29 Dec
2004
29 Dec
'04
4:47 a.m.
Hi.
I have a quad Qbus board in front of me. It is labeld "System Industries
9901-6082-A". It has two 40 pin IDC connectors, lots of TTL, four
AMD2905, three EPROMs, the usual PALs, ...
This is some sort of disk controler according to google. What I didn't
find out: Is this the complete controler or is this only a part of a
controler? There is a "System Industries 9900". It is a separate 19"
rack box containing a SMD (?) controler. It is interfaced to SBI or
UniBus or ??? with a bus interface card and ribbon cables. Maybe the
card I have is the QBus interface card?
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
29 Dec
29 Dec
3:04 p.m.
On Wed, 29 Dec 2004 19:47:36 +0100, Jochen Kunz
<jkunz(a)unixag-kl.fh-kl.de> wrote:
Hi.
I have a quad Qbus board in front of me. It is labeld "System Industries
9901-6082-A". It has two 40 pin IDC connectors, lots of TTL, four
AMD2905, three EPROMs, the usual PALs, ...
Got a couple myself, but no docs...
This is some sort of disk controler according to
google. What I didn't
find out: Is this the complete controler or is this only a part of a
controler? There is a "System Industries 9900". It is a separate 19"
rack box containing a SMD (?) controler. It is interfaced to SBI or
UniBus or ??? with a bus interface card and ribbon cables. Maybe the
card I have is the QBus interface card?
AFAIK, yes... you have the Qbus interface card to an SI9900 box.
What you are missing is a 5.25" tall, 19" wide box with two types of
cards inside, one set talks to system cards like you have (I also have
one 11/750 MASSBUS card) over a pair of 40-pin ribbon cables, and the
other set talks to SMD disk drives over regular SMD cables.
At home, I have some SI docs, but not for the Qbus card. I got my
card from a former SI engineer who had a crate of stuff in his garage
from the old days. All of the docs I will have are
from the days when
we had an SI9900 at work with a 160MB Fuji and a Fuji Eagle
hooked up
to our (2MB) 11/750, so circa 1984.
As I now _have_ a Qbus card, I'd love to get docs for it, at the very
least, DIP switch settings.
-ethan
11:57 p.m.
On Thu, 30 Dec 2004 00:04:27 -0500
Ethan Dicks <ethan.dicks(a)gmail.com> wrote:
AFAIK, yes... you have the Qbus interface card to an
SI9900 box.
OK. This card is useless for me as I don't have the actual conroler.
I
am looking for a R[KMP] disk emulating UniBus controler for SMD disks.
(I have several SMD disks without UniBus controler and a dead RK07
drive...) Maybe I will give this card to a friend. He has a PDP-11/34
with a SI9900. Maybe he can use it with a QBus PDP-11 or a MicroVAX to
"warm up" his PDP-11/34.
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
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