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The Intel driver does not support the following types of device in the
system:
- ATAPI Tape Drives
- ATAPI CD-ROM Changer Drives
- ATAPI DVD-ROM Drives
- ATAPI Writeable CD Drives
- ATA/ATAPI ZIP*, LS-120*, Cartridge, Optical, Removable
Media Drives
- IDE Fixed Disk Drives larger than 8.4GBbytes
During initialization, the driver will auto-identify all the devices
connected to the PIIX IDE interface. Depending on the capabilities
of the devices connected to the system, the driver will initialize the
PIIX IDE interface for bus mastering operation.
Only drives identified as bus master capable will be accessed as a bus
master; all other drives will be accessed in a PIO-only fashion. In
general, bus mastering is possible for ATA/ATAPI devices that support
the following DMA timing modes:
Single Word DMA Mode 2
Multi-Word DMA Mode 1
Multi-Word DMA Mode 2
Ultra DMA Mode 0
Ultra DMA Mode 1
Ultra DMA Mode 2
These devices will be accessed by the driver in either a bus mastering
or a PIO-fashion, depending on the specific transfer conditions.
Devices that do not support the DMA timing modes listed above, or
whose PIO timings are faster than their DMA timings, will be accessed
in a PIO-fashion ONLY.
For more information and a list of tested devices, see the 'Devices
Tested' section of this document.
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8B. APPLICATIONS SUPPORTED BY THE DRIVER
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