Package xa

6502/65816 cross-assembler

http://www.floodgap.com/retrotech/xa/

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
General Commands
Command Description
file65 print information for o65 object files
ldo65 linker for o65 object files
printcbm list a Commodore BASIC file
reloc65 relocator for o65 object files
uncpk manage c64 cpk archives
xa 6502/R65C02/65816 cross-assembler