Marc Howard cramcram at
Mon Mar 30 18:29:32 CDT 2020

Stupid question time.  I last used APL in a class in 1975.  Back then you
needed a magic terminal and/or a magic Selectric typeball.  How does one
input or print a program on a PDP-11 with mere mortal equipment?


Marc Howard

On Mon, Mar 30, 2020 at 4:07 PM John H. Reinhardt via cctalk <
cctalk at> wrote:

> On 3/30/2020 1:37 PM, Mark Matlock via cctalk wrote:
> >
> > Bill,
> >      I have the APL-11 V2.1 source files on a RL02 disk image. I will
> make it available at <
> >
> >      Once you mount the disk image with Simh, the are two ready to run
> task images that will run under RSX11M or M+
> > In [201,200]APL6OK.TSK and APL7OK.TSK that are the REAL*4 and REAL*8
> versions of APL-11. On the disk are the
> > Original .MAC sources as well as files from a RSX SIG tape that modified
> APL-11 for I/D under RSX11M+ that increased
> > The workspace (.BXWA from ~30000 to ~60000 bytes). It also contains a
> character set for Vt220 for the APL character set.
> >
> >     When you install the APL task experiment with the /INC to maximize
> the available workspace, On my system, I can
> > INS APL6.TSK/INC=37000 to max the workspace for the single precision
> version.
> >
> >     Also, the scanned APL-11 reference manual can be downloaded at
> <
> >   and the APL11 installation guide at
> <>
> >
> >     The RSX SIG files that have the info to change APL-11 to an I/D
> RSX11M+ task are at [370,360] on the RL02 disk. I remember having this work
> back in the mid-1980s butI have not been able to get it to work today. If I
> link it with ODT it seems to blow up when the first overlay is loaded. If
> anyone could help with that I’d really appreciate it!
> >
> > Best,
> > Mark
> Thanks Mark!
> I remember we had APL at Rose-Hulman when I was in college there from
> 1978-1983.  At first I thought it was on the VAX-11/780 that showed up over
> the summer of 1980, but now I realize it had to have been on our PDP-11/70
> running RSTS/E.  Probably APL-11 V1.X since it was there in the Fall of
> 1978 when I started.  We had a couple of DEC LA36's with the APL character
> set and keyboards.
> --
> John H. Reinhardt

More information about the cctech mailing list