American Megatrends Atlas PCI-II, User Manual

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Chapter 1 Hardware Installation 1
1 Hardware Installation
Overview
The American Megatrends Atlas PCI-II Pentium
ISA motherboard features include:
•
support for an Intel Pentium 3.3V CPU
operating at 75, 90, 100, 120, 133, 150, 166, or
200 MHz,
•
support for up to 256 MB of system memory,
•
parity checking for system memory,
•
interleaved memory,
•
PCI local bus throughput of 132 megabytes per
second,
•
four ISA expansion slots, and
•
four PCI expansion slots.
The motherboard conforms to the PCI Version 2.0
specification. The PCI slots are automatically
configured by the AMIBIOS. The PCI slots operate
synchronously with the CPU clock, as follows:
CPU External Clock Frequency PCI Expansion Slot Frequency
66 MHz 33 MHz
60 MHz 30 MHz
50 MHz 25 MHz
Onboard I/O The Atlas PCI-II Pentium ISA motherboard
includes:
•
two 40-pin IDE connectors that support up to four
IDE drives,
•
the onboard I/O connectors are on the PCI local bus,
•
a 34-pin floppy drive connector,
•
two 10-pin serial port connectors,
•
a 26-pin parallel port connector,
•
a keyboard miniDIN connector, and
•
a 10-pin berg mouse connector.