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Overview

1-5

1.3.4 Expansion Slots

The board has three ISA and four PCI expansion slots. The ISA expansion

slots are the black parallel bars on the system board. The PCI slots are those

with white color and are shorter than the ISA slots. There are rows of golden

pins inside each slot that serve as a clutch to secure the contacts of the

expansion board. For information on how to install the expansion boards, see

Chapter 2.

1.3.5 DRAM Sockets

The system board has four 72-pin SIMM sockets that allow you to expand

system memory to a maximum of 512 MB. These sockets accept both single-

density and double-density SIMMs. Chapter 2 tells how to install memory

modules and the different memory configurations available.

1.3.6 Second-level Cache

The AP53 motherboard comes with an onboard 256-KB pipelined-burst

second-level cache. This pipelined-burst cache improves system performance

by shortening the DRAM read prefetch time resulting to a faster data transfer

rate.

1.3.7 Two-channel PCI Mode 4 Enhanced IDE Interface

The AP53 board integrates a two-channel PCI mode 4 enhanced integrated

drive electronics (E-IDE) interface that allows the system to support four

E-IDE devices (including hard disks with more than 528-MB capacity) via two

onboard IDE connectors (see section 1.1). This feature offers users increased

data storage capacity.

Содержание AP53

Страница 1: ...has four single in line memory module SIMM sockets that allow memory expansion up to a maximum of 512 MB One main feature of AP53 is the green power management function that extends energy conservatio...

Страница 2: ...arallel port connector 17 Keyboard controller 5 Primary IDE connector 18 BIOS 6 Secondary IDE connector 19 Super I O controller 7 Intel 82439 chip 20 PCI slots 8 Pipelined burst cache 21 COM1 connecto...

Страница 3: ...Architecture ISA PCI Expansion Slots Three ISA and four PCI slots Ports One parallel port SPP ECP EPP Two serial ports UART 16C550 Two channel PCI mode 4 IDE ports bus master transfer support One flop...

Страница 4: ...cache It also offers an error checking and correction ECC feature that enables the system to detect as well as correct the DRAM errors The Intel 82439 that comes in a unique ball grid array BGA packa...

Страница 5: ...accept both single density and double density SIMMs Chapter 2 tells how to install memory modules and the different memory configurations available 1 3 6 Second level Cache The AP53 motherboard comes...

Страница 6: ...floppy disk drives with 720 KB 1 44 MB or 2 88 MB format 5 25 inch floppy disk drives with 360 KB 1 2 MB format 1 3 9 Keyboard Connector The onboard keyboard connector allows you to connect any AT com...