Chapter 1 System Board - Acer V55 System User Manual

C h a p t e r
1
System Board
The V55 is a high-performance system board with a 64-bit architecture. It
supports the P54C, P55C, Cyrix M1 (P120+, P150+, P166+ - single and dual
voltage), AMD K5 (PR166), and AMD K6 (PR200) CPUs. The system
board utilizes the Peripheral Component Interconnect (PCI) local bus
architecture that maximizes the system performance by enabling high-speed
peripherals to match the speed of the microprocessor with its 120 MB or
132 MB per second transfer rate in burst mode.
Two DRAM banks composed of four 72-pin sockets come with the board to
support single- and double-density SIMMs for a maximum system memory
of 128 MB. The SIMM sockets accommodate both the standard page mode
and extended data output (EDO) SIMMs. An exclusive slot comes with the
board to allow a cache upgrade of up to 512 KB using a pipeline burst cache
module.
The two onboard PCI-enhanced IDE interfaces with a zero-wait state and
16.6 MB per second transfer rate support up to four IDE devices. Onboard I/
O interfaces comprise of two UART 16550 serial ports, a parallel port with
ECP/EPP feature, and PS/2 keyboard and mouse ports. An AT keyboard is
an option.
System Board 1-1