[3] It requires two disk drives, which greatly limited its potential audience.
[2] Atari Pascal was developed by MT Microsystems, which was owned by Digital Research.
[3] The compiler produces code for a virtual machine, as with UCSD Pascal, instead of generating machine code, but the resulting programs are as much as seven times faster than Apple Pascal.
[3] MT Microsystems wrote Atari Pascal with a planned "super Atari" 8-bit model in mind, one with 128K of RAM and dual-floppy drives (similar to a common configuration of the 1983 Apple IIe).
[6] Each works with a single floppy drive, a point emphasized in Draper Pascal magazine ads.