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PJRC Store 8051 Dev Board, $79 LCD 20x2 Display, $11 Serial Cable, $5 12 Volt Power, $8 More Components... 8051 Tools Main Page Software Overview Linux AS31/SDCC Windows AS31/SDCC AS31 Manual AS31 Inst. List Old AS31 PAULMON Monitor Development Board Code Library 89C2051 Programmer Other Resources

AS31 Assembler

Also, special thanks to Adam Kropelin, who compiled as31 for MSDOS/Windows using Microsoft Visual C++.

The AS31 documentation, derived from the original as31 man page is now available in html format. It still looks and feels like a unix man page, unfortunately.

• Version 2, Beta Test #3 (updated March 20, 2001), download source code. Builds on Linux. Here is a WIN32 Build (command line). Fixes S-Record output, and command line version return non-zero on error, which is useful for running from a makefile.
• Version 2, Beta Test #2 (updated July 25, 2000), download source code only. Builds on Linux (no Windows or DOS build yet). Fixes memory leaks and memory initialization. The GTK version runs correctly now.
• Version 2, Beta Test #1 (updated April 20, 2000), download source code only. Builds on Linux (no Windows or DOS build yet). The new code has some bug fixes and continues parsing past syntax errors, like you'd expect it to do. There's even an (experimental) GTK version. Here's a screenshot. A graphical Windows version is planned, once the GTK version is stable. If you use AS31, now would be a great time to report bugs and/or request new features.
• Version 1.0 UNIX Source Code. A binary is also included for linux. Compiling on other unix platforms should be pretty simple. Some source is in Yacc, but .c and .h files are provided. Warning: version 1.0 has a nasty bug in the lexer, and when built on modern linux systems, it has a bug that corrupts the output filename. Use version 2.
• Version 1.0 MSDOS 16-bit Binary compiled by Adam. If you use Windows, try this one first.
• Version 1.0 Windows95/NT 32-bit Binary also compiled by Adam.
• Version 1.0 Hacked 32-bit MSDOS binary. This is an attempt at cross compiling within linux for msdos.