15 Feb
2008
15 Feb
'08
5:32 a.m.
On Fri, Feb 15, 2008 at 02:57:08AM -0500, Roy J. Tellason wrote:
> Depending on which model of CBM you have,
there's a no-adapter
> solution...
Hmm. I wasn't thinking PET as much as C64, when
I wrote that. The ROMs in
that one were all 24-pin parts, a 4K character rom and the BASIC and Kernal
being 8K, which would need a 2764.
Ah... yes. That's entirely different.
I can see how you'd stack a couple of sockets to
connect the pins you wanted
to connect, but am a little less clear about the other ones. Like if you
wanted to interrupt a signal going through -- just bend it out? Maybe I need
to look at the pinouts of those parts...
You poke out the pin in the middle socket, then you have the room to solder
to the upper socket pin and run a wire to the relevant lower socket pin.
I built a 2764->2732 adapter that does some fiddly stuff with the two or
three pins at the top of each of the sockets (Vpp, Vcc - those sorts of
pins).
-ethan
--
Ethan Dicks, A-333-S Current South Pole Weather at 15-Feb-2008 at 13:20 Z
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Ethan.Dicks at usap.gov http://penguincentral.com/penguincentral.html