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MacASM 1.2

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Year released:
[www].se [ftp].se [mirror].us
MacASMv1.2.sit (40.76 KB)
For System 1 - 5 - System 6.x
This app works with: Mini vMac

Not to be confused with McAsm.

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

The download comes with several example files.

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.

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.


MikeTomTom's picture
by MikeTomTom - 2018, March 16 - 8:41am

Excellent. Thanks Daxeria. And for the McAssembly update too (I was wondering if a version 2 McASM/McLink eventuated and I guess this is it). The readme docs will be moved over now.

Daxeria's picture
by Daxeria - 2018, March 16 - 5:22am

@MikeTomTom: We do now Smile

MikeTomTom's picture
by MikeTomTom - 2018, March 16 - 12:38am

Thanks g0blinish for the documentation link and ndtronerud for uploading it.

However: The documentation is for McASM and not MacASM.

The docs also cite another program: McLink

McAsm and McLink are an assembler and a linker respectively for the Apple Macintosh computer. McAsm is used to assemble source files containing Motorola 68000 assembly language code and pseudo-ops. McAsm can also assemble standard and user-defined resources. McLink is used to combine files produced by McAsm into an executable application program file.

As McASM and McLink are Version 1.0 programs written and Copyright © 1985 by Dave McWherter, not 1984 by Yves Lempereur, I would think that this documentation perhaps belongs elsewhere.

I only wish that we had a McASM/McLink page we could move it to Sad

g0blinish's picture
by g0blinish - 2015, September 25 - 7:55am

here is converted docs for 1.0(founded at mac-gui):

lilliputian's picture
by lilliputian - 2015, May 17 - 2:01am

My guess is there is a heavy book out there of the ringed variety that is the manual to this thing...