xa

xa is a high-speed, two-pass portable cross-assembler for the 6502 CPU
with a C-like preprocessor. One of several popular 65xx assemblers, xa
is written in C and released under the GPL-2. It has been in continuous
development since 1989.
Other tools in the xa package are:

file65   - a tool for printing information about o65 object files.
ldo65    - a linker for o65 object files.
printcbm - a simple CBM BASIC detokenizer similar to the far more
           powerful petcat proviced by VICE.
reloc65  - a relocator for o65 object files.
uncpk    - a c64 cpk archive manager.


          

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License: GPL-2.0-or-later
URL: https://www.floodgap.com/retrotech/xa/