More on Microsoft Basic: listing from behind a filing cabinet

Found an interesting page again on the origin of Microsoft Basic, the 8080 version.

A listing was recovered in 2000. It was behind a filing cabinet for 20 years! Lots of technical details on the development process for this version of BASIC. Especially talking about developing 8080 assembler stuff without the aid of an 8080 cross-assembler for the PDP-10.

00340 SUBTITL VERSION 1.1 -- MORE FEATURES TO COME

The copyright reads :

00400 -------------------------------------------
00410 COPYRIGHT 1975 BY BILL GATES AND PAUL ALLEN
00420 -------------------------------------------

It also says ‘written originally on the PDP-10 at Harvard from February 9 to April 27.’ Remember that the spooler output (above) showed that this printout was made on 30th April 1975.

Interestingly, another comment tells us that :

00560� PAUL ALLEN WROTE THE NON-RUNTIME STUFF.
00580 BILL GATES WROTE THE RUNTIME STUFF.
00600 MONTE DAVIDOFF WROTE THE MATH PACKAGE.

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