Stepper control strategies

[Peter D. Hipson]

I didn't say they didn't... <g> But to tell when the head is at track zero
the drive pulls the head back to the stop and then some. Then it sets the
track 0 seense output. next time your PC powers up, listen to it. That
noise is *not* a problem, it is just the head resetting itself. (Now, let's
drop this non-GMECM topic.)

At 08:50 AM 9/17/1999 +1000, you wrote:
>Floppy drives have a track 0 sense output that the
>FDD controller processes and returns as a status bit 
>to the driver software. Stepping out beyond track 0
>serves no purpose other than stressing the mechanical
>components. Grinding noises are a sign of a problem,
>either in the software, the FDD circuitry, the FDD
>cable, or perhaps the FDD itself.
>
>Peter D. Hipson wrote:
>Re: GM stepper control strategies
>
>> When you boot your PC, that grinding noise you hear from the diskette drive
>> is the same thing, pull the head back to the stop, then pull back more just
>> to be sure.
>
>regards, Peter Gargano
>
>
Thanks, 
        Peter Hipson (founder, NEHOG)
        1995 White NA Hummer Wagon