Hi all
Oops that went off before I was finished with it.
I suspect that I can figure out from the pattern of I/O accesses
which devices are at which address in the memory map, at least if I
bring up an emulation in MAME. That should at least allow writing
new code for it, and _maybe_ even
Hi all
Chris gave me a copy of the boot ROM and I played around with it a bit.
I threw the 4KB of boot ROM in Ghidra and confirmed a couple things:
- At boot, ROM is mapped to 0, and then remapped either by a write
to the location or by a cycle counter: The initial stack pointer at
0x0 is
Hi Chris and all
- No video board, whether text or graphics
Since thereâs no video board in the system, and a couple of cables
internally that arenât attached to anything, I expect it was
removed by a previous caretaker. This is sad because without one
itâs unlikely to come up, not
I picked up this system from its previous caretaker yesterday, to hold onto for
a friend. I’ve also inventoried the major functional ICs and archived the
“IPL-M” ROMs.
Here’s what’s in the Eagle-32:
- Main Logic Board
- 8MHz 68000 CPU
- 2x D8255 programmable peripheral interface
- left
