10 Aug
1998
10 Aug
'98
2:20 p.m.
Please pardon if this has already been answered... I've been away for
a week at the Worldcon (world science fiction convention)
I have a really compact "PDP-11/23S" chassis
that has an 18-bit Q-Bus
backplane (4xQuad) in it. Although the circuitry for the Q-Bus is on
traces of a PC card, there are also wirewrap pins extending out from
the backplane. Am I naive to assume that I can convert this to a
22-bit Q-Bus by wirewrapping four or so lines? Any pointers on how to
do this or on technique?
Not naive at all... I've done it on at least one of my H9270 backplanes
at home... I know of many others who have as well. If I remember
correctly, you need to buss the BC-BF lines (and for Q-Q backplanes,
DC-DF), but I would have to verify this...
Megan Gentry
Former RT-11 Developer
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| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry zk3.dec.com |
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