Not to be confused with [McAsm][1].

MacASM was the first assembler written for the Macintosh. It was used,
among other things, to program [BinHex][2].

Simple commands include "list", which displays the contents of an
opened file, and "quit", which will close the application. The tab key
will create a new line of code on a fresh carriage return, and Esc
will clear the contents of the screen.

MacASMv1.2.sit contains the application itself and example source
code.

MacASM.dc42.zip contains a Disk Copy 4.2 disk image with MacASM v1.0
and v1.2, several code examples, and a System that can boot early Macs
and Mini vMac.

Compatibility
Architecture: 68k

MacASM will not run in System 7 or later. If you attempt to run MacASM
in System 7-9, it will open and immediately quit.

  [1]: http://macintoshgarden.org/apps/mcasm-mclink
  [2]: http://macintoshgarden.org/apps/binhex-20