Log Message:
Import atasm-1.04 from pkgsrc-wip.  Packaged by mor at linex dot com
in PR pkg/22190, and modified by me.

This is a 6502 cross-assembler optimized to code for the Atari 8 bit
computer line.  It is meant to be compatible with the Mac/65 assemlber
on the native Atari 8 bit platform.