This is a nice Macintosh based assembly enviroment and compiler.

From Macway:

Date: Mon, 1 Dec 97 09:58:00 -0900
From: EvangeList <evangelist@...>
Subject: PR - Fantasm 5 - New Price and Revised Demo

This announcement is from:

Lightsoft, <lightsoft@...>

Lightsoft have introduced a new Fantasm 5 price (complete package) for
users who are students, unemployed or on a low income.

There is also a revised demo/unregistered package, including the PowerPC
assembler (in response to users requests).

More details can be found at our web page: <http://www.tau.it/lightsoft/>

For other details, or comments on this message, please email
<lightsoft@...>

Fantasm 5 is a totally revised version of the popular Macintosh Assembler
'Fantasm' (by Lightsoft). It contains, amongst other things, a graphical
project manager making it one of the easiest development environments to
use on the Mac, in addition to being THE development system for producing
fast PowerPC and 680x0 native code.