18 Jun
2009
18 Jun
'09
3:57 a.m.
On Thu, 2009-06-18 at 01:04 -0300, Alexandre Souza wrote:
My fiancee has done that, with a couple of resistors, an SSM2044
analogue filter IC (dead) and the knackered ceramic resonator from the
memory board on my old PDP-11.
The answer seems to be to use a clear-coat lacquer with the same
refractive index as the resin to smooth over the bumpy surfaces. Pics
and further instructions from when she gets back from the crafts
store ;-)
Gordon
Alexandre
Souza wrote:
No, I'm not talking about the PACE chip, but the keyfob with the 386 die
encased in plastic :o)
I never got to encase in resin a chip and make it crystal clear. I tried
many many times with no success :( I'd **love** to have one of these,
principally FREE :o)
One problem with taking advantage of a PACE chip (free or
otherwise) is
that the I/O pads aren't compatible with TTL, or with much of anything
else either. The specs are very strange. National made some buffer and
transceiver chips designed to work with it, but of course they are even
more like unobtanium these days than the PACE itself. I suspect that
the easiest thing to interface to it nowdays would be CD4000B series
CMOS logic, which is extremely slow, but then so is the PACE.