6502 Assembly Language Programming 2nd Ed 65C02 Leventhal Osborne Vintage Apple
6502 Assembly Language Programming – Second Edition (Includes 65C02). A classic and highly regarded guide to 6502 assembly programming, this Second Edition includes expanded coverage of the 65C02 instruction set.
6502 Assembly Language Subroutines Leventhal Vintage Microprocessor Programming
6502 Assembly Language Subroutines – Leventhal & Saville (Osborne/McGraw-Hill). Detailed 6502 assembly subroutines and examples. Classic and highly regarded reference for6502 assembly language programming, covering over 40 practical subroutines and real-world programming techniques.