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You can download the following files from this web site:
| File Name |
Summary |
Description |
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ucsd-psystem-os-1.3.tar.gz
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The complete source.
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Select this link and “Save as...” to save the file
on your computer. This file is in a common Unix archive format,
most Windows archive programs will be able to unpack it for
you. The text files in this archive are in a plain text format,
not UCSD Pascal text file format.
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building.html
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How to build the sources.
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These instructions are for how to build the source files to
create system disk images. They apply to Unix and Linux
systems. On Windows you will need to use something like Cygwin to build the disk images.
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system.vol
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The cross compiled system disk image.
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These files are UCSD p-System disk images, built from the sources
in the ucsd-psystem-os-1.3.tar.gz file.
They are not boot-leg copies of proprietary
implementations. You can execute them using the
ucsd-psystem-vm project, and probably other UCSD p-machine
interpreters. These disk images have no interleaving.
You can extract, modify and create UCSD Pascal disk images
using the ucsd-psystem-fs project. It has a text conversion
utility, too.
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utility.vol |
The cross compiled utilities disk image.
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If you use Ubuntu Linux, there are pre-built packages available
for installation using the normal sudo apt-get install method,
from this package archive (PPA).
Instructions are available there for how to manually add the PPA
to your /etc/apt/sources.list file, but the following commands
are sufficient on recent versions of Ubuntu:
sudo add-apt-repository ppa:pmiller-opensource/ppa
sudo apt-get update
sudo apt-get install ucsd-psystem-os
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The ucsd-psystem-fs project is developed using Aegis SCM.
The Aegis repository for this project is available.
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| Version |
Released |
Commentary |
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I.3
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1977-Aug
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Partial sources for this version were originally uploaded to
Compuserve (self extracting zip file).
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I.4
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1978-Jan
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The source code for this version is available from the UCSD Yahoo Group Files.
The virtual machine for this version was the same as I.3, but it is
unclear whether or not a recompile was necessary when upgrading.
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I.5
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1978-Sep
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The source code for this version is available from UCSD. That web page also has the license permitting
non-commercial use, modification and distribution of the UCSD sources.
The virtual machine for this version was slightly different than
I.4, so programs had to be re-compiled, when upgrading to I.5.
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II.0
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1979-Jan
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The source code for this version is available from BitSavers.
The virtual machine for this version was different than I.5,
so programs still had to be re-compiled, when upgrading to II.0.
The system sources in the ucsd-psystem-os-1.3.tar.gz file are for
the II.0 system. (Which is a slight problem, because
the ucsd-psystem-vm project is a II.1 p-machine, and the cross compiler
targets the II.1 p-machine.)
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II.1
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1979-May
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There is no source archive known at this time. Possibly
some-one has the sources to this version on some old floppies in
a box in their garage or attic. If you were involved in the
UCSD Pascal project in 1979 please check, an perhapse nudge
your former colleagues to do the same.
The virtual machine for this version was slightly different than
II.0, so programs had to be re-compiled, when upgrading to II.1.
The ucsd-psystem-vm project is a II.1 p-machine. The cross compiler
targets the II.1 p-machine.
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