6502 code library for Commodore 64
c64.inc - common constants, C64-specific addresses, etc.
debug.inc - helper routines
stdio.inc - sting input routinines, coursor contoll macros
div.inc - functions for integer division
mul.inc - functions for integer multiplication
sqrt.inc - functions square root calculation
int2str.inc - int to string conversion
str2int.inc - string to int conversion