[Coco] 26-3022 disk interface question

[Al Hartman]

Even if the controller i working, if your Coco only has Color BASIC, the 
Disk BASIC will not be recognized. You need Extended Color BASIC for 
Disk BASIC to work.


-[ Al ]-

On Wed, Jun 10, 2015 at 08:38 PM, AQ Cerutti wrote:

> Correction, I don't think I am seeing the 'extended basic' just color 
> basic
> 1.2 so my suspicions are probably correct that one or more chips in 
> this
> interface have probably given up the ghost. Thanks again.
>
> On Wed, Jun 10, 2015 at 5:35 PM, AQ Cerutti  wrote:
>
>> 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 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!
>>>>
>>>>
>>> --
>>> Coco mailing list
>>> Coco at maltedmedia.com
>>> https://pairlist5.pair.net/mailman/listinfo/coco
>>>
>>
>>
>
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