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Chapter 3
Specifications
The American Megatrends Excalibur PCI is a baby AT-size motherboard. The motherboard has an onboard fast IDE
controller on the PCI local bus that supports IDE Modes 0, 1, 2 and 3 with 32-bit read/write, readahead, and write posting.
The motherboard has an I/O Controller that supports floppy drives, serial ports, and a parallel port with ECP and EPP
capabilities.
Motherboard Frequency
The Excalibur PCI motherboard operates at either High or Low speed. High speed is the same as the speed of the
CPU mounted on the motherboard. Low speed is approximately the same speed as that of an 8 MHz IBM® AT. Low
speed is achieved by emulation.
Socketed CPU
The Excalibur PCI Pentium ISA motherboard supports a 60 MHz Pentium CPU.
Internal Cache Memory
The Pentium CPU includes both an 8 KB code cache and an 8 KB write-back data cache. All onboard memory can
be stored in internal cache memory on the CPU.
Chapter 3 Specifications
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