1. Old 68000 system from CYB Systems--need info
I recently picked up a 68000-based computer at an auction, and am in
need of a little information on it. The only included docs were the set
of Unix manuals. It appears to be vintage 1983 or 1984.
It's a CYB Systems model MBb, uses a MultiBus backplane, has one
floppy drive, one Ampex PIXYS27 hard drive, and a nice power supply. :-)
The CPU board has 256KB of ram, was made by CYB, and has two sets of
EPROMs on it--one from CYB and one from Mitsubishi. On power-up, the
system gives the message:
Sun Network Monitor, Version 0.10 - 0x40000 bytes of memory
and a ">" prompt. (Yes, there's also a 4MW ram board.) A friend has
speculated that it "may be a Sun-2 in a funny box", which is why I've
crossposted to comp.sys.sun.misc.
What I don't know is how to get the thing to boot off the hard
drive..... I suspect that's what the Mitsubishi EPROMs will do, but
I'm unable to locate them after a few hours of poking around in the
memory space (it's been a *long* time since I've used a machine that
had a monitor; trying to figure that out as well).
If anyone has any ideas or can direct me to some info about the
box, I'd appreciate it; I'd like to have a 68K system to play with. I
do plan to try and write a little program I can stuff in via the monitor
that will check every 4KW looking for a jump instruction and try to
locate it that way; however, it's been years since I've done any
assembly work...should be fun re-learning, though.
Email would probably be best, unless someone wants to start a thread
about antique hardware.
"It was the schoolboy who said, `Faith is believing what you know ain't so'."
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