[Coco] Back to the COCO

[Dave Philipsen]

On 1/4/2017 10:02 AM, Brian Blake wrote:
> Bill,
>
> I'm not sure I've ever seen a buffered 'y' cable before - it would 
> only buffer the device being plugged into the CoCo anyhow. The best 
> solution to protect the CoCo, IMHO, would be to install the Cloud9 
> Protector - CPU replacement board that has buffering IC's in place 
> already.

I'm not disagreeing with your premise that the Protector will, indeed, 
protect the CPU but the Protector costs 25 bucks plus shipping and one 
could probably by a lifetime supply of 6809s or 6309s for that price.  
You can find 6809s and 6309s on eBay for 2-5 dollars.  How many times 
have you had a CPU die on you?  Once, twice?

Dave


>
>
> On 1/4/2017 10:35 AM, Bill Gunshannon wrote:
>> Funny you should mention that.  After seeing the comment about the 
>> COCO3 not having the 12v
>> required by the old floppy controller I got to wondering if it might 
>> not be better just running them
>> off of wall warts anyway.
>>
>> If you could, send me a private email with your real mail address and 
>> I will see if I can dig up
>> boxes. (won't fit in even a large flat rate box! :-( )  Feel free to 
>> pull out any chips you suspect
>> and put in sockets.  I will gladly pay for the repairs as long as it 
>> doesn't end out exceeding
>> the actual cost of a new one.  :-)
>>
>> And now another question for you or any of the other serious COCO 
>> hardware guys.
>> The MPI apparently has no more buffering than the cartridge port 
>> itself.  The Glenside
>> IDE has two open ports but also has no form of buffering either.  
>> Just how hard would
>> it be to make something like the infamous Y-cable on a circuit board 
>> only with buffering
>> to protect the COCO from damage?  Getting PC boards is easy anymore 
>> with sites like
>> OSK (I have a handful of the cartridge boards and that is how I my 
>> Drivewire).  Is it
>> reasonable?
>>
>> bill
>> ________________________________________
>> From: Coco [coco-bounces at maltedmedia.com] on behalf of camillus gmail 
>> [camillus.b.58 at gmail.com]
>> Sent: Wednesday, January 4, 2017 10:00 AM
>> To: Bill via Coco
>> Subject: Re: [Coco] Back to the COCO
>>
>> Hi, Bill.
>>
>> That sounds like a plan, and you may even take out the transformer of 
>> the broken one too. I power my coco's with a wall adapter, so I do 
>> not need the transformer.
>>
>> I do need to tell you that the only way to tell if the cpu is dead is 
>> to take it out and replace it with a known good one. The fact that 
>> most of them are soldered directly to the board and removing them 
>> without harm is practically zero. I do have a couple of 6309 which 
>> are pin compatible and function the same. Those cpu's goes around for 
>> 8 to 12 $.
>>
>> If the GIME is shot, then that is an other animal to slaughter. Those 
>> can only be replaced by existing chips from coco3's that are broke 
>> but still have a good GIME.
>>
>> The pia's are still to find on the net.
>>
>> So lets hope it is just a minor problem.
>>
>> cb
>>
>> On 1/4/2017 8:48:11 AM, Bill Gunshannon <bill.gunshannon at hotmail.com> 
>> wrote:
>> On 1/3/17 10:40 PM, camillus gmail wrote:
>>> HI Bill.
>>>
>>> I would love to look at them, the only cost would be the shipping to 
>>> indiana.
>>>
>>> I have two coco3 working, so I can swap out part to test.
>>>
>>> This is my hobby and I do not charge for this.
>>>
>>> Unless of course you consider to let me keep one of the coco's for 
>>> the keyboard and the case?
>>>
>>> Let me know ho this sound for you
>> OK. let's try this....
>>
>> How about if I send you one complete broken COCO3 that would be yours
>> to keep and include in the package two additional broken COCO3 circuit
>> boards for repair (assuming reasonable in both cost and needed work)
>> and return? Not shipping the two additional cases (and the
>> transformer) would reduce the cost. Doable?
>>
>> bill
>>
>>
>>
>>
>> -- 
>> Coco mailing list
>> Coco at maltedmedia.com
>> https://pairlist5.pair.net/mailman/listinfo/coco
>>
>> -- 
>> Coco mailing list
>> Coco at maltedmedia.com
>> https://pairlist5.pair.net/mailman/listinfo/coco
>>
>
>