27 Nov
2007
27 Nov
'07
8:47 a.m.
On Monday 26 November 2007 18:28, Ethan Dicks wrote:
Yes, Radio Shack even used to sell boards that were set up for that
connector, and the connectors themselves, in both soldertail and wire-wrap
versions. I have a rackmount box somewhere that has room for a bunch of
those, though it won't take the very tall cards.
On Mon, Nov 26, 2007 at 01:42:36PM -0500, Roy J.
Tellason wrote:
I *think* that was also a 44-pin connector, but at smaller spacing. I'd have
to look to be sure though.
On Saturday 24 November 2007 23:31, Ethan Dicks
wrote:
Oops... my fingers were probably thinking 25.4mm to the inch when I
mistyped the 4.
The User Port on all the C= machines is
more-or-less the same... 12x2
0.154" edge connectors.
I thought those were 0.156"? I'm trying to remember what all edge
connectors used to be common. I'm
thinking that 0.1", 0.125", and 0.156" were some of the more common
sizes of connector finger out there.
Those all sound common.
And how many pins?
Various ones... For the C= line, 6/12 and 12/24 were common (cassette
port, User Port, IEEE-488), but the VIC-20 had a 22/44 @ 0.156" expansion
connector. The C-64 was much smaller, but I can't reliably recall the
numbers off the top of my head, so I won't guess. Seemed to me
there was an awful lot of stuff out there that used 22/44
pins of 0.156" spacing.
Very common. My COSMAC VIP has a pair of those (one for memory, one
for I/O expansion),
and there was a standard RCA CPU board that used it as its off-board bus
connector. There was the STD bus, and I'm sure many more examples from the
1970s and 1980s.
I'm thinking STD bus was more pins, 56 maybe?
--
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