Chapter 1: Introduction
1-27
1-8 Super I/O
The disk drive adapter functions of the Super I/O chip include a floppy disk
drive controller that is compatible with industry standard 82077/765, a data
separator, write pre-compensation circuitry, decode logic, data rate selec-
tion, a clock generator, drive interface control logic and interrupt and DMA
logic. The wide range of functions integrated onto the Super I/O greatly
reduces the number of components required for interfacing with floppy disk
drives. The Super I/O supports four 360 K, 720 K, 1.2 M, 1.44 M or 2.88 M
disk drives and data transfer rates of 250 Kb/s, 500 Kb/s or 1 Mb/s.
It also provides two high speed serial communication ports (UARTs), one of
which supports serial infrared communication. Each UART includes a 16-
byte send/receive FIFO, a programmable baud rate generator, complete
modem control capability and a processor interrupt system. Both UARTs
provide legacy speed with baud rate of up to 115.2 Kbps as well as an
advanced speed with baud rates of 250 K, 500 K, or 1 Mb/s, which support
higher speed modems.
The Super I/O supports one PC-compatible printer port (SPP), Bi-directional
Printer Port (BPP) , Enhanced Parallel Port (EPP) or Extended Capabilities
Port (ECP). Extension FDD and Extension 2FDD Modes are also available
through the printer port interface pins to allow one or two external floppy
disk drives to be connected.
1-7 Power Supply
As with all computer products, a stable power source is necessary for
proper and reliable operation. It is even more important for Pentium II and III
processors that have high CPU clock rates of 300 MHz and above.
The SUPER P6DBS/P6DBE/P6DBU/P6SBU/P6SBS/P6SBA/P6SBM accommo-
dates ATX power supplies. Although most power supplies generally meet
the specifications required by the CPU, some are inadequate.
It is highly recommended that you use a high quality power supply that
meets ATX power supply Specification 2.01. Additionally, in areas where
noisy power transmission is present, you may choose to install a line filter
to shield the computer from noise. It is recommended that you also install a
power surge protector to help avoid problems caused by power surges.
To Next Page
Loading...
