[Coco] Extended Basic Upgrade Options

[camillus blockx]

Hi Dave,

I found this on Ebay, makes $1.33 a piece, which is good, most are over $3...

The thing is 50 is a lot, but I would take 5 of you for 1.33 ( + shipping) if that would help. They always come handy, sometimes they can be used as PAL/GAL ( simple logic ).

Hope it helps you, otherwise follow K.Koon's advice...

http://www.ebay.com/itm/50PC-ST-M2732A-2F1-2732A-DIP-24PIN-IC-A236/181594062783?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20131003132420%26meid%3D7c903d0029f144d5925f197b122317a0%26pid%3D100005%26rk%3D2%26rkt%3D6%26sd%3D361262953848&rt=nc

camillus
On 4/7/2015 11:36:44 AM, Dave Philipsen <dave at davebiz.com> wrote:
http://www.ebay.com/itm/MCM68764C-Semiconductor-Electronic-Component-/171739050313?pt=LH_DefaultDomain_3&hash=item27fc71f149

On 4/7/2015 10:59 AM, Joe Grubbs wrote:
> DIP-24 8Kx8s seem to be as rare as hens teeth. I have NOS ones that I'm saving for... whatever. Does anyone know of a decent source for the 24 pin variety or are we stuck with 28s nowadays?
>
>
>> From: computerdoc at sc.rr.com
>> To: coco at maltedmedia.com
>> Date: Tue, 7 Apr 2015 00:12:47 -0400
>> Subject: Re: [Coco] Extended Basic Upgrade Options
>>
>> Hi Don,
>> I have a 24-pin rom/eprom to 28-pin 2764 eprom adapter PCB I designed that could give you the capability of using 28-pin eproms inside your Coco 2. Is there a 26-3027 Coco 2 or is it a 26-3127 Coco 2? If so, I have a 26-3127 I can use to check for layout correctness. I had made it to adapt the 24 pin rom socket in my floppy controllers to accept 28 pin 2764 eproms, but until now I have not needed to use it to adapt rom sockets on CoCo motherboards. I'm on vacation at the moment, but when I get back home Sunday, I'll check it out for you. I can provide the Extended Basic 1.1 rom you need also. I thought you might what to know.
>>
>> Kip Koon
>> computerdoc at sc.rr.com
>> http://www.cocopedia.com/wiki/index.php/Kip_Koon
>>
>>
>
>


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