[Coco] rom swap with eprom?

[Steve C.]

It didn't quite go down as planned, I put HDB-DOS at 0000 then tested the
cart, when it didn't work I thought maybe I didn't quite get the MSB
address wiring, so I put another copy of HDB-DOS at 4000. When that didn't
work, I realized that 4000 is halfway through a 256 rom, and the Commodore
page talked about a 128 rom, so I then put another HDB-DOS copy at 2000.

When that didn't work, and I'd rechecked all of my wiring, I flowed a layer
of solder onto the card-edge pins, after a couple of no-go's, it began to
work relatively consistently once the pins had "cleaned themselves" from a
few insertions.

On Sat, Jan 16, 2016 at 9:21 PM, Barry Nelson <
barry.nelson at amobiledevice.com> wrote:

> Glad to hear it's working. So tell me, what did you end up putting in the
> cartridge? PS: I often use a pencil eraser to clean old cartridge contacts
> and an old business card to clean the card edge connectors. For stubborn
> card edge connectors I fold 600 grit sand paper over the business card and
> insert that into the connector a couple of times.
>
> > Steve C. towmater at gmail.com
> > Sat Jan 16 21:41:36 EST 2016
> >
> > It worked! It's touchy, I had to flow solder onto the cartridge traces to
> > get the Coco to read the cart, but it seems to be OK once it is running.
> > CoCoSDC? Where can I buy this magical sounding device?
>
>
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