20 Oct
1999
20 Oct
'99
7:12 a.m.
At 02:28 PM 10/20/99 -0400, Allison wrote:
Flip chips, M series and all were really dictated not
by what could be put
on a board but how many connections the bord could make. For a flip chip
it was 18 or 36 (someone?). A 16 bit parallel load register like say a
pair of LS573s would need 32 IO, plus power and controls. See the
problem?
Ok, so this suggests a possible solution/idea. We use simm sockets. You can
get them fairly cheaply, there is a wirewrap version, and the PC houses all
have a standard template for the bottom of the board. I suppose one could
even make a Q-bus that small (its 72 pins as well IIRC).
Unlike Tim I think TO-3's would be way to much of a pain, but TO-92s are fine.
--Chuck