[Coco] POKEd floppy access

[Robert Gault]

No, there is only the DOS1.0 and 1.1 which are not Coco specific.

There are two timed intervals that are critical. The first is the wait for 
the drive to spin up. The second is the wait after issuing a command to the 
controller before attempting to read the status or transfer data. These 
must be a certain amount of time based on the Western Digital specs.

When you change the clock speed on the Coco from .89MHz to 1.78MHz the 
intervals referred to above decrease by half. If you do not adjust the wait 
intervals, disk I/O may fail.

Neil Morrison wrote:
> 
> Perhaps this was a fix for the Coco 3, done by R/S? Didn't that run 
> faster than a 2?
> 
> Neil
> 
> ----- Original Message ----- From: "Diego Barizo" <diegoba at adinet.com.uy>
> 
> 
>> I've always thought that while in double speed, disk access was not 
>> possible, or at least, not reliable.
>> But while writing some programs, I often forget to speed down, and 
>> never had any problems because of that.
>> Do I have some hacked setup, or  may be it works better with some 
>> hardware?
>> I have a CoCo3/FD-502/DSDD drives...
>> Any clues?
>>
>> Thanks
>> Diego
> 
> 
>