7 Aug
2008
7 Aug
'08
9:25 p.m.
On Thu, Aug 07, 2008 at 03:29:01PM -0700, Vincent Slyngstad wrote:
It is a little. The 8"x11" restriction is
really just to keep the
prototype cost low for a particular board shop. If that or the
10mil restriction were relaxed, things would get easier.
Gotcha.
Of course it would also be fairly easy to redo the
thing with
GALs instead of TTL, which should also make it easier to fit
things in, but would require me to program parts.
Sure. I myself have a couple of burners and more than a handful
of 16V8s and 22V10s, so _I_ wouldn't mind a GAL-inclusive design,
but there is something neat about an all-TTL design replacing
and upgrading a FLIP-CHIP disk - you can get a probe in there and
see *exactly* what's going on.
I forget... does a real RF08 have a KM11 port? I happen to
have a couple of as-yet-unassembled modern replicas, but I
got them to plug into my RK-11C and PDP-11/20 (and probably
an RX01 just to watch it blink), so they'll get use, but I
just don't remember about the RF08.
The RX8 will go in the middle of a bus, and even has a provision for a
G717 equivalent bus terminator, in the form of an optional SIL resistor
pack.
Thanks for the reminder - sounds like a very workable combination.
Oh... the RF08 is a databreak device - I think that would mean that
I'd need one more module for OMNIBUS testing, but I do have the
required M-series logic to fit that into the -8/L.
Real drivers, too. Of course, being known not to
work as yet,
I doubt anyone will be rushing out to build it :-(.
Right... I _am_ still interested in getting it working, but to be quite
honest, it'll be 6 months until I could even start to look at it - gotta
get home first.
-ethan
--
Ethan Dicks, A-333-S Current South Pole Weather at 8-Aug-2008 at 04:20 Z
South Pole Station
PSC 468 Box 400 Temp -50.4 F (-45.8 C) Windchill -88.3 F (-66.8 C)
APO AP 96598 Wind 17.5 kts Grid 13 Barometer 682.5 mb (10534 ft)
Ethan.Dicks at usap.gov http://penguincentral.com/penguincentral.html