PB450 System Overview

Battery

3.0V DC Lithium soldered on motherboard

BIOS

128 KB - Phoenix Flash BIOS V1.1A Latest

Bus Architecture

ISA based system bus

Cache

Write Back: 8 KB Internal (Level 1) Cache External (Level 2)

CPU

Intel 486 processor

Interfaces

1 X DB-25F Parallel 1 X RS232,DB-9M Serial 15-pin HDF VGA PS/2 Mouse PS/2 Keyboard 15-pin DF AUI 8-pin RJ45 10BaseT 16-pin header BNC LAN Exp 34-pin on board FDD 40-pin IDE HDD 40-pin IDE HDD-LB 26-pin VESA

IRQ Availability

00 Timer Click 01 Keyboard 02 Second 8259A 03 COM2 or COM4 04 COM1 or COM3 05 LPT2 or Sound Card (if present) 06 Floppy Disk 07 LPT1 08 Real-Time Clock 09 Redirected IRQ2 10 Sound Card (if present) 11 (reserved) 12 PS/2 Mouse 13 Math Co-processor (if present) 14 Fixed Disk Controller 15 Secondary Fixed Disk Controller (if present)

Network Certification

To be determined

RAM

4 MB Standard on Motherboard 64 MB Maximum on Motherboard 4 GB Maximum addressable

Speaker

Piezoelectric soldered on motherboard

UART Compatability

Compatible with the 16C550 UART

Video

Built in Cirrus Logic 5428 or 5429