As a devoted user of Joe Grand's PCB's :> I suggest that you get a ZIF (Zero
Insertion Force) socket for testing your EPROMS before soldering them to a
PCB. You can get ZIF sockets most everywhere, Digi-key is a good place to
start.
Billy
> -----Original Message-----
> From: owner-stella@xxxxxxxxxxx [mailto:owner-stella@xxxxxxxxxxx]On
> Behalf Of Joe Grand
> Sent: Tuesday, July 09, 2002 9:15 PM
> To: stella@xxxxxxxxxxx
> Subject: Re: [stella] J. Grand PCB help--I'm an idiot
>
>
> First of all, the components are aligned with pin 1 being the square pad,
> though you probably knew that. The front of the board for the
> components is
> the side with the "Rev A<cr>J. Grand 2001".
>
> When you plug the board in, the chips should be facing away from you. If
> you have trouble with alignment for some reason, stick it back in
> the cart.
>
> Other things wrong might be cold solder joints or other incorrect
> soldering
> techniques causing loose or no connections (believe me, I've seen some
> REALLY BAD soldering by homebrew people before :), improperly programmed
> EPROM, bad logic gate, etc. There's really not much that can go wrong on
> the board, considering how simple the design is..
>
> Soon (I promise!) I'll have pictures and general assembly instructions on
> my website..
>
> Joe
> jgrand@xxxxxxxxxxxxxx
>
>
> At 12:54 PM 7/9/2002, you wrote:
> >If I have the PCB facing me, with the narrow (cartridge slot) end at the
> >bottom, and the side that says "Rev A<cr>J. Grand 2001" facing
> me (and the
> >writing therefore on the left side), then I should just drop a 2732 into
> >the upper socket, with pin 1 at the upper right, and a 7404 into the
> >lower socket, again with pin 1 at the upper right, correct?
> >
> >And then when I plug it into the Atari, the chips should be facing the
> >ceiling. Is that correct?
> >
> >Because if so, it ain't working. Am I missing something really obvious?
> >
> >Adam
>
>
> ------------------------------------------------------------------
> ----------------------------
> Archives (includes files) at http://www.biglist.com/lists/stella/archives/
> Unsub & more at http://www.biglist.com/lists/stella/
>
----------------------------------------------------------------------------------------------
Archives (includes files) at http://www.biglist.com/lists/stella/archives/
Unsub & more at http://www.biglist.com/lists/stella/
