There was a professor at Purdue who had two 20-drawer card cabinets
full of 1620 software. I think his name was Maniotis. I think the
Computer History Museum in Mountain View has it now. Maybe it's online.
On Thu, 2021-08-26 at 22:07 -0400, Ray Jewhurst via cctalk wrote:
On Thu, Aug 26, 2021 at 9:46 PM Chuck Guzis via cctalk
cctalk at classiccmp.org> wrote:
On 8/26/21 5:14 PM, Ray Jewhurst via cctalk
Hello all,Long time lurker, extremely rare
poster, I was reading
the Wikipediaarticle on the IBM 1620 and became quite
intrigued. I know that there
simulator for it on SimH but I have never ran or
machines before. I have all the documentation
ibm1620.zip filefrom bitsavers but I am not sure what to do
next. I know I would like totry Monitor, Fortran-II and possibly
GOTRAN but I have so many questions.I read the SimH documentation
which gave me some understanding but I
know exactly how the card decks work, how to
install Monitor or
Monitor once it is installed since I know you
have to boot off a
final question is, is there an easy to use
card-driven machine to
cut myteeth on? Also, any anecdotes on any of the old IBM
computers would beboth welcome and greatly appreciated.
Cards are just ASCII lines separated by newlines>
For more information, see:
I have already read that document. The thing that stuck with me most
wasthe fact that you can not boot off the hard drive (or were they
alreadycalling them DASDs?)
It's been years since I used the SIMH 1620
simulator, so I can't
evenclaim to be remotely current. I used it to check out some
sample codeback then.
My reaction: It's just not the same. I guess you had to be there.
Did anyone manage to snag a copy of Monitor IID? Or is the only
extantversion Monitor I? The differences were significant.
I only saw Monitor I. Will it even run on a 1620-II?
Also, don't forget SPS!
included both standalone and in the Monitor I distro, so
Thank you. I will check it out starting tonight.
If you want to use a totally (i.e. no disk)
card-driven version of
the1620, I'd recommend that you start with simple machine
languageprograms. I (dimly) recall that using the card-only
FORTRAN compilerwas a bit of a chore: read pass 1, read your
program, while punching anintermediate deck, read pass 2 and the
intermediate deck, read thesubroutine library and wind up with an
I will try the card-driven version first I think as an intro to