22 May
1997
22 May
'97
11:25 a.m.
namely
1702s and 2532s, GET THEM. Today they are quite rare, tommorrow
Don't forget the 2708 and the 3-rail 2716 (Texas Instruments). My 1702A programmer is a unit based on a design from a
mid-70's
_Popular Electronics_ article. Toggle the addresses and data in
I found the articles on the PE 'CHAMP' (the first UK computer project) the
other day. One of the peripherals was the CHAMP-PROG - a 1702 programmer.
There's no hope of building it today (the whole thing is based round the
Intel 4040 and support devices), but I guess you could modify the design
if you were desparate.
on the front panel, hit a button, and a series of
RC-timed one shot's
apply the thoroughly bizarre sequence of programming voltages.
Yes, the programming algorithm is somewhat strange....
--
-tony
ard12(a)eng.cam.ac.uk
The gates in my computer are AND,OR and NOT, not Bill