Ebook 6502 assembly language subroutines

This book is intended to serve as a source and a reference for the assembly language programmer. It contains an overview of assembly language program- ming for a particular microprocessor and a collection of useful routines. In writing the routines, we have used a standard format, documentation package, and parameter passing techniques. We have followed the rules of the original manufacturer's assembler and have described the purpose, procedure, param- eters, results, execution time, and memory usage of each routine. This overview of assembly language programming provides a summary for those who do not have the time or need for a complete textbook such as is pro- vided already in the Assembly Language Programming series.