18 Oct
2007
18 Oct
'07
9:39 a.m.
On 18 Oct 2007 at 20:26, Ethan Dicks wrote:
I _do_ have some "user port"-ish hardware
for ISA, though -
essentially one to three 8255s on either a 2/3-length or full-length
card. A couple of them are just meant to hang external cables out the
back to access the I/O, and another couple are also bread-board cards,
with either grids of 0.1"-spacing holes, or real nylon-block
prototyping strips, with a pre-done circuit area for instruction
decode, latch, off-board DC-37 connector, etc.
I have nothing like it newer than for ISA, unfortunately.
PCI versions of the same card can be had for not a lot of money
(<USD$100 for a 3-8255 version). But I've looked inside of systems
lately, and there tend not to be too many PCI slots either--aside
from rackmount industrial control units.
Cheers,
Chuck