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| lyn at healthquiz.com |
 Posted: Sun Jun 20, 1999 6:17 pm |
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just curious: how was the erlang compiler bootstrapped?
-Lyn
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| joe at bluetail.com |
| Posted: Mon Jun 21, 1999 1:20 pm |
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lyn wrote:
> just curious: how was the erlang compiler bootstrapped?
>
First I designed an abstract machine to execute Erlang (
this was called the JAM machine. (JAM = Joes
Abstract machine) - Then I wrote a compiler from Erlang -> Jam
+ an emulator to see if the machine worked. Both these were written in
prolog.
At the same time Mike williams wrote a C emulator for the JAM.
Then I rewrote the erlang -> jam compiler in Erlang and used the prolog
compiler to compile it. The resultant object code was run
in the C emulator. Then we threw away prolog.
Some of this is described in:
http://www.ericsson.se/cslab/erlang/publications/prac_appl_prolog.ps
/Joe
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| jhague at dadgum.com |
| Posted: Mon Jun 21, 1999 2:31 pm |
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On Mon, 21 Jun 1999, Joe Armstrong wrote:
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> JAM machine. (JAM = Joes Abstract machine)
I didn't realize that. Ah, trivia :)
On a related note, what is "VEE"? One of the Erlang docs refers to JAM,
BEAM, and VEE.
James
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| tobbe at serc.rmit.edu.au |
| Posted: Mon Jun 21, 1999 2:50 pm |
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> On a related note, what is "VEE"? One of the Erlang docs refers to JAM,
> BEAM, and VEE.
VEE = Virdings Erlang Engine
BEAM = Bogdans Erlang Abstract Machine
(Virding == Robert Virding)
(Bogdan == Bogumil Hausman)
/Tobbe
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