Packard Bell 850 M/Board

There are two significantly different revisions of the 850 motherboard. You will need to check the version number sticker on the Board for the one you have (this sticker is normally between the SIS 5598 chip and Jumper J24).

Revision B

850b board diagram

Item   DescriptionItem   Description
AESS 1869 3D Audio ChipsetRSiS 5598 PCI/ISA/VGA Controller Chipset
BPCI SlotsSPrimary IDE Connector
CModem In connector (J10)TSecondary IDE Connector
DCD Audio In connector (J9)UFront Side USB Interface Connector
ERear PortsVBattery
F72-pin SIMM SlotsWExternal Speaker Connector (J33)
GPrimary Power ConnectorXClear CMOS Jumper (JP19)
HCPU/Bus Speed Jumpers (JP1, JP2, JP3)YFront Panel Connector (J25)
JVGA Select Jumper (JP4)ZCMOS ROM (U11)
KCPU Socket 7AAFlash BIOS (U10)
LCPU Fan Power Connector (J24)BBWake-On-LAN Header (J20)
MCPU Core Voltage Selection Jumpers (JP8, JP9, JP10, JP11)    CCISA Slots
NCPU I/O Voltage Selection Jumpers (JP5, JP6)DDPiezo Speaker
PCPU Clock Selection Jumpers (JP14, JP15, JP16, JP17)
QPCI Clock Selection Jumper (JP18)

Revision D

850d board diagram

ItemDescriptionItemDescription
AESS 1869 3D Audio ChipsetRPrimary IDE Connector
BPCI SlotsSSecondary IDE Connector
CModem In connector (J10)TFront Side USB Interface Connector
DCD Audio In connector (J9)UBattery
ERear PortsVExternal Speaker Connector (J33)
F72-pin SIMM SlotsWClear CMOS Jumper (JP19)
GPrimary Power ConnectorXCase Selection Jumper (JP20)
HCPU/Bus Speed Jumpers (JP1, JP2, JP3)YFront Panel Connector (J25)
JVGA Select Jumper (JP4)ZCMOS ROM (U11)
KCPU Socket 7AAFlash BIOS (U10)
LCPU Fan Power Connector (J24)BBWake-On-LAN Header (J20)
MCPU Core Voltage Selection Jumpers (JP8, JP9, JP10, JP11)CCISA Slots
NCPU Clock Selection Jumpers (JP14, JP15, JP16, JP17)DDPiezo Speaker
PPCI Clock Selection Jumper (JP18)
QSiS 5598 PCI/ISA/VGA Controller Chipset

Specification

Jumpers

CPU Multiplier

MultiplerJP1JP2JP3
X1.5/X3.5OFFOFFOFF
X2ONOFFOFF
X2.5ONOFFON
X3OFFOFFON
X4ONONOFF
X4.5ONONON
X5OFFONON

BUS Speed

Bus SpeedJP14JP15JP16
50ONONON
60OFFONON
66.6ONOFFON
75OFFONOFF

CPU Core Voltage

VoltageJP8JP9JP10JP11
1.8VOPENOPENOPENOPEN
2.2VOPENOPENCLOSEDOPEN
2.8VOPENOPENOPENCLOSED
2.9VCLOSEDOPENOPENCLOSED
3.2VOPENOPENCLOSEDCLOSED
3.3VCLOSEDOPENCLOSEDCLOSED
3.5VCLOSEDCLOSEDCLOSEDCLOSED

CPU I/O Voltage (Revision B only)

CPUJP5JP6
3.5 V - Intel P54C, AMD K5, Cyrix 6x86, IDT WinChip1-21-2
3.3 V - Intel P55C (MMX), AMD K6/ K6-2, Cyrix 6x86L/ 6x86MX/ MII2-32-3

Other Jumpers

FunctionLocationJumpersConfiguration
PCI/ CPU Bus Synch.JP181-2
2-3
Asynch. (CPU Bus Speed at 75 MHz)
Synch. (CPU Bus Speed 66.6 MHz or less)
Onboard VideoJP41-2
2-3
Disabled
Enabled
Clear CMOSJP7 (Revision B Only)1-2
2-3
Default (Normal)
Clear CMOS
Clear CMOSJP19 (Revision D Only)1-2
2-3
Default (Normal)
Clear CMOS
Linear Mode SelectJP17Closed
Open
Enabled (Cyrix Only)
Disabled (Non-Cyrix Only)
Case Selection (Revision D Only)JP201-2
2-3
Two-Button Case
One-Button Case

Cache Upgrade

This system has 512 KB Pipeline Burst Cache integrated on the motherboard. The cache is not upgradable.

CPU Upgrades

This motherboard can accommodate the following CPUs:

Click here to view CPU upgrade jumper information.

RAM Upgrades


Video Memory Upgrades

The video memory on this system cannot be upgraded. The video subsystem integrated on this motherboard uses part of the system memory for video memory. The amount used is programmable in the BIOS Setup (ranging from 0.5 MB to 4.0 MB in increments of 0.5 MB).

ESS 1869 Audio

SiS 5598 Video Chipset

Known Issues

Digital Joysticks Will Not Work

Various digital joysticks on the 850 motherboard do not function properly.

Possible symptoms include:

According to Packard Bell, this is normal. They claim that the following joysticks will work on this system.

Device Manager Conflicts On The Hard Disk Controllers

There are conflicts in Device Manager on the Hard Disk controllers. The CD-ROM drive may also not be working in Windows.

Resolution -

System Locks Verifying DMI Pool Data

This error may also occur after adding hardware. Solution is to remove all added Hardware from the system. If error persists, continue with the following:

Video Card Is Listed As Direct 3D Compatible

This is normal. Direct 3D refers to the video card's DirectX capability. This video card does not support hardware 3D acceleration. Some programs that require a hardware 3D accelerator card may not function correctly.

Unable To Upgrade To AMD K6-2 CPU

When upgrading the CPU to an AMD K6-2 with any BIOS version of less than 1.07, the system may have problems. (not POSTing, booting, etc.). To get round this ensure that you've upgraded the BIOS to at least 1.07 before adding AMD K6-2 CPU.