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PB 301 Jumpers

Note
1. Indicates default settings.
 
2. Built-in video is 1024 x 768 (256Kb or 512Kb)
 
3. Some motherboards have the game port jumper reversed (1-2 Enabled 2-3 Disabled).
 

Jumper

Function

Description

Jfdc (FDC)

1-2 Primary Address
2-3 Secondary Address

Jhdc (IDE)

1-2 Primary Address
2-3 Secondary Address

Jc13 (COM1/COM3)

1-2 Proprietary Modem in COM1
2-3 Proprietary Modem in COM3

Jc24 (COM2/COM4)

1-2 Serial Port is COM2
2-3 Serial Port is COM4

Jlps (LPT PORT)

1-2 Select LPT1
2-3 Select LPT2

Jlrq (LPT INT.)

1-2 LPT uses IRQ5
2-3 LPT uses IRQ7

Jinlc (INTERLAC.)

In Interlaced Monitor
Out Non-interlaced Monitor

Jmrq (MOUSE PRT)

In Mouse Port Enabled
Out Mouse Port Disabled

Jvgas (VGA PORT)

1-2 Built-in VGA Enabled
2-3 Built-in VGA Disabled

Jgams (GAME PORT)

1-2 Disabled
2-3 Enabled

Jvd (DISPLAY)

1-2 Monochrome
2-3 Color Mode

Jpip (PIPELINE)

In Pipelined 80386SX
Out Non-pipelined

Jspks (SPEAKER)

1-2 Internal Enabled
2-3 External Enabled

Jbts (BATTERY)

In Internal Enabled
Out External Enabled