On 05/20/2017 04:59 AM, jim stephens via cctalk wrote:
I just ran across a sale on epay by a guy who thought
you could pull
the processor chip off the board and sell each in separate auctions.
I couldn't find the processor from the huge number of gold scrap chip
auctions he had, but he said it (or the other) chip(s) for the board
were listed.
I think giving him the benefit of the doubt, he thought that the two
were separable like motherboards and processors are now day. Worst
case he was just an unfortunate idiot that destroyed the board.
I sent him an email telling him the value I place on it (tested) and
suggested that he think of older boards as the full components to be
kept together unless he wants to destroy the board, or knows what he
is doing breaking them up. Of course on old Qbus and the like boards,
one does have some components that are more valuable if you break up
the board, and pull "unobtainium" chips. But pulling out the KDF
processor isn't one of them in general.
I just bought a KDJ Jaws chip for a "round 2it" project to try to get
it running, as I archived a PDP11 "Hack" page indicating how to get
one running on a proto board with minimal hardware.
I don't know if you could do that with the KDF, but that isn't what
this guy is doing.
Argh, CPU chips used on dec board loose value as the complete board
carries the value.
KDF with the second chip is useful but the logic needed to may a "CPU"
of the raw chips is
not trivial.
Best chip for hacking and useful off a board (Falcon, KXT11, RQDX,
others) is the T11. Its easily
useful like a 8085 or Z80.
Allison
thanks
Jim