10 Aug
2009
10 Aug
'09
2:12 a.m.
On 9 Aug 2009 at 20:38, dwight elvey wrote:
It is the one by Germain. Not as much meat as the
stuff
on Al's bitsavers. Still a fun find.
It's interesting that there were a number of books written for 1620
programming, probably because there were quite a number of them
installed in schools.
I still have fond memories of that machine--and still can remember a
fair number of the opcodes (that system was very friendly toward
programming in machine language--you could enter code right on the
console typewriter) IBM even produced coding forms for the "1620
Absolute Coding System"--the other side of the form, ISTR, was for
SPS. You had to be careful not to overwrite the addition tables in
memory or things would quickly get very strange.
--Chuck