On 19/04/07, JP Hindin <jplist2007 at kiwigeek.com> wrote:
Ummm,
aren't those just .1" spaced contact two-sided card-edges? My
memory may be faulty, but I seem to remember taking prototype boards
with 100 "tongues" per side (what _is_ the proper word?) and using a
hacksaw to cut off the required amount and shape (22 per side?) to fit
the expansion port shape. It would also be a lot easier to solder
to....
Ugh, I seemed to be doped up this morning. I was meaning the connectors
for the EXPANSION port, not game cartridges which, as you say, have
tongues and not slot headers.
The appropriate broken carts I would be looking for would be REUs and
similar for these headers.
Ummm, either one or both of us are still confused :-) The C= has two
ports that can be called "expansion" ports: The User port, a 24
connector card edge of the motherboard, and the 44-pin expansion port,
a slot connector soldered onto the motherboard. The former has 17
pins controlled by one (or both?) of the 6522's (the rest is +5, GND,
etc.) and I think the spacing is .156". Jameco seems to still stock
those.
The expansion port has pretty much all the 6502 signals available, and
is where anything needing the address/data bus would be plugged in -
including game carts, REU, IEEE488, CP/M etc. If you're looking to
add any "real" hardware, that's what you want; your hardware just
needs to have the card edge with the "fingers" (thanks Dave) at .1".
(Oh, and the PCB needs be the right fatness, but I think that's all
standard, no?)
If you are just looking for communicating with the C64/C128, the User
port will do just fine, either by parallel or serial protocol. Modems
and printers used to hang off here, but I think finding old ones to
rip the connector off would be difficult. My search on Jameco showed
P/N 422991, which looks right.
Joe.