[comp.sys.nsc.32k] GPIB between two of {SYS-16, SYS-32}

aeusemrs@csuna.UUCP (News Manager) (08/06/88)

I have a SYS-16 [and a SYS-32, later model, same thing, almost]
with a GPIB bus on the back, you know the thing that can make
it boot off a vax.  We have source code [GENIX 4.1 stuff].  I
have been trying for the longest time to get the two machines to
talk with eachother.  All nastiness happens, ddt blows away the
kernel when single stepping a load to the second interrupt
register on the GPIB chip [yes, I know there are two, but only
one has two interrupt registers] with a sleep panic.  But it did
not do this until after I changed the other chip's spy address
to the next page past the first one.  I am trying to put one in
ton, the other in lon, [because the chipset documentation I
have says you must] with one of the SYS-[13][62] acting as bus
controller. [because I don't have a vax with a GPIB controller]
At other times, on the newer SYS-32, I receive a machine check
NMI external*4, which looks like an interrupt from the GPIB chip
but I tell the chip to disable ALL interrupts...

Now to the heart of the matter, does anyone have any software
that can be show to move at least one byte across the GPIB,
between two SYS-[13][62] in ANY manner whatsoever with no other
hardware involved? [of course you can have the cable :-)]

Failing this, I will post more details, and exhaustive
information here, in hopes someone can help me.

					Mike Stump
-- 
Mike Stump, Cal State Univ, Northridge Comp Sci Department
uucp: {sdcrdcf, hplabs, ttidca, psivax, csustan}!csun!csuna!aeusemrs