Re: for information: protoboard

From: Ethan Dicks <ethan.dicks_at_gmail.com>
Date: Thu, 24 Oct 2013 15:42:27 -0400
Message-ID: <CAALmimmXFc1QRP1e8_r09pgd+6SXSoEQqk=E=+p0JQY7kn6s_Q@mail.gmail.com>
On Thu, Oct 24, 2013 at 2:48 PM, didier derny <didier@aida.org> wrote:
> I was looking for a proto board for Apple 1
> Apparently the connector on the Vic20 and Apple 1  are similar.
>
> (I donít have a Vic 20 so I canít confirm)
>
> http://www.alliedelec.com/images/products/datasheets/bm/VECTOR_ELECTRONICS_TECH/70219604.pdf

Boards and connectors with 22/44 fingers @ 0.156" Centers are
incredibly common in 1970s and early
1980s equipment.  Yes.  That board will fit in a VIC-20 (as well as an
RCA VIP and is the same kind of
edge connector on a KIM-1, AIM-65, and SYM-1, and many more).

We used to be able to buy boards resembling that one at Radio Shack.
They were about $3.50 (but not
as nice - no gold pins, no plated-through holes, but cheap!) in 1984.

There is no standard on these, BTW - every vendor ran power and
signals to whatever pins were
convenient.  It's *common* for +5V and GND to be on the outermost
pins, but that's not universal.
Something to keep in mind when holding a random 44-pin board or
unmarked cartridge and
wondering what it goes to.  Start by labelling the power and seeing
what vendor uses that
arrangement.

It sounds like you plan to make a new expansion circuit.  That board
appears to be a good one
to work with.  Vector made quality products.

-ethan

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Received on 2013-10-24 20:02:13

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