Previous message: Wire list for the RKV11-D Qbus RK05 controller backplane anywhere?

Jerry Weiss jsw at
Wed Feb 12 11:38:05 CST 2020

On 2/12/20 11:28 AM, 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
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 Alan Frisbie.


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