[Coco] 26-3022 disk interface question

[AQ Cerutti]

Thank you for your reply Bob, I will have to check the output again but I
think that this is what I am seeing although it appears to be the same as
what I see without the disk controller inserted. So this older style
interface may not show the licensing information as some of the later
interfaces do if I understand correctly.

I have cleaned the card edges with an eraser and they look pretty good. I
also re-seated all of the chips as some of them seemed a bit loose. As to
modification, this may have been modified as one chip seems to have a piece
of masking tape on it with some initials or markings on it. More
investigation needed it seems.

Thanks much,

-Adam Cerutti
Portland, Oregon

On Wed, Jun 10, 2015 at 5:21 PM, Bob Devries <devries.bob at gmail.com> wrote:

> It is my belief that this controller should power up with the banner:
> DISK EXTENDED COLOR BASIC 1.x
>
> If it does not, my first step would be to clean the fingers where they fit
> into the Coco with a PENCIL eraser. Failing that, open the diusk controller
> and ensure that all the chips which are in sockets are properly seated, and
> that the ROM is the correct one. AFAIK it should be a 24-pinROM, *not* an
> EPROM, although if it has been modified, it *may* have a 2764 or 27128 type
> EPROM.
>
> Good luck.
>
> Regards, Bob Devries
> Dalby, QLD, Australia
>
>
> On 11/06/2015 10:14 AM, AQ Cerutti wrote:
>
>> Hi,
>> I recently purchased a color computer disk system with a 26-3022 disk
>> interface and a mini-disk. I purchased this not realizing that it would
>> not
>> work with my Coco 2 without a multi-pak expansion which I do not have as
>> it
>> needs 12v of external power.
>>
>> Examining the package after I received it, I realized that the disk
>> interface had been opened. The screw under the label is exposed.
>> Everything
>> inside the interface looks good but I don't have the means to test the
>> chips and when I plugged the interface into my Coco 2 and powered it on, I
>> did not see anything different on the screen.
>>
>> My question is this:
>> Even if the 26-3022 needs 12v of power, with the interface in the computer
>> should I still be seeing the extended basic screen and licensed from
>> Microsoft information? I'm not which leads me to believe that there may be
>> something wrong with the interface.
>>
>> Can anyone confirm what I should be seeing with a 26-3022 interface in a
>> Coco 2?
>>
>> Thanks for your help!
>>
>>
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