[Coco] high density floppy controller mods

Mark Marlette mark at cloud9tech.com
Wed Aug 2 12:42:02 EDT 2006


The 3029 had both hardware and software control. Mine also senses the 
disk and places the controller in the correct mode on the 3.5" DD/HD 

The 3029 is quite a hack, almost like another controller! :)

Good luck!


Quoting Mike Pepe <lamune at doki-doki.net>:

> Mark Marlette wrote:
>> Mike,
>> Is this the mod that Robert Brose of our Twin Cities Color Computer 
>> Group designed over ten years ago??? Or are you doing your own? 
>> Robert's mod is up on RTSI.
>> I have been running the HD modified 3029 controller and it does work 
>> under NitrOS-9 with the proper descriptors. PCDOS even works and 
>> that is my transfer method to/from the PC.
>> I added a line on the interface cable to send the density hole to 
>> automatic place the controller in the right clock speed based upon 
>> the sensor's output.
>> Mark
> No, that mod is on the analog 3029 controller. This is on the 3129 
> which is almost totally digital.
> So, this is something new. Last I remember that mod had a switch to 
> select density. I want this to be software controlled.
> -Mike
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