Direct I/O to device on PCI card

From: arizvi (spamtrap_at_crayne.org)
Date: 03/07/05 

Date: Mon, 7 Mar 2005 21:25:40 +0000 (UTC)

Hi,

I am writing a program for direct I/O access to a hard drive in DOS. I
am able to read/write to the hard drive as long as it is connected
directly to the motherboard (which I believe is the ISA bus) using IO
addresses 0x1F0 and 0x170. However, if I attach the drive through a PCI
card, I am not able to address the drive.
What are the right addresses for accessing the device on a PCI card? Is
programming for the PCI bus different from the programming I am used
to( due to difference in architecture of the PCI bus) .. my question
here is if I can program a PCI device using the normal IO port
addresses as before??

Thanks
Ahmad

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