[Coco] 68764/68766 EPROMs

[Kandur]

Very professional looking. How much are these?

Kandur

Monday, October 5, 2015, 5:20:03 PM, you wrote:
> Hey guys,



> motherboards and F boards, even D boards (barely).

> Simple, cheap ECB ROM replacement for these machines.

> - Ed

> <https://drive.google.com/open?id=0B1sgl615FlGnUDRsa0J2ZVZwYkU
> <https://drive.google.com/open?id=0B1sgl615FlGnUDRsa0J2ZVZwYkU>>
> <https://drive.google.com/open?id=0B1sgl615FlGnN0p3YTZxd0NtUEk
> <https://drive.google.com/open?id=0B1sgl615FlGnN0p3YTZxd0NtUEk>>
> <https://drive.google.com/open?id=0B1sgl615FlGnRHVEMEhMcHlqSUE
> <https://drive.google.com/open?id=0B1sgl615FlGnRHVEMEhMcHlqSUE>>
> <https://drive.google.com/open?id=0B1sgl615FlGneGNOQTNNOTB4RVU
> <https://drive.google.com/open?id=0B1sgl615FlGneGNOQTNNOTB4RVU>>


>> On Sep 21, 2015, at 7:00 PM, Al Hartman <alhartman6 at optonline.net> wrote:

>> Very cool!

>> My burners will handle 68766 EPROMS, but being able to use a 2764 will help lots of folks.

>> Thanks for doing this!

>> -[ Al ]-

>> -----Original Message----- From: Zippster

>> I just started drawing an adapter up a few minutes ago.

>> I have quite a few CoCos that could use an ECB, so it’s something I’ve been
>> intending to do anyway.

>> I’ll should have files off to OSH Park tonight or tomorrow, there’s not much to an
>> adapter like this.

>> - Ed



>>> On Sep 21, 2015, at 5:53 PM, Al Hartman <alhartman6 at optonline.net> wrote:

>>> This is not for a disk controller. Ron needs an Extended BASIC ROM for a Coco he bought. I no longer have any masked ROMs, and offered to burn him one if he could get me the blank EPROMS.

>>> But a 2764 with an adapter will cost as much as that 68766 for $18.00, unless Ron can wire one up himself.

>>> Clearance isn't a problem for an ECB ROM.

>>> -[ Al ]-

>>> -----Original Message----- From: Arthur Flexser


>>> by having a 28-pin 2764 or 27128 EPROM in a 24-pin disk controller socket
>>> with pins hanging off the end and other pins bent outward to not plug in,


>>> Art

>>> On Mon, Sep 21, 2015 at 6:33 PM, Arthur Flexser <flexser at fiu.edu> wrote:

>>>> There have been various such adapters in the CoCo and non-CoCo markets. I

>>>> one, though it is somewhat more expensive than those sold by others. There
>>>> is not quite enough clearance for most adapters in the Tandy disk
>>>> controllers--some have tried cutting a hole in the plastic cover, or just
>>>> living with the cover not quite being able to snap shut (the screw will
>>>> keep the cover from coming off, and the controller can still be inserted in



>>>> greatly magnified if you want to piggyback a SmartWatch real-time clock

>>>> method there in my own CoCo system.)

>>>> A consideration that also exists is that it may be harder to find an EPROM
>>>> programmer capable of programming the 6876x series than for the 27xx EPROMs.

>>>> Art


>>>> On Mon, Sep 21, 2015 at 6:14 PM, Mark J. Blair <nf6x at nf6x.net> wrote:

>>>>> Would it be more practical to make an adapter to plug in more common 27xx
>>>>> series EPROMs? I don't recall how much physical clearance is in there.

>>>>> --
>>>>> Mark J. Blair, NF6X <nf6x at nf6x.net>
>>>>> http://www.nf6x.net/


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





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