12 Feb
2020
12 Feb
'20
9:28 a.m.
From: Jay Jaeger
Yeah, info does seem to be scarce. Not even in my
LEVAX fiche set.
My fiche set has the Technical Manual, and also (in the wirelist
section) the wirelist.
Not sure how to get it to you, though. I stuck it in my industrial-grade
scanner at its highest resolution; no go. I suppose I could take photos
of it displayed on my fiche reader?
Or is there some device I can buy which is less than a zillion dollars which
can scan fiche? There are a number of things in my set (e.g. the BA11-N Tech
Manual) which aren't online, and would be useful to have.
That fourth card (M7268) is apparently a connector
card for the Q-Bus
and drive bus.
Yes, but actually there are 6 cards: the M7269 is a dual card which goes
into the QBUS backplane, and the M993-YA which goes into the first RK05,
to convert from the two flat cables which come from the M7268.
From: Al Kossow
Also, it is only 18 bits.
Actually, only 16-bit DMA addresses, I'm pretty sure.
Noel
12 Feb
12 Feb
9:37 a.m.
On Wed, Feb 12, 2020 at 12:28 PM Noel Chiappa via cctalk
<cctalk at classiccmp.org> wrote:
It is.
-ethan
My fiche set has the Technical Manual, and also (in
the wirelist
section) the wirelist.
Yes.
That fourth card (M7268) is apparently a
connector card for the Q-Bus
and drive bus.
Yes, but actually there are 6 cards: the M7269 is a dual card which goes
into the QBUS backplane, and the M993-YA which goes into the first RK05,
to convert from the two flat cables which come from the M7268. From: Al
Kossow
Also, it is only 18 bits.
Actually, only 16-bit DMA addresses, I'm pretty sure. 
9:38 a.m.
On 2/12/20 11:28 AM, Noel Chiappa via cctalk wrote:
That's what is documented in Micronote #5. There is a comment in the
15-Dec-1994 DECUServe Journal that says it can be modified for 18 bits
From: Jay
Jaeger
Yeah, info does seem to be scarce. Not even in
my LEVAX fiche set.
My fiche set has the Technical Manual, and also (in the wirelist
section) the wirelist.
Not sure how to get it to you, though. I stuck it in my industrial-grade
scanner at its highest resolution; no go. I suppose I could take photos
of it displayed on my fiche reader?
Or is there some device I can buy which is less than a zillion dollars which
can scan fiche? There are a number of things in my set (e.g. the BA11-N Tech
Manual) which aren't online, and would be useful to have.
That fourth card (M7268) is apparently a
connector card for the Q-Bus
and drive bus.
Yes, but actually there are 6 cards: the M7269 is a dual card which goes
into the QBUS backplane, and the M993-YA which goes into the first RK05,
to convert from the two flat cables which come from the M7268.
From: Al Kossow
Also, it is only 18 bits.
Actually, only 16-bit DMA addresses, I'm pretty sure.
Noel from Alan Frisbie.
??????????? Jerry
4:40 p.m.
On a related note, what kind of documentation is out there for the
various oddball QBus to Unibus converters? I have at least two of the
Plessy models that came from the USPS project in the 80's (they used
pdp11/23 cpus in a Q bus backplane next to a Unibus backplane that had
all the X.25 comm cards) but I haven't had a need to use them. I think
they were at least 18 bit cards.
What else was there?
On 2/12/2020 12:28 PM, Noel Chiappa via cctalk wrote:
From: Jay
Jaeger
Yeah, info does seem to be scarce. Not even in
my LEVAX fiche set.
My fiche set has the Technical Manual, and also (in the wirelist
section) the wirelist.
Not sure how to get it to you, though. I stuck it in my industrial-grade
scanner at its highest resolution; no go. I suppose I could take photos
of it displayed on my fiche reader?
Or is there some device I can buy which is less than a zillion dollars which
can scan fiche? There are a number of things in my set (e.g. the BA11-N Tech
Manual) which aren't online, and would be useful to have.
That fourth card (M7268) is apparently a
connector card for the Q-Bus
and drive bus.
Yes, but actually there are 6 cards: the M7269 is a dual card which goes
into the QBUS backplane, and the M993-YA which goes into the first RK05,
to convert from the two flat cables which come from the M7268.
From: Al Kossow
Also, it is only 18 bits.
Actually, only 16-bit DMA addresses, I'm pretty sure.
Noel
4:59 p.m.
New subject: Wire list for the RKV11-D Qbus RK05 controller backplane anywhere?
Noel said
Wow, that would be great. Would a camera with a Bowden cable trigger set up on a
tripod in a darkened room be sufficient for imaging the fiche reader screen? I know
it wouldn't be Bitsavers quality but any doc is better than no doc.
Also I'm ok with the RKV11 being 16 bit, my Qbus CPUs only extend to an LSI-11/2
and 11/03 board with 4KW anyway.
Steve.
From: Jay
Jaeger
Yeah, info does seem to be scarce. Not even in my LEVAX fiche set.
My fiche set has the Technical Manual, and also (in the wirelist
section) the wirelist.
Not sure how to get it to you, though. I stuck it in my industrial-grade
scanner at its highest resolution; no go. I suppose I could take photos
of it displayed on my fiche reader?
Or is there some device I can buy which is less than a zillion dollars which
can scan fiche? There are a number of things in my set (e.g. the BA11-N Tech
Manual) which aren't online, and would be useful to have.
That fourth card (M7268) is apparently a
connector card for the Q-Bus
and drive bus.
Yes, but actually there are 6 cards: the M7269 is a dual card which goes
into the QBUS backplane, and the M993-YA which goes into the first RK05,
to convert from the two flat cables which come from the M7268.
From: Al Kossow
Also, it is only 18 bits.
Actually, only 16-bit DMA addresses, I'm pretty sure.
Noel
1778
days inactive
1779
days old
4 comments
5 participants
participants (5)
-
cz＠alembic.crystel.com -
ethan.dicks＠gmail.com -
jnc＠mercury.lcs.mit.edu -
jsw＠ieee.org -
steven＠malikoff.com