the static RAM, the parity was disabled.
Nice!
If that is in fact an HP-9000 DIO RAM board, they've already been cloned. A fellow over in .eu did the design, I had a small run of PCBs done and built a few, and eventually got it working. I had intended to do a production run and sell them, but there wasn't a lot of interest on the vinthpcom list, surprisingly, so there it has sat for the past few years.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
Dave McGuire