30 Oct
2003
30 Oct
'03
11:23 a.m.
On Thu, 2003-10-30 at 14:08, Bob Shannon wrote:
Guy Sotomayor wrote:
<snip>
The HPs use CML (Current-Mode-Logic) which is a little bit strange but
there are replacement boards available (from dealers and others).
Err, thats not exactly correct. Early HP's use CTL logic, like the 956,
etc. Its similar to TTL
but with an uncommited emitter output stage. Logic supplies are +4.5
and -2.
Sorry. IBM used CML which is similar to CTL.
--
TTFN - Guy