[Coco] 128K/256K EEPROM Cartridge board

Gustavo Ranaur Schoenaker ranaur at ranaur.net
Thu Mar 5 20:33:19 EST 2015


Any Followup about this project? Looks promising.

On Sun, Jan 25, 2015 at 9:36 PM, Chad H <chadbh74 at hotmail.com> wrote:

> Crap... I was hoping you were making sense of those 2 lines for me.  The
> chips apparently are sent from the factory with the software data protect
> disabled.  You have to send the bytes to enable it.  For our purposes this
> should be one less thing to worry about I would think.  So long as the chip
> isn't used and someone set the bytes?
>
> I may have to jumper the initial batch in a way that will allow me to
> 'patch' those signals to different candidate lines until I get them figured
> out.  Still researching to figure out the best way to go about this...or
> just leave it read only after all.
>
> - Chad
>
> -----Original Message-----
> From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Mark J.
> Blair
> Sent: Sunday, January 25, 2015 4:53 PM
> To: CoCoList Computer Enthusiasts
> Subject: Re: [Coco] 128K/256K EEPROM Cartridge board
>
>
> > On Jan 25, 2015, at 14:49, Darren A <mechacoco at gmail.com> wrote:
> >
> > 1. The CTS* line used for address decoding is not asserted on write
> cycles.
>
> Ah, I was not aware of that. That already invalidates what I suggested in
> my previous email.
>
> --
> Mark J. Blair, NF6X <nf6x at nf6x.net>
> http://www.nf6x.net/
>
>
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>
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