[Coco] Formatting HD floppies w/ modified controller.

[Robert Gault]

That's right Mark. One of the NitrOS-9 users complain of a similar 
problem but when a short piece of code was inserted into the format 
section of rb1773 to force .89Mhz during a format, the problem seemed to 
go away.

As Boisy has said, neither he nor I were able to reproduce the original 
problem on our systems. It is not clear just what hardware variations 
cause the problem. I'm leaning towards the floppy controller but that is 
a guess. Far as I know, no one has reported problems with Disk Basic 
which normally formats at .89MHz.

Mark Marlette wrote:
> Paul,
> 
> You must be in 6309 mode. ???? I can't format as well but in 6809 mode 
> it works fine.
> Robert Gault did some work on this problem and Robert please step in 
> here. I believe that he fixed it by slowing down the coco at certain 
> points in the driver. Not sure... Last night I was setting up a system 
> and did format on the 6309 v030205 system by putting the whole machine 
> in slow mode first. Still collecting data on this.
> 
> Mark
> Cloud-9
> 
> 
> At 10/6/2005 11:01 AM, you wrote:
> 
>> Well, I have been trying to format any
>> 3.5 inch floppies as /D2 and as high-
>> density (let's say 1.31mb). Using rb1773,
>> etc. only let me get as far as 1 or two
>> tracks (watching the LED's) and then quitting
>> displaying "Unit Busy Error" or some such
>> thing. I could read older HD floppies
>> but not format a new one.
>>
>> I got an older hard-drive, off-loaded
>> CC3Disk (the patched one for 512 byte
>> sectors) matching device descriptors,
>> /D0, /D1 and /D2 (this one is HD). Also,
>> Clock, the older one (soft).
>>
>> Made another boot floppy using these
>> different drivers/descriptors and
>> VIOLA! I can now format HD floppies.
>>
>> Hmmm, is there a problem here?
>> [Running v325 NitrOS-9
>> [w/ CC3Disk and Clock]
>>
>> Paul - idezilla
>> idezilla- at -gmail-.-com, too.
>>
>>
>>
>>
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> 
> 
> 
>