[This is a repost because classiccmp ignored it the first time
around. I tries cc to cctalk just to test. And copy to
Jay West to be sure he gets an exact copy of the message I'm
sending.]
Hi,
in my VAX 11/780 I have the PDP-11/03 alias KC780. And it has
the following memory board right now:
M7944 MSV11-B Q 4-Kword 16-bit MOS RAM (external refresh)
But, since I'm planning to upgrade to an 11/785 I need additional
RAM. When it showed up on ePay I buyed a
M8044-DA MSV11-DD Q 32-Kword 16-bit MOS RAM
but the boot program will not load with this. Why would that be?
From the error I got it appeared as if may be there is just some
jumpering to do, but I have no clue as to where and what.
Looking at the UNIBUS/Q bus field guide beginning from M7944
and then scanning forward to the next MSV11 I find:
M7955-AD MSV11-CD Q 16-Kword 16-bit MOS RAM with on-board refresh
and then the family of M8044s
M8044-AA MSV11-DA Q 4-Kword 16-bit MOS RAM
M8044-AA (Also M8044-AB, -AC, -AD)
M8044-AA Refs: EK-MSVI1-OP, MP-00566
M8044-BA MSV11-DB Q 8-Kword 16-bit MOS RAM
M8044-BA (Also M8044-BB, -BC, -BD)
M8044-BA Refs: EK-MSVI1-OP, MP-00566
M8044-CA MSV11-DC Q 16-Kword 16-bit MOS RAM
M8044-CA (Also M8044-CB, -CC, -CD, -CE, -CF, -CH, -CL, -CM)
M8044-CA Refs: EK-MSVI1-OP, MP-00566
M8044-DA MSV11-DD Q 32-Kword 16-bit MOS RAM
M8044-DA (Also M8044-DB, -DC, -DD, -DE, -DF, -DH, -DL, -DM)
M8044-DA Refs: EK-MSVI1-OP, MP-00566
Does that mean that I should have the M7955-AD RAM instead?
This is confusing. And I'm not even asking for Q22 bus or PMI
memory stuff. What's the thing I'm missing?
thanks,
-Gunther
--
Gunther Schadow, M.D., Ph.D. gschadow_at_regenstrief.org
Medical Information Scientist Regenstrief Institute for Health Care
Adjunct Assistant Professor Indiana University School of Medicine
tel:1(317)630-7960 http://aurora.regenstrief.org
--
Gunther Schadow, M.D., Ph.D. gschadow_at_regenstrief.org
Medical Information Scientist Regenstrief Institute for Health Care
Adjunct Assistant Professor Indiana University School of Medicine
tel:1(317)630-7960 http://aurora.regenstrief.org
Received on Wed May 22 2002 - 17:05:48 BST