Letter X

xa - 6502/65816 cross-assembler

Website: https://www.floodgap.com/retrotech/xa
License: GPL-2.0-or-later
Vendor: Alcance Libre, Inc.
Description:
xa is a high-speed, two-pass portable cross-assembler. It understands
mnemonics and generates code for NMOS 6502s (such as 6502A, 6504,
6507, 6510, 7501, 8500, 8501, 8502 ...), CMOS 6502s (65C02 and
Rockwell R65C02) and the 65816.

Key amongst its features:

    * C-like preprocessor (and understands cpp for additional feature
      support)
    * rich expression syntax and pseudo-op vocabulary
    * multiple character sets
    * binary linking
    * supports o65 relocatable objects with a full linker and
      relocation suite, as well as "bare" plain binary object files
    * block structure for label scoping

Packages

xa-2.4.1-1.aldos.src [209 KiB] Changelog by Joel Barrios (2025-12-12):
- Update to 2.4.1.

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