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Re: IPS and Amateur Satellite Software



At least it could add. The IBM 1620 had no ALU and all math was done by
table lookup one digit at a time.

My first programming experience was with Fortran II on this machine.
Compilation was done in 64 passes and took 20 minutes no matter what length
the program was. This was much faster than the university computing center
which took 2 hours minimum to process your card deck on a 360.

73,

John
KD6OZH

----- Original Message -----
From: "Roy Welch" <rdwelch@swbell.net>
To: "Gregory Beat" <gregory.beat@home.com>
Cc: <amsat-bb@AMSAT.Org>
Sent: Sunday, 08 April 2001 03:51 UTC
Subject: Re: [amsat-bb] IPS and Amateur Satellite Software


> Anyone ever hear of Autocoder Assembly language on an IBM 1401?  No CRT,
no
> keyboard, and only tape or punched card input!  A four foot square box
with
> 8k core RAM expandable to 16k.  No multiply feature unless you paid $4k
> more.  Otherwise you wrote your own add and shift stuff to multiply.  My
> first experience was in 1963 with this thing.  We wrote 200k programs with
> tape overlay routines and extended memory out onto tape.  Some fun!
>
> Gregory Beat wrote:
> >
> > No, I still slash my zeroes, (and not the "ohs" which is another story)
> > great for the ham radio calls, but gets strange stares from our Java
> > programmers   :-)
> >
> > G
> >
> > > > Hmm, FORTRAN (which was also my first programming language ..
showing my
> > age
> > > > and academic background I'm afraid), that would explain much of my
> > > > difficulty with
> > > > RPN and the right to left world, but there again I keep wanting to
start
> > > > programming in column 7   :-)
> > >
> > > As long as it doesn't make you slash letters of instead of zero you're
> > > ahead of the game...:-)
> > >
> > >   73 de Maggie K3XS, who started in FORTRAN on an IBM 7040 back in
high
> > > school...
> >
> > ----
> > Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> > To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>
> --
> 73, Roy
>
> Internet: w0sl@amsat.org
> Home Page: http://home.swbell.net/rdwelch
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org

----
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