12 Jul
2012
12 Jul
'12
8:26 a.m.
Well, I found an 11/03 at a customer and he said 'take it if you want...'
which, of course I did. He said it was a spare bootsystem for their
(long gone) VAX 785.
It has a bit of an odd card in it, almost empty with 50 pin connectors
on it and just a few chips on it.
I guess this went into the VAX to boot/load the microcode?
Ed
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12 Jul
12 Jul
8:40 a.m.
On 7/12/12, E. Groenenberg <quapla at xs4all.nl> wrote:
Well, I found an 11/03 at a customer and he said 'take it if you want...'
which, of course I did. He said it was a spare bootsystem for their
(long gone) VAX 785.
Gotta love a customer like that!
It has a bit of an odd card in it, almost empty with
50 pin connectors
on it and just a few chips on it.
I guess this went into the VAX to boot/load the microcode?
The VAX would have had an interface board (CIB?) which connected to
this card, it's just an extension of the PDP's QBUS (the chips are
probably just some buffers/line drivers). The logic for the interface
was on the VAX card.
Camiel.
8:45 a.m.
The VAX would have had an interface board (CIB?) which
connected to
this card, it's just an extension of the PDP's QBUS (the chips are
probably just some buffers/line drivers). The logic for the interface
was on the VAX card.
A technical description of the CIB board is on bitsavers:
http://www.bitsavers.org/pdf/dec/vax/780/EK-KC780-TD-001_ConsoleIntfTechDes…
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