Messages in this thread | | | Date | Mon, 6 Oct 2003 17:49:51 +0200 (MET DST) | From | "Maciej W. Rozycki" <> | Subject | Re: FDC motor left on |
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On Mon, 6 Oct 2003, Richard B. Johnson wrote:
> > This is not a problem to deal with in the kernel - what if there is > > hardware other than a floppy controller at that address? > > In the ix86 architecture (and it is in arch-specific code), there > cannot be anything at this address except a floppy or nothing. > In both cases, you are covered.
Huh? The floppies use ordinary I/O ports at the ISA bus, not the range reserved for motherboard devices as, until quite recently, FDCs used to exist solely as add-on cards (I still have one). Any other ISA device is free to use the port range if it's unused by anything else (e.g. no FDC there). Ditto for IRQ6 -- older cards used to have an option to use this line, only newer ones often do not have it anymore, for unknown reason (i.e. the cost is probably one).
-- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +
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