KA650 VAX memory error - test-drb@ccmp.vtda.org

2 Mar 2019

On Sat, Mar 2, 2019 at 3:16 PM Glen Slick via cctalk
<cctalk_at_classiccmp.org> wrote:
...
 On Sat, Mar 2, 2019 at 12:02 PM Joseph Zatarski via
cctalk
<cctalk at classiccmp.org 
<http://www.classiccmp.org/mailman/listinfo/cctalk>> wrote:
 //>>/On a somewhat related note, I don't
suppose anybody knows or has />>/documentation on the pinout of the C/D interconnect
on these RAM boards? />>/The pinout for the ribbon cable is in the manual, but the
C/D />>/interconnect doesn't seem to be documented in any of the manuals that
/>>/are online. /> 650QS Field Maintenance Print Set, MP-02538-01, Rev C1
http://www.bitsavers.org/pdf/dec/vax/650/MP02538_650QS_Sep88.pdf 
<http://www.bitsavers.org/pdf/dec/vax/650/MP02538_650QS_Sep88.pdf>

Page 65 of the PDF, KA650 Circuit Schematics Page 23 of 40
MA0 - MA9
CAS0 - CAS3
RAS0 - RAS3
WE
SE
XADDR20, XADDR21
+5
GND

Page 47 of the PDF, Page 5 of 40 is an overview block diagram of those
signals originating at the DC357 CMCTL Memory System Controller. 
OK, thanks, that's great. Now I won't have to bother tracing things out if I
decide to go that route. Didn't realize there was a printset for the KA650, but I
guess I didn't even bother to check.