[Coco] CoCo3 FPGA project analog boards

David Ladd davidwladd at gmail.com
Tue Apr 19 00:38:52 EDT 2016


Ed, that actually sounds like a nice idea there :D Now I need to order a
DE1 and get the RAM chip replaced on it :)

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|David Ladd|
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On Mon, Apr 18, 2016 at 7:25 PM, Zippster <zippster278 at gmail.com> wrote:

> Dave, I’ve thought a bit about how to best do this, and I think this way
> will make for
> a nice installation, and finished result.
>
> To install the board, you’ll remove your plexiglass top, plug the analog
> board in,
> and then with some additional hardware supplied with the board (standoffs,
> nylon
> washers, screws, etc), you’ll reattach the plexiglass over the DE1/Analog
> board combo.
>
> - Ed
>
>
> > On Apr 18, 2016, at 7:07 PM, David Ladd <davidwladd at gmail.com> wrote:
> >
> > Ed,
> > Personally what ever makes these as easy to fit on the DE1 as best as
> > possible to give us best results and reliability I am ok with :) plus the
> > graphic looks cool too :)
> >
> > On Monday, April 18, 2016, Zippster <zippster278 at gmail.com> wrote:
> >
> >> I think I have the revisions to the board pretty well done.   Mostly
> board
> >> layout
> >> and routing changes, different DIN connectors, etc.  I replaced the
> >> prototyping area
> >> with a header for an optional plug in board, which includes 8 GPIOs from
> >> the FPGA,
> >> +3.3v and +5v power, and holes for standoffs to secure the optional
> >> board.  I can make
> >> a prototyping PCB to fit if people want that of course, and this way you
> >> won’t have to mod
> >> your analog board directly, and the GPIOs will be there without air
> wires.
> >>
> >> It looked like it needed a graphic of some kind for the silkscreen, so
> for
> >> fun
> >> I drew one up.  :)
> >>
> >> <https://drive.google.com/open?id=0B1sgl615FlGnM0xmZ2NYVnRqcmM <
> >> https://drive.google.com/open?id=0B1sgl615FlGnM0xmZ2NYVnRqcmM>>
> >> <https://drive.google.com/open?id=0B1sgl615FlGnd0NNOTU1Q3FLcW8 <
> >> https://drive.google.com/open?id=0B1sgl615FlGnd0NNOTU1Q3FLcW8>>
> >>
> >> - Ed
> >>
> >>
> >>
> >>
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