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- Newsgroups: comp.compilers
- Path: sparky!uunet!world!iecc!compilers-sender
- From: Paul.Robinson@f417.n109.z1.fidonet.org (Paul Robinson)
- Subject: Pascal Compiler Source
- Reply-To: Paul.Robinson@f417.n109.z1.fidonet.org (Paul Robinson)
- Organization: Compilers Central
- Date: Sat, 21 Nov 1992 07:45:52 GMT
- Approved: compilers@iecc.cambridge.ma.us
- Message-ID: <92-11-124@comp.compilers>
- Keywords: Pascal
- Sender: compilers-sender@iecc.cambridge.ma.us
- Lines: 60
-
- For anyone interested, I have the source to a Pascal Compiler which was
- written in Pascal. I made some minor modifications and was able to
- compile this program under Turbo Pascal 6. It appears to be a full
- compiler, (not merely a toy) with support for the entire language
- including gotos, pointers and at least two external files (PRR and PRD),
- in addition to INPUT and OUTPUT.
-
- The only problem I have with it is that the manner in which it allocates
- memory I can't get it to compile itself. By enabling Mark() and Release()
- it got somewhat farther down in the source before it died, but apparently
- what is happening is either (1) it was set up on a VERY large memory, i.e.
- a machine with at least a meg of accessible memory (2) the program was
- compiled using some scheme involving memory paging and such, or the
- program could have been compiled in pieces, i.e. when the program is at a
- certain spot, all of the label and indexes are saved, and the program then
- restarts the rest of the source from that point.
-
- The source to the compiler is about 122K, the source to the P-CODE
- interpreter is another 29K. If someone in the U.S. wants me to send them
- a copy, I will send it out either in 5 1/4" 360K disk, or on a 720K 3 1/2"
- disk. The price will be $3 to cover disk costs and postage. This is the
- "PCOM" compiler. I'll include with this a similar subset Pascal compiler
- known as "FACILIS" which does work and is compilable using Turbo Pascal 3,
- but is not self-compilable due to lack of pointers and the GOTO
- instruction. On the PCOM compiler, I'll include the original source and
- my corrections.
-
- However, I also have three others. One was the "NBS" pascal compiler
- which was created for the PDP-11 under contract to the National Bureau of
- Standards. The other is a set of 10 releases of the "SWEDISH PASCAL"
- compiler also written for the PDP-11, and consisting of several upgrades
- during 1975-1979.
-
- The NBS pascal compiler takes about 400K in a compressed archive,
- including the PDP-11 assembly and Compiler Source.
-
- The Swedish Pascal compiler releases take three 720K disks. If someone
- wants these, I can send them in ZOO or ZIP archive format, on MSDOS
- diskettes. The cost in the U.S. would be $10. If you want it on 5 1/4,
- say so otherwise I'll send 3 1/2". If you only wanted the NBS pascal
- compiler, the price would be the same $3, or $8 for the Swedish Pascal
- Compiler alone.
-
- Or all three of these sets for $12. To the best of my knowledge these
- compilers are all public domain. I know for a fact the NBS one is, being
- done under contract for a U.S. Government agency. For anyone of interest
- in how compilers are written, I can send these out.
-
- Send either cash or a Post Office Money order if you are interested in
- any of these to:
-
- Paul Robinson
- 8604 Second Avenue #104
- Silver Spring MD, 20910 USA
-
- If you are outside of the U.S. or Canada, use an international money order
- or a US dollar check amounting to $10 plus the above price.
- --
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