5 Feb
2006
5 Feb
'06
2:15 p.m.
From: "Brad Parker"
Turns out the RX02 emulator needs an M105 and M7821
single height UNIBUS
card to work.
Anyone have an extra M105 and M7821?
I have been looking at suitable driver chips for Unibus/Qbus with Richard,
and it looks like the SN75ALS057 is both suitable and readily available.
So, I drew up an M105 replacement (modern parts, same functionality) with
my CAD tools. If there is interest, I could make the drawings available,
and someone could use them for a one-off or a group PCB buy. (I'm not
that proud of the drawings themselves; they are kind of ugly, and I didn't
need them pretty enough to invest the time to redraw them. Hopefully they
are pretty close to electrically correct :-).)
Also, does any one have Schematics for the M105 and
M7821? I looked on
bitsavers and did not find anything.
The M105 schematic can be found in KI10_moduleSchems_V2_Oct74.pdf (page 23)
on bitsavers. (The M7820 is on page 168, but I didn't find the M7821.)
Vince