28 Nov
2016
28 Nov
'16
7:31 a.m.
On Mon, Nov 28, 2016 at 03:14:57PM +0000, Maciej W. Rozycki wrote:
FYI, the VAX 4000-100/105/106 (KA52/KA54/KA54) systems have no backplane
of any kind and do not use Q-bus internally, except for the CQBIC (CVAX to
Q22-Bus Interface Chip) ASIC directly bridging one of the NCA (NDAL to
CDAL Adapter, or the north bridge in modern speak) ASIC's CP peripheral
buses to a mainboard Q-bus connector further wired with an internal cable
assembly to the pair of external connectors mounted on the backside of the
enclosure.
Thanks for clearing it up. Uhm, stupid question perhaps. But what is the
CDAL, and what is it's role?
For the record they are DEC P/N BC04V-09 (17-02048-01), though the photos
with the only listing I could find indicate quite a sorry state of the
cables offered I'm afraid.
That looks very familiar... I need to go look in the box with assorted
DEC cables.
/P