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Chapter
Features
1
The AP55CS is a Pentium ® -based system board that utilizes the
PCI/ISA architecture. It has three ISA-AT and three PCI slots for
future expansion.
It also has four 72-pin single in-line memory
modules (SIMM) sockets that accept both Fast Page mode and EDO
type DRAMs, and expand system memory to a maximum of 128 MB.
The onboard 256-KB pipelined-burst cache memory supports write-
back and write-through modes.
The system board integrates the SiS application-specific integrated
circuit (ASIC) chipsets that enable the System Management Mode
(SMM) function of the Pentium chip. This function enables the board
to support the Dark Green Power Management feature that conforms
to the U.S. Environmental Protection Agency (EPA) Energy Star
standards.
A super I/O controller, a two-channel PCI mode 4 enhanced IDE and
a VGA controller are also incorporated in the motherboard to further
enhance system performance. The onboard VGA controller features
the shared-memory buffer architecture and functions not only as a
graphics accelerator, but also as a video accelerator. It allows a
maximum display resolution of 1280 x 1024, 256 colors, non-
interlaced.
The AP55CS board measures 220 mm x 280 mm, a size that easily
fits most housings.
User's Guide
1-1
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