rzh@lll-lcc.UUCP (Roger Hanscom) (03/23/90)
Hi All --
Can anybody help me with a North* question?? I acquired a North* cpu
recently for a few bucks. I'd like to try it out, but have no dox.
The silk screen next to a 16-pin header says "POJ Address", which I
assume to be the power-on-jump vector. The header is wired like this:
+--------------------------+ /`
| /^\ | /
| o--o--o/ o \o o--o--o | /
| \___ \______ | | top right corner
| \ \ | | of card.
| o o o o o o o o |
* | |
+--------------------------+
* is marked pin 1. Where is this guy going to start up?? Why are there
three connections here?? The lower right two pins are ground, but pin #3
(?) doesn't appear to be +5. Is that 0D000h?? Anything "funny" about
the North* Z80A cpu that I should know?? It's marked "ZPB 023513" and
"ZPB-A ASSY 08014J S/N E-1-B"
roger rzh@lll-lcc.llnl.gov
Upstairs, Over a Vacant Lot, Inc.