On Thursday 23 August 2007 18:11, Joe Giliberti wrote:
  I have been scrounging for parts for my computer, and
I believe I have hit
 the jackpot. A friend of mine set me up with some older Seiko control
 system boards, various revisions, from the late 80s. On them are many ICs,
 including RAMs, Z80 CPUs, and PIOs, as well as some AMD Arithmetic
 processors, a Z80 SIO/2, and other various components. I want to try to
 make my computer from these components. Can anyone point me in a good
 direction for the datasheets, preferably online, for these mostly obsolete
 ICs? Some of them I don't even know what they are, and some I cannot find
 online, presumably because they are obsolete. Here's a partial list of
 them: NEC D780C
 NEC D770008AC-6
 NEC D4364C-15L
 NEC D8251AC
 NEC D449C
 AMD AM9511A-1DC
 Sharp LH0081A
 Sharp LH0082
 Intel 8339
 Intel 8325
 Intel K3235001
 Zilog Z8442BPS
 Zilog Z8430BPS
 Thanks for any help 
You could have a look here,  for starters:
http://www.classiccmp.org/rtellason/parts-index.html
:-)
I suspect that second one is a pretty generic 64K DRAM,  the next one an
8251...
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin