cclist at sydex.com
Sun Oct 10 16:07:16 CDT 2010
On 10 Oct 2010 at 16:03, Sridhar Ayengar wrote:
> Eric Smith wrote:
> > I'm not sure about VTL, but Dutchess was a specific generation of
> > bipolar gate array, containing up to 134 gates. It was basically
> > compatible with normal 5V TTL.
> IBM *does* tend to do things differently, but they *do* document the
> hell out of everything. The trick is finding the documentation, and
> sometimes it can cost a goodly chunk of change.
I seem to recall that "VTL" is an acronym for "variable threshold
logic" and dates back at least to the 1960s.
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