[Coco] Blank PCB for EPROM-Based Cartridge

[Al Hartman]

Well, if you're willing to sacrifice the Typing Tutor Chip, I'd cut the pins 
of the chip as close to the chip as possible, and then remove each pin. If 
you don't use too hot of an iron, you shouldn't lift traces.

Then, put in a nice machined pin socket.

Another trick is to ADD fresh solder to each pin just before trying to 
remove the solder. I use both a solder sucker, and desoldering braid.

If you do accidentally lift a pad, that can be repaired with a little wire 
jumper to the socket pin afterwards.

Al

-----Original Message----- 
From: billg999 at cs.uofs.edu
Sent: Thursday, September 26, 2013 10:42 AM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Blank PCB for EPROM-Based Cartridge

> I had a pleasant discover when I opened my Typing Tutor game pak:
>
> https://pbs.twimg.com/media/BH1iptFCAAAETg2.jpg:large
>
> Yep, 28-pin EPROM :)
>
> I'm going to put a socket and use as eprom-pak.
>

I was hoping to do that with a number of the old carts I have
but attempts to remove the old chip usually results in some
of the lans lifting making the card unusable.  I suspect they
were made as cheaply as possible and there was never any thought
to re-purposing of them in the future.  :-) or in my case :-(

I am considering striping the boards and just running little
pieces of wirewrap wire between an EPROM Socket and the fingers.

But new boards would eliminate the need for that.  :-)

bill



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