Re: Chip clip adapter for 9000

Very good points...

--James Bright
www.QuarterArcade.com
Restored Arcade Games for your Home

----- Original Message -----
From: "Paul Swan" <pswan@lsil.com>
To: <techtoolslist@www.flippers.com>
Sent: Tuesday, April 01, 2003 3:55 PM
Subject: Re: Chip clip adapter for 9000

>
> Hi James,
>
> Working or not, I always cut out soldered CPU's and toss them. They are
> cheap and easy to get so I don't really care that much.
>
> Clip over and...
>
> 1) ...you'll need to make sure the 20 year old CPU pins are clean to get
> a good contact.
>
> 2) ...you may have to cut tracks/lift pins/set jumpers etc. to make sure
> CPU is WHOLLY disabled. Some CPU's cannot be wholly disabled (all pins
> floating).
>
> 3) ...if you get a bus fault you may have to pull the CPU anyway.
>
> 4) ...you have twice the capacitive & resistive load on all the CPU
> pins, particularly clock pins, and are hoping the original design was a
> good one :-)
>
> Is all this added uncertainty worth 10 mins with pin cutters and a nice
> new socket with a nice new known good CPU in it?
>
> Regards,
>
> Paul.
>
> > James Bright wrote:
> >
> >
> > Are the clip adapters for the 9000 series pods still around? If I
> > remember correctly, Gottlieb soldered in the CPUs in the sys80 CPU
> > boards. I'm going to start working on some in the next few weeks. Just
> > wondering how hard they are to find and if people have used them with
> > any success. I suppose I could desolder the CPU, but if it's working,
> > I'd rather not.
> >
> > JB
> >
> > --James Bright
> > www.QuarterArcade.com
> > Restored Arcade Games for your Home
>
Received on Tue Apr 01 13:52:06 2003