dxa65 is a disassembler for MOS 6502 and compatible CPUs
NMOS 6502s (such as 6502A, 6504, 6507, 6510, 7501, 8500, 8501, 8502 ...)
CMOS 6502s (65C02 and Rockwell R65C02)

WWW: http://www.floodgap.com/retrotech/xa#dxa