27 Jan
2015
27 Jan
'15
6:03 p.m.
From: Johnny Billquist
Is noone paying attention to the fact (and my previous
comment) about
using 0 for CSR and vector???
Err, no. :-)
But seriously, I'm a bit boggled that a diagnostic program would _not_ have
as default the 'standard' vector/address. So I'm kind of assuming that the
0's are somehow bug results.
From: Jacob Ritorto
I grabbed a set of pdp11/34a boards ... Can I plug
them straight into
this blackplane that's currently housing my misbehaving 11/34?
Yes, if the backplane is some flavour of DD11-P (I don't know of any
backplane that supports the 11/34 but not the 11/34A, but I only have direct
confirmatory documentation on the DD11-P, and it supports both).
My vague recollection is that one can use _either_ the M7265/M7266 (but as
paired set) _or_ the M8265/M8266 set, but you can't mix and match them. But
don't depend on that (I'm too tired to dig into this tonight, I'll do so
tomorrow).
Backplane markings are very faded but seem to say
dd11-pk.
Yeah, that's the 11/34 backplane (actually, the DD11-P part - the -PK is the
version with the wire harness to work in a BA11-L or BA11-K; the -PF is for
the BA11-F or BA11-P).
Noel