Intellec MDS questions

[Eric Smith]

Paxton wrote:
> The MDS 800 was the first development system It was a Multibus 1 backplane
> and usually had a CPU card, memory card, a two disk floppy drive
> controller, a HD controller (SMD most likely)

The MDS 800 did NOT originally have a hard disk controller.  That didn't
appear until much later, well into the Series 2 era.  Since the MDS 800
used Multibus, the HDC was available as a retrofit.  In my experience, it
was *very* rare to find an MDS 800 with an HDC, or even with the
double-density FDC.

> The MDS 225 is either a System 2 or 3 in the development system line.

An "MDS 225" was specifically a Series II or a Series III, but I've
forgotten which.   If you upgraded a Series II to a Series III, the
model number changed.

Eric