[Coco] Nitros9 boot fails with HDB DOS in rompak

Charlie Pelosi chaspelosi at outlook.com
Fri Oct 11 12:03:58 EDT 2013


Yes. Ken had said in his post that most carts don't have the 1st 3 edge 
connectors and normally the 1st one is CART. I was counting from the wrong 
side assuming the blank two were what he meant buy not having the 
connectors. Not sure if I read that wrong or what.

Anyway, you're right there were three wear marks on the pcb where no edge 
connectors are making the 1st CART. I cut the trace on the top (chip) side 
and it works perfectly.

This is fantastic. An easy way to use a coco3 and DW.
Thanks to all who helped and especially Robert for taking the time to look 
at the pictures and see where I was going wrong.


--------------------------------------------------
From: "Robert Gault" <robert.gault at att.net>
Sent: Friday, October 11, 2013 9:52 AM
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Subject: Re: [Coco] Nitros9 boot fails with HDB DOS in rompak

> Charlie Pelosi wrote:
>><snip>
>> Just to be sure. From reading Ken's post yesterday, If I turn the cart 
>> over so
>> that I am looking at the solder side and the card edge is closest to me, 
>> CART is
>> the 4th in from the left? Q is the one directly underneath it on the chip 
>> side?
>> <snip>
>
> Not so. That is true only on a card with the full 40 trace lines. Most 
> game ROM PAKs don't have all the connectors.
>
> If you look closely at a well used ROM PAK, you can see the scratch marks 
> from the CART port connectors. Include the scratch marks in your count, 
> and you will find the correct connections.
>
> Robert
>
>
>
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