MicroVAX help

From: Richard A. Cini, Jr. <rcini_at_classic.msn.com>
Date: Tue Sep 9 08:10:58 1997

On Mon, 8 Sep 1997 07:40:47, Tim Shoppa <shoppa_at_alph02.triumf.ca>
wrote:

>>Part of the confusion may have arisen because the Richard (the owner of
>>the Microvax I, if I follow the attributions correctly) didn't
>>post the full M-numbers of all the cards. It's possible that he
>>has a 4 MB memory card that is only half-populated; the alphabetic
>>suffix to the M-number determines how it was populated at the factory.

        I thought it odd that the M-number for the memory card is listed in some info
that I have as "1mb MOS memory card", but Ultrixboot reports 4mb of RAM. I
don't recall seeing a letter suffix, but frankly, I wouldn't have known to
look -- this is my first DEC system, so I'm not familiar with their numbering
conventions. I also haven't yet pulled the cards from the backplane in order
to inspect them. My time has been spent rebuilding the power cable and trying
to get the external RD52 to work.

        From "memory", here's the backplane configuration:

        Slot TOP BOTTOM function
        8 open open
           7 {M7954?} open buss extender
        6 M8639 {same} RQDX1 disk controller
           5 M7502 {M7948??} Ethernet / {slot filled}
        4 M3104 {same} serial EIA mux-8
        3 M7551 {same} memory
        2 M7135 {same} processor 1
        1 M7136 {same} processor 2

        I can't remember what's in the remainder of slot 5, but since the unit has
floppies, the M7948 is a guess. I'll take a better inventory tonight.

        More to come...


-------------------------------------------------
Rich Cini/WUGNET
 <rcini_at_msn.com>
 - ClubWin Charter Member (6)
 - MCP Windows 95/Netowrking
Received on Tue Sep 09 1997 - 08:10:58 BST