[Coco] ADOS 3 Rom Question

[Tim Fadden]

Here it is.
http://www.thecocolounge.com/accessories.htm

I was correct about the size, but wrong about the gold contacts.

Tim


Tim Fadden wrote:
> From what I remember, the latest 501 was in a short case. Also the 
> 502's were gold except for the very last model where the gold was 
> dropped.
> There is a website that shows pictures of all of them, but I don't 
> remember exactly where!  If I find it I will post it.
>
> Tim
> Arthur Flexser wrote:
>> As I recall, the FD-502 is also shorter than the 500 and 501, so doubt
>> there could be such a thing as a 501 inside a 502 case.  Does the
>> FD-502 actually identify itself as such on the case?
>>
>> Art
>>
>> On Thu, Mar 12, 2009 at 8:52 PM, Darren A <mechacoco at gmail.com> wrote:
>>  
>>> Yeah... that doesn't sound like an FD-502.  In addition to having a
>>> 28-pin ROM socket, the 502 (as supplied by Tandy) has the controller
>>> chip soldered directly to the board.  Perhaps he has a 501 inside a
>>> 502 case.  The edge connector contacts are gold on a 501, but not on a
>>> 502.
>>>
>>> Darren
>>>
>>> -----
>>>
>>> On 3/12/09, Arthur Flexser  wrote:
>>>    
>>>> Are you sure that's an FD-502?  According to my notes, the FD-502 is
>>>> the one controller Tandy made that has a 28-pin ROM socket, which
>>>> should therefore be directly compatible with your 28-pin ADOS-3 EPROM
>>>> (though it requires a small modification to enable the upper 8K of ROM
>>>> space to accommodate Extended ADOS-3.)  I suspect you actually have an
>>>> FD-500 or FD-501.
>>>>
>>>> Art
>>>>
>>>> On Thu, Mar 12, 2009 at 4:44 PM, Derek <dml_68 at yahoo.com> wrote:
>>>>      
>>>>> I just got a 28 pin ADOS 3 ROM chip and would like some help on 
>>>>> installing
>>>>> into an FD-502 Controller if possible. The Controller I have as 2 ROM
>>>>> Sockets the 28 PIN ROM installed says WDC'83 with a chip number 
>>>>> WD1773-ph.
>>>>> The 24 Pin ROM is a Tandy Chip number SCM92128P. When I replaced 
>>>>> the 28
>>>>> PIN ROM with the Ados chip I bought it comes up with the standard 
>>>>> Disk
>>>>> Extended Basic screen. (I put back the original ROM chip and the
>>>>> controller works fine so I did not destroy anything)
>>>>>         
>>> -- 
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>>>
>>>     
>>
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>>
>>   
>
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