[Coco] Prototype/Breakout Board

Louis Ciotti lciotti1 at gmail.com
Sat Mar 24 20:05:51 EDT 2012


Just starting so ideas/input are welcome.  ave not done much digital 
designs, so I am going to muddle along and learn the hard way here.

I am thinking I may just bring all 40 pins out, but that would mean more 
buffering, but not sure if all really need buffers.

On 3/24/2012 8:02 PM, Chad H wrote:
> You are designing a small board for mass production that would essentially
> allow us to make our own custom ROM paks?  If that's the case, I love the
> idea.  Are you planning on 8K, 16K, or more?  Bank switchable?
>
> -----Original Message-----
> From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
> Behalf Of Louis Ciotti
> Sent: Saturday, March 24, 2012 6:57 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: [Coco] Prototype/Breakout Board
>
> I am finally getting to working on this, and someone send me an email
> recommending a IC for use on the the address/data lines that was similar to
> the 74LS245, but allow voltage translation.  I must have fatfingered the
> delete button and cannot fine the e-mail  Can you please resent the info.
>
> Now on this what are the thoughts on this?  Right now my thoughts are to
> have a small board that plugs into the cartrige slot, has buffereing, a ROM
> socket, and a 0.1" dual row header to connect a cable to.
>
> of the 40-pins I am planning on breaking-out:
>
> A0-A15
> D0-D7
> 5V
> GND
> CTS*
> Q
> CART*
> R/W*
> RESET
>
> Lou
>
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