Datanumerics DL8A is here! Have a peek @ ... - test-drb@ccmp.vtda.org

4 Mar 1998

...
   Eproms or
PROMS?  They're marked C1702A 
The first commercial EPROM's.  256 * 8.  Very likely suffering
from some form of bit rot...  If
they don't have opaque stickers over the quartz windows. put stickers on *right
...
 now*! 

OK, they already had stickers on them.  I guess I should get these copied.

...
 Looking at the picture, there are 8 EPROM sockets with
only 4 of them
filled.  Right?  And what's the part number on the 40-pin DIP near
where the power harness is attached?  It looks a bit incongruous compared
to the other ceramic packages on the board.  Are those 10-turn
trimpots to the left of that 40-pin DIP? 

Yes, 8 sockets... 4 filled.
The 40 pin DIP at the front is AY-5-1013 / 7502

What's a trimpot?!!  I can guess.
They're marked Helitrim Cw12 and have a tiny screw at the top.

...
 Where do the three ribbon cables from the CPU board
going to?  I assume at
least one goes to the front panel - I'd guess the middle one. 

The cables go to, from left to right...

1) a male 25 pin connector on the back of the chassis
2) to a board mounted behind the control panel - full of interesting small
white chips labeled Beckman
3) This is a bit tricky;  a bit of this one goes to the control panel, and
another bit of it to a connector on the back (25 pin) with a sticker "TTY"
beneath it.
4) a female 25 pin connector just above the male one

Datanumerics DL8A can be seen at
http://www.comcen.com.au/~adavie/weird/datanumerics.html

Cheers
A