On Mon, Jul 29, 2013 at 10:33 PM, Kyle Owen <kylevowen at gmail.com> wrote:
I know there has been interest in this before and
would love to help create
a final product. A PDP-8 S-100 board using a 6100/6102 or 6120 would also
be nice. What to do with the extra nibble in RAM, though? Checksum?
The S-100 bus, in its later incarnations, supports 16-bit data by
repurposing the two eight-bit unidirectional data busses into a single
16-bit bidirectional bus. You don't have an "extra nibble", you have
a "missing nibble".