23 May
2019
23 May
'19
7:38 a.m.
Den tors 23 maj 2019 kl 14:14 skrev Noel Chiappa via cctalk <
cctalk at classiccmp.org>:
Not really unobtainium: https://www.ebay.com/itm/281679682476 and
https://www.ebay.com/itm/253305313497
These DC0xx chips can sometimes be found on Ebay under their Signetics name.
DC003 C2293N
DC004 C2301N
DC005 C2324N
DC006 C2345N
DC010 C2344N
From: Jon
Elson
Yes, this is most likely a bus timeout
The good news is that it looks like his CPU is 'mostly' working; and if
the NXM is due to a fault on the CPU (e.g. bad bus transceiver sending
the wrong address), that would be fixable (it uses 8641's).
If the fault is in the DLV11-E (and not just misconfiguration), depending
on
where the fault is, he might be out of luck with that card; it uses DC005's
for transceivers, which of course are unobtainium now. Still, QBUS serial
interfaces are not rare.
And overall, progress is being made! :-)
Noel
/Mattis