PB55 Overview

Battery

Tadiran 3.6V Lithium connected at location JP6.

BIOS

128K Phoenix BIOS Rel. D 1.01.07 Phoenix 1.01.17 (latest Rel. F Phoenix 1.01.08 Phoenix 1.01.17 (latest) SETUP <Ctrl>-<Alt>-<Esc>

Bus Architecture

ISA based system bus

Cache

16kb SRAM soldered on motherboard 32kb (2) 8Kbx8 (25ns) in U48 and U53 (optional) When 32k cache is installed on system, the CACHE32.COM program must be run to activate the cache on BIOS versions 1.10.14 and under.

Chipset

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CPU

80386SX-20 MHz Turbo Switch Switchable Switch LED Speed In Amber 8 MHz Out Green 20 MHz 80C387SX-20MHz (optional)

Interfaces

2 DB-9 Serial ports 1 DB-25 Parallel port 1 PS/2 keyboard port 1 PS/2 mouse port 1 Ext. VGA Conn 15 pin on expansion slot 1 FDD Connector 1 HDD Connector

IRQ Availability

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Network Certification

Novell Certified

RAM

2MB standard/16MB maximum Maximum on Motherboard 16 MB Maximum addressable 16 MB Use 256K, 1,or 4MB SIMMs, 80ns. LIM EMS 4.0 Compatible EMS Driver: WD76MM.SYS (on DOS DIAGNOSTICS diskette)

Speaker

Piezoelectric onboard. Ext speaker can attach to JP16

UART

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Video

Paradise Extended VGA Capable of 1024 X 768 @ 16 colors

Video RAM

512K

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