[Coco] Extended Basic Upgrade Options

[Daniel Campos]

http://www.ebay.com/itm/MOT-MCM68766C35EID-DIP-B192-8BIT-UV-ERASABLE-PROM-/221576476885


But be advised that is not easy to find a EPROM Programmer for burn those
nowadays.

Daniel

2015-04-07 13:36 GMT-03:00 Dave Philipsen <dave at davebiz.com>:

> 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
>>>
>>>
>>>
>>
>>
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
>