17 Jun
2006
17 Jun
'06
5:27 a.m.
Okay, I misunderstood--I thought you were doing this with your M20.
Yes, the simplest way is to change the pointer to the DBT, rather than the
DBT contents themselves. Change the table pointer, then do a diskette
reset (AH=00) to make sure that the BIOS routines notice.
Unless you 've got your drive jumpers set wrong, though, a drive should
only step when selected (the motor state doesn't matter--most drives will
step with the motor off or on).
I'm assuming that you're running in real-mode DOS, not trying to run under
a virtualized DOS command prompt session in Windoze. Starting with W95
OSR2, Windows uses its own floppy VXD that has its own peculiarities.
Cheers,
Chuck