HP Vectra 500 Series - Manual (Page 50)

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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the PCI Bus
The BIOS uses the auto-detected drive information to select the fastest
configuration supported by each installed IDE drive.
Transfer Rates Versus Modes of Operation
The IDE controller supports 32-bit Windows and DOS I/O transfers (many
IDE controllers use Windows integral IDE driver which only supports 16-bit
I/O transfers). It supports programmed I/O (PIO) modes up to mode 4 and
direct memory access (DMA) modes up to mode 2 (giving a cycle time of
120 ns, and a transfer rate of 16.7 MB per second, in both cases).
The five PIO modes allow the following transfer rates:
Minitower Configuration Connections to Data Cables
One hard disk drive 1. Bootable hard disk drive: Master connector, HDD data cable
Two hard disk drives 1. Bootable hard disk drive:
2. Second hard disk drive: Master connector, HDD data cable
Slave connector, HDD data cable
Three hard disk
drives 1. Bootable hard disk drive:
2. Second hard disk drive:
3. Third hard disk drive: Master connector, HDD data cable
Slave connector, HDD data cable
Master connector, CD-ROM data cable
One hard disk drive
One CD-ROM drive 1. Bootable hard disk drive:
2. CD-ROM drive: Master connector, HDD data cable
Master connector, CD-ROM data cable
Two hard disk drives
One CD-ROM drive
1. Bootable hard disk drive:
2. Second hard disk drive:
3. CD-ROM drive: Master connector, HDD data cable
Slave connector, HDD data cable
Master connector, CD-ROM data cable
Three hard disk
drives
One CD-ROM drive 1. Bootable hard disk drive:
2. Second hard disk drive:
3. Third hard disk drive:
4. CD-ROM drive: Master connector, HDD data cable
Slave connector, HDD data cable
Master connector, CD-ROM data cable
Slave connector, CD-ROM data cable
Two hard disk drives
Two CD-ROM drives
1. Bootable hard disk drive:
2. Second hard disk drive:
3. CD-ROM driver:
4. Second CD-ROM drive: Master connector, HDD data cable
Slave connector, HDD data cable
Master connector, CD-ROM data cable
Slave connector, CD-ROM data cable
Mode 0 1 2 3 4
Cycle time (ns) 600 383 240 180 120
Transfer rate (MBytes/s) 3.33 5.22 8.33 11.1 16.7