23 Dec
2009
23 Dec
'09
3:08 p.m.
On Wed, Dec 23, 2009 at 5:35 PM, Roger Holmes
<roger.holmes at microspot.co.uk> wrote:
I wrote a similar program in 1979 to do a similar job
with an Apple ][ europlus (to a Bridgeport Series 1).
Oddly enough, one of my side projects is tracking down a problem with
the original controls for a Bridgeport Series 2. One of the control
cabinets got packed with sawdust from an adjacent woodshop, so it
appears to be power-supply related (all the motor driver and pre-amp
boards check out, but only X moves; Y and Z make noise but are
stationary).
I was really shocked (and pleased) to go through the manuals and find
that at the core of this, there's a genuine DEC quad-height LSI-11
(11/03) processor card.
-ethan