20 Feb
2020
20 Feb
'20
7:29 a.m.
On Feb 17, 2020, at 5:30 PM, Al Kossow <aek(a)bitsavers.org> wrote:
I'm in the process of restoring/documenting the machine, and also helping a member
of the MAME team to emulate the system.
Thanks! I started on a ROMP emulator in Swift using only the docs and 6150 IPL ROM on
Bitsavers many months ago, then got sidetracked with work. Maybe I’ll pick that back up
again, especially if there’s more/better documentation available now.
One thing I found was that among the first few instructions in the IPL ROM, you
immediately hit undocumented bits. I’m pretty sure they’re for resetting the two different
floating-point accelerators.
-- Chris