Testing Power Supplies! Re: Norsk Data Nord-10/S restoration effort on the way!

[Ben Franchuk]

William Maddox wrote:

> I thought that 74F series parts were generally replacements for 74S
> parts.  Is this incorrect?  A more serious concern is that the parts
> that have been recently produced seem to be simpler glue logic, bus
> transceivers, etc.  Many of the nice functional blocks used for building
> CPUs were dropped from manufacturers catalogs years ago, and many were
> never even offered in the more recent logic families.  Take, for 
> instance, the 74172, an 8x2 dual-ported register file used in the Data 
> General Nova 2.

You can still GET that at  http://www.unicornelectronics.com/ but just what
is stock on hand is all that is left. They have some 74S and 74H too.
Ben.