pdp11/84 PMI memory: What is the problem with Q bus?
jsw at ieee.org
Fri Apr 24 11:50:01 CDT 2020
Sorry about the uNOTE confusion... I was focused and just used the
reference from the OEM version. I was aware but had mentally excluded
the older Microcomputer Products Group/Components Group version.
If you look at the Memory Comparison table in this OEM uNOTE, it only
lists Block Mode for "JD/JE ONLY". Hence my comment about it not being
on the JB/JC.
On 4/24/20 11:23 AM, Noel Chiappa via cctalk wrote:
> > From: Jerry Weiss
> > uNOTE # 028 indicates that MSV-11 JB/JC (M8637-B/C) doesn't do block
> > mode.
> I went and looked at uNOTE #28, after I found it (it's not in the initial set
> of uNOTEs, but in the second set - the so-called 'OEM uNOTEs"; note that the
> numbers were re-used between the two sets, so there are _two different_ uNOTE
> I couldn't find anything there about the JB/JC not doing block mode? All it
> says is they "can not be used in a Q-BUS system due to gate array
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