ATasm produces Atari native binary load object files or can optionally target.Code development can now be performed using 'modern' editors and compiles with lightning speed. ATasm v1.11 A mostly Mac/65 compatible 6502 cross-assemblerĬopyright (c) 1998-2021 Mark Schmelzenbach, modified by Peter Hinz (2021)ĪTasm is a 6502 command-line cross-assembler that is compatible with the original Mac/65 macroassembler released by OSS software.