Microsoft BASIC for 6502 Original Source Code [1978]

antsnark · Post by **antsnark** » 15 Jan 2015 01:05

http://www.pagetable.com/?p=774

This is the original 1978 source code of Microsoft BASIC for 6502 with all original comments, documentation and easter eggs:

http://www.pagetable.com/docs/M6502.MAC.txt -- 1978-07-27, 6955 lines, 161,685 bytes

This is currently the oldest publicly available piece of source written by Bill Gates.

Like the 8080 version, the 6502 version was developed on a PDP-10, using the MACRO-10 assembler. A set of macros developed by Paul Allen allowed MACRO-10 to understand and translate 6502 assembly

Lavr · Post by **Lavr** » 15 Jan 2015 07:35

Интересно - особенно, как они реализовывали тригонометрию...

У меня хоть и есть исходники от "the 8080 version" - но я декомпилировал их сам,
поэтому, хоть они и собираются корректно в бинарик, но комментариев не имеют,
а значит и догадываться трудно - где что.

esl · Post by **esl** » 17 Jan 2015 10:04

уже точно обсуждалось

http://altairbasic.org/

Altair BASIC 3.2 (4K) - Annotated Disassembly

[This is a work in progress, about 90% complete]

Here is a complete annotated disassembly of Altair BASIC 3.2 (4K). I have faithfully followed the program order, and the code naturally divides into three sections - the Interpreter, the Maths Package, and Initialisation.

Each of these sections is more-or-less logically subdivided into a number of subsections.