On 2/26/2023 1:15 AM, jos via cctalk wrote:
On 25.02.23 18:52, silvercreekvalley--- via cctalk wrote:
Thanks Vince - I knew about the RX emulators but not the serial disk -
that sounds interesting. Is there any documentation on that - I had a
look at the GitHub but seemed a bit sparse.
I can imagine the FFP8/A is hard to find and replicate. I can probably
use emulation - but its nice to check with real hardware.
This is probably not the right place to link the youtube video of the
guy that destroyed a FPP8/A set to recover the gold on the PCB-fingers...
I do have a rather complete 8/A, with RL01 ad FPP8/A. Alas no sockets
inside so the PROMs cannot easily be read out.
Too bad we probably can't get the damaged board to image the PROMS and
programmable parts.
ISTR seeing some of that information in the drawings.
I tried to reverse engineer the 128K memory controller, but ran into
issues where I could not be certain what should be in the ROMs and other
programmable parts. (It is not just a bigger memory; there's remapping
for DMA, remapping for user mode, and all kinds of other stuff in there.)
Vince
