[Coco] eBay 6309 chips

Arthur Flexser flexser at fiu.edu
Sat Apr 19 00:00:43 EDT 2014

The other side of the argument, as I see it:

1.  Unless you're really good at de-soldering and are extremely careful
that all 40 pins have been completely freed before you try to pull the old
chip, you run the risk of tearing a trace with non-destructive removal.  Is
it worth that risk to salvage a 6809 that you're probably never going to
use, having upgraded to 6309s?

2.  6809s may become precious some day, but right now they are available on
eBay for around $5-10 for quantity one, cheaper if you buy several.


On Fri, Apr 18, 2014 at 11:39 PM, Kip Koon <computerdoc at sc.rr.com> wrote:

> Hi Chester!
> How are you going to remove the old 6809 chips from your Cocos?  Are you
> going to desolder them in what I would call a proper manner or are you
> going
> to destroy them by cutting the pins?  I've heard people cut their 6809s out
> to make it easier to desolder the pins left behind which I can certainly
> understand.  I just can't see destroying a perfectly good 6809 chip since
> they are becoming quite precious these days.  I too want to upgrade all my
> Cocos as well.  I just have not been able to perfect my desoldering
> techniques.  The tip on my desoldering iron from Radio Shack is a bit too
> big to perform the job properly.
> I want to put all my 6x09 microprocessors in sockets as well.  Until the
> new
> 6309 microprocessors are tested, then obviously their condition is unknown.
> If the pins on the 6809 are cut and the new 6309 is bad then the Coco is
> down for the count and temporarily out of the picture.  That is a risk I'm
> not willing to take.  Besides, I just don't like destroying fully
> functional
> chips - that is unless they are Fritos Scoops!  ;D
> Please don't take my thoughts in a bad way.  I'm just trying to figure out
> how best to accomplish my upgrades so I guess I'm thinking out loud.
>  That's
> something I do a lot.  I seem to think much better if I think out loud or
> write down my thoughts in letters or emails.   Anyway, the 6809 to 6309
> upgrade situation has been on my mind for quite a while now.  I do hope
> that
> your 6309 upgrades on all your Cocos goes successfully and without any
> intermediate problems.  Take care my friend.
> Kip
> -----Original Message-----
> From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com]
> On
> Behalf Of Chester Patterson
> Sent: Friday, April 18, 2014 8:56 PM
> To: 'CoCoList for Color Computer Enthusiasts'
> Subject: [Coco] eBay 6309 chips
> Hi. I'm going to pop the 6809s on my Cocos and put in 6309s.
> I am looking to buy some 6309 IC's on eBay. The ones I'm looking at are at
> http://www.ebay.com/itm/181103857635
> Is there any experience on the list with this seller/these chips?
> Suggestions? Recommendations?
> Thanks much.
> Chester
> Costa Rica
> Come for the beaches! Stay for the beer!
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