The only things I remember about APL were:
1. Square <backspace> divide symbol formed something that looked like a
domino (1 over 1) and was the random number generator.
2. Someone always finds a way to do a moderate sized task in one line of
code. The ultimate obfuscated code contest.
On Mon, Mar 30, 2020 at 4:35 PM John H. Reinhardt via cctalk <
cctalk at classiccmp.org> wrote:
On 3/30/2020 6:29 PM, Marc Howard wrote:
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.
one input or print a program on a PDP-11 with mere mortal equipment?
On Mon, Mar 30, 2020 at 4:07 PM John H. Reinhardt via cctalk <
<mailto:cctalk at classiccmp.org>> wrote:
On 3/30/2020 1:37 PM, Mark Matlock via cctalk wrote:
> I have the APL-11 V2.1 source files on a RL02 disk image. I
make it available at http://www.rsx11m.com/apl11.zip
> Once you mount the disk image with Simh, the are two ready to
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
> When you install the APL task experiment with the /INC to
the available workspace, On my system, I can
> INS APL6.TSK/INC=37000 to max the
workspace for the single
> 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
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!
I remember we had APL at Rose-Hulman when I was in college there
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
On page 1-5 of the APL-11 Reference Manual that Mark posted there is a
table showing the ACII equivalents for the special APL character set.
There are also instructions there on how to do it. It's a combination of
characters and backspaces. Kinda tough on a video terminal but workable on
John H. Reinhardt