[Coco] CoCoSDC / SDC-DOS file corruption for RS-DOS?

Nick Marentes nickma at optusnet.com.au
Wed Feb 8 13:23:13 EST 2017

On 7/02/2017 7:02 AM, Darren A wrote:
> On Mon, Feb 6, 2017 at 12:00 PM, Nick Marentes <nickma at optusnet.com.au>
> wrote:
>> The SDC can corrupt when writing in double clock speed.... just like a
>> real disk controller to floppies.
>> Nick
> That should not happen, and this the first report I have seen of such an
> issue.  If you can provide specific details of any situation that causes
> corruption, please report it to me so I can investigate.
> Use the gmail address from the header of this posting.  Please include as
> much information as possible, including CoCo model, 6809 or 6309, MPI or no
> MPI, version of SDC-DOS, version of MCU firmware, etc..
> - Darren

Problem solved thanks to the help of Darren and Guillaume.

My CoCo-SDC would not work properly at high clock speed and I found that 
by removing the socketed chips (CPLD's) and reseating them, my problem 

Everything is working perfectly now.


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