Packard Bell 430/440/440T M/Board

430 board diagram

Some PB430/PB440 systems have been shipped with built-in game port (J4), however, the system BIOS does not support it. To disable the game port, remove the J15 jumper. The J15 jumper is located next to the game port.

Specification

Jumpers

JumperDescriptionSettingDesignation
J11Onboard VGA2-3
1-2
Enabled
Disabled
J12Colour/MonochromeClosed
Open
Colour
Mono
J13LPT1 IRQ Select1-2
2-3
IRQ 7
IRQ 5
J14Password ClearOpen
Closed
Normal
Clear Password
J15Game PortClosed
Open
Enabled
Disabled
J17Boot Block Select1-2
2-3
Normal
Boot Block
J22Video IRQ 9 EnableOpen
Closed
Disabled
Enabled
J27Mouse PortClosed
Open
Enabled
Disabled
J39On-Board Speaker2-3
1-2
Enabled
Disabled
J41On-Board Memory DisableOpen
Closed
Disabled
Enabled

Battery

Use a 3.6 Volt lithium battery. Remove the shorting cap on jumper J24. Then attach the battery to connector J28, positive to pin 1, negative to pin 4.

Cache Upgrade

 J30J31J32J33
32kOpen1-21-21-2
128k1-22-32-31-2
512k1-22-32-32-3

CPU Upgrades

JumpersJ23J25J26J40J40J40J34J34J34
Pins1-21-21-21-23-45-61-23-45-6
486SX20InOutOutOutInOutOutOutIn
486SX25OutInInOutInOutOutOutIn
486SX33OutInOutOutInOutOutOutIn
486SX/2-50
486DX-25
486DX/2-50
DX2ODPR50
DX4ODPR75
P24T-62Mhz
OutInInInOutInInOutIn
486DX-33
486DX/2-66
DX2ODPR66
DX4ODPR100
P24T-83Mhz
OutInOutInOutInInOutIn
80487SX-25
DX2ODP50
DX4ODP75
OutInInInOutInOutInOut
80487 SX-33
DX2ODP66
DX4ODP-100
OutInOutInOutInOutInOut

Note - For P24T upgrades (Intel Pentium Overdrive Processor PODP 5V), the BIOS must be updated to ID 21. The current BIOS version appears on the screen immediately after switching on the computer.

Memory Upgrades

Notes -


Speaker

Use a standard 8 ohm, 1/2 watt computer speaker. Move the cap on jumper J39 to pins 2 and 3, and attach the speaker to connector J38, pins 1 and 4.


Video Memory Upgrade

There are two versions of the PB430 motherboard. One has the CL 5424 video chip set and the other has the CL 5428 video chip set.

The best way to establish which video chip is in your computer is by opening the case. A PB430 with a CL 5424 chip will only have one so-called Zip Socket. A PB430 with a CL 5428 chip will have two of these sockets. Another indication is the availability of a game port. The PB430 with the CL 5424 video chip MAY have a game port, the PB430 with the C 5428 does NOT have a gameport.