Lisa Monitor operating system and development environment

 > a clone of MSDOS

I suspect you have a copy of the Lisa's first operating system which was called the LISA MONITOR (this was also a development environment). This used a command line text-only user interface in which you pressed a key to activate a command. This OS was based on the Apple Pascal system which Apple provided for its Apple II and Apple III systems and which in turn was based on the UCSD Pascal p-system.

Apple used the MONITOR to develop its Lisa OS and also its GUI-based Lisa applications which used the Lisa Desktop Libraries. When the Lisa OS was stable Apple replaced the Lisa Monitor with the Lisa Workshop.

I have an Apple document which describes the Lisa Monitor in detail. See www.sunder.net for a copy.

The Monitor survived the Workshop in that the LisaTest and MacWorks disks run the Monitor.

• David Craig

> My Lisa 2 started life as a Lisa 1. It's an ex Apple Lisa. I bought
> it from an Apple employee about 15 years ago and he said it was one of
> the prototypes. It does have the Apple property sticker. The other
> thing that lends credence to his claim is one of the OSs. It came
> with 2 Profiles and one of them has, for the lack of a better
> description, a clone of MSDOS. It works fine except I've removed the
> dreaded suicide battery. I'm not selling it anytime soon, but I'm
> just curious what something like it would go for?

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