Intel SC450NX - Server Platform - 0 MB RAM, Product Manual

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IDE Controller
IDE is a 16-bit interface for intelligent disk drives with AT
†
disk controller electronics onboard.
The PCI/ISA/IDE Accelerator, called PIIX4E, is a multifunction device on the baseboard that acts
as a PCI-based Fast IDE controller. The device controls:
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PIO and IDE DMA/bus master operations
•
Mode 4 timings
•
Transfer rates up to 22 MB/sec
•
Buffering for PCI/IDE burst transfers
•
Master/slave IDE mode
•
Up to two drives for one IDE channel
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NOTE
18-inch maximum length of IDE cable on each channel: you can connect
an IDE signal cable, up to a maximum of 18 inches, to the IDE connector on
the baseboard. The cable can support two devices, one at the end of the
cable and one six inches from the end.
Keyboard and Mouse
The PS/2-compatible keyboard and mouse connectors are mounted in a single-stacked housing
with the mouse connector over the keyboard. External to the system, they appear as two
connectors.
The user can plug in the keyboard and mouse to either connector before powering up the system.
BIOS detects these and configures the keyboard controller accordingly.
The keyboard controller is functionally compatible with the 8042A microcontroller. The system
can be locked automatically if no keyboard or mouse activity occurs for a predefined length of
time, if specified through the SSU. Once the inactivity (lockout) timer has expired, the keyboard
and mouse do not respond until the previously stored password is entered.