9 Apr
2008
9 Apr
'08
11:13 a.m.
On 8 Apr 2008 at 17:19, Tim Riker wrote:
As Eric mentioned, Bitsavers has the 13037 documents, although they're a
little bit difficult to find. The Controller Installation and Service
Manual is <hp/disc/13037C.pdf>. This describes the MAC command set.
The 13175/8 Interface Kits manual is <hp/21xx/interfaces/13175D.pdf>. This
shows the CPU-to-controller cabling.
The 12745 HP-IB Controller to HP-IB Adapter Kit Service manual is
<hp/disc/12745-90911_MAC-HPIB_Sep83.pdf>. It also lists the cables used in
the HP-IB configuration.
The individual 79xx disc drive installation manuals illustrate the
controller-to-drive cabling. I don't think Bitsavers has any online, but
the HP Computer Museum does (e.g., 07906-90902, "7906 Disc Drive
Installation Manual").
There's also the "13037 Disc Controller Technical Information Package"
(13037-90902), that has schematics, controller microcode, detailed theory
of operation, etc. on both the controller and the 13175 interface. This is
<hp/disc/13037-90902_TechInfPk_Aug80.pdf>.
No, these
drives used the MAC command set.
Got a pointer to docs on that? HP-1000 w/13175/13178 <cable-a> 13075
<cable-b> 7905/06/20/25 yes?
Almost. The 1317x cards were daisy-chained together and connected to the
13037 controller. The 79xx disc drives used two cables: a command cable
(thick) and a data cable (thin). The command cables were daisy-chained
together and connected to the controller. The data cables went from each
drive to the controller individually.
What are cable-a and cable-b? dual 50 pin card edge on
both ends of both
cables?
The above documents have pictures, wiring, etc. of the cables involved.
The drive control cables were fairly involved. There was a multi-unit
cable from the controller to a terminator board mounted on a bracket on the
rack cabinet. From that, a ribbon cable connected to the drive, and (if
used) a second multi-unit cable went to the next terminator board, etc.
So now we have:
HP-1000 w/12821 <cable-c> 13075 w/12745 <cable-d> 7905/06/20/25
where cable-c is a 50-pin to gp-ib?
Yes.
and cable-d is as cable-b above?
Yes (actually, a pair of cables: control and data).
HP-1000 w/12821 <cable e> 7925H
so I presume cable-e is 50 pin card edge to GP-IB?
Yes.
You say the drives could be "connected
together". Is this just a normal
GP-IB bus? or are there still a unit number here?
The ICD (H) drives daisy-chained HP-IB connectors, and each appeared as a
separate address. The 13037 configurations, either 13175 or 12745, daisy-
chained the drives as mentioned above.
I forget which pdf I read that number in. I think it
was one of the
13037 documents. Can the 26xx terminals also speak GP-IB?
There was an HP-IB option for the 264x terminals, but I am unfamiliar with
its operation.
I'm confused. See previous "connected
together" comment.
If you're still confused after looking at the cabling diagrams in the PDFa,
please ask again. ;-)
-- Dave