11 Apr
2024
11 Apr
'24
4:52 a.m.
I was an operator (summer job and weekends during college), we had a bunch of model 30s,
each with at least 2 card readers and 2 printers. most work was BG or F1 running jcl
which read in a 1401 program from cards.
we also had one model 30 with only 32k memory, usually used for check sorting. when not,
it sat idle, except I was the only one who read the directions to use the switches and
could run TWO 1401 emulation jobs on it.
<pre>--Carey</pre>
On 04/10/2024 3:03 PM CDT Van Snyder via cctalk
<cctalk(a)classiccmp.org> wrote:
On Wed, 2024-04-10 at 03:45 -0500, CAREY SCHUG via cctalk wrote:
you could also use the console to run 1401
emulation without DOS (i
think 2 options, one loaded in card deck, then allowed typing in
config, otherwise just turn dials and store stuff into memory.
After loading the Compatibility Initialization Deck or CID, a 1401
program could be run from cards by putting 1402 into the IPA dials, or
from tape by putting 1729 into the IPA dials, and pushing IPL. The IPA
was, IIRC, the address in the microcode.