5 Apr
1999
5 Apr
'99
12:21 p.m.
At 10:28 PM 4/5/99 +1000, Huw Davies wrote:
Of course, I located the source to pdp8 Pascal some years ago, which is
modified P4 (Urs Ammann, Kesav Nori, Christain Jacobi). I gave it to
someone to put on a pdp8 ftp site, and of course I still have the code.
-Lawrence (and you thought I only did Teraks) LeMay
The Pascal Microengine was a hardware implementation of P-code a stack
based instruction set that was designed to make compilation from Pascal
into it easy. The original compiler (P4) was written by Urs Amman (sp?) at
ETH. I believe that this compiler formed the basis of the UCSD Pascal
environment which was Java '70s style :-)
My UCSD Pascal history page, including a vital 1973 source code
contribution from Huw, is at <http://www.threedee.com/jcm/>.
As I point out on my page, even Prof. Nicklaus Wirth may not have
a copy of his original compiler source code. Later he did find a
CDC 6400 7-track mag tape that may hold the source, but he's unable
to find a machine to read it. If anyone can help with this project,
that would be great!