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P/I-P55SP4
ASUS COMPUTER INTERNATIONAL
P/I-P55SP4
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Processor
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Pentium
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Processor Speed
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75/90/100/120/133/150/166MHz
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Chip Set
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SIS
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Max. Onboard DRAM
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512MB
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Cache
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256/512/1024KB
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BIOS
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Award
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Dimensions
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330mm x 218mm
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I/O Options
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Parallel port, serial ports (2), 32-bit PCI slots (4), green PC connector, floppy drive interface, IDE interfaces (2), cache slot, MediaBus slot, infrared connector
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NPU Options
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None
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CONNECTIONS
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Purpose
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Location
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Purpose
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Location
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PS/2 mouse interface
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CN1
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Green PC connector
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J1 pins 14 & 15
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Serial port 2
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CN2
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Turbo switch
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J1 pins 16 & 17
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Serial port 1
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CN3
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Reset switch
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J1 pins 19 & 20
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Parallel port
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CN4
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Green PC connector
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JP1
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Floppy drive interface
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CN5
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Chassis fan power
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JP26
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IDE interface 1
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CN6
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IDE interface LED
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JP27
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IDE interface 2
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CN7
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Infrared connector
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JP31
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Power LED & keylock
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J1 pins 1 - 5
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32-bit PCI slots
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PC1 - PC4
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Speaker
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J1 pins 7 - 10
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MediaBus slot
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SL1
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Turbo LED
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J1 pins 12 & 13
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Cache slot
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SL2
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USER CONFIGURABLE SETTINGS
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Function
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Jumper
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Position
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»
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PS/2 mouse port disabled
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JP5
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pins 1 & 2 closed
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PS/2 mouse port enabled
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JP5
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pins 2 & 3 closed
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»
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Flash BIOS boot block protected
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JP16
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pins 1 & 2 closed
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Flash BIOS boot block programming enabled
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JP16
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pins 2 & 3 closed
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»
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On board I/O enabled
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JP1C
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pins 1 & 2 closed
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On board I/O disabled
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JP1C
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pins 2 & 3 closed
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DRAM CONFIGURATION
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Size
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Bank 0
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Bank 1
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2MB
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(2) 256K x 36
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NONE
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4MB
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(2) 256K x 36
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(2) 256K x 36
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4MB
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(2) 512K x 36
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NONE
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6MB
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(2) 256K x 36
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(2) 512K x 36
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6MB
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(2) 512K x 36
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(2) 256K x 36
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8MB
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(2) 512K x 36
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(2) 512K x 36
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8MB
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(2) 1M x 36
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NONE
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10MB
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(2) 256K x 36
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(2) 1M x 36
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10MB
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(2) 1M x 36
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(2) 256K x 36
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12MB
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(2) 512K x 36
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(2) 1M x 36
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12MB
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(2) 1M x 36
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(2) 512K x 36
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16MB
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(2) 1M x 36
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(2) 1M x 36
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16MB
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(2) 2M x 36
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NONE
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18MB
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(2) 256K x 36
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(2) 2M x 36
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18MB
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(2) 2M x 36
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(2) 256K x 36
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20MB
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(2) 512K x 36
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(2) 2M x 36
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20MB
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(2) 2M x 36
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(2) 512K x 36
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24MB
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(2) 1M x 36
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(2) 2M x 36
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24MB
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(2) 2M x 36
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(2) 1M x 36
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32MB
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(2) 2M x 36
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(2) 2M x 36
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32MB
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(2) 4M x 36
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NONE
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34MB
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(2) 256K x 36
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(2) 4M x 36
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34MB
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(2) 4M x 36
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(2) 256K x 36
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36MB
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(2) 512K x 36
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(2) 4M x 36
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36MB
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(2) 4M x 36
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(2) 512K x 36
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40MB
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(2) 1M x 36
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(2) 4M x 36
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40MB
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(2) 4M x 36
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(2) 1M x 36
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48MB
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(2) 2M x 36
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(2) 4M x 36
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48MB
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(2) 4M x 36
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(2) 2M x 36
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64MB
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(2) 4M x 36
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(2) 4M x 36
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64MB
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(2) 8M x 36
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NONE
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66MB
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(2) 256K x 36
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(2) 8M x 36
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66MB
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(2) 8M x 36
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(2) 256K x 36
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68MB
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(2) 512K x 36
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(2) 8M x 36
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68MB
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(2) 8M x 36
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(2) 512K x 36
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DRAM CONFIGURATION (CON’T)
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Size
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Bank 0
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Bank 1
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72MB
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(2) 1M x 36
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(2) 8M x 36
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72MB
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(2) 8M x 36
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(2) 1M x 36
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80MB
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(2) 2M x 36
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(2) 8M x 36
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80MB
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(2) 8M x 36
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(2) 2M x 36
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96MB
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(2) 4M x 36
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(2) 8M x 36
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96MB
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(2) 8M x 36
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(2) 4M x 36
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128MB
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(2) 8M x 36
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(2) 8M x 36
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128MB
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(2) 16M x 36
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NONE
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130MB
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(2) 256K x 36
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(2) 16M x 36
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130MB
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(2) 16M x 36
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(2) 256K x 36
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132MB
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(2) 512K x 36
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(2) 16M x 36
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132MB
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(2) 16M x 36
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(2) 512K x 36
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136MB
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(2) 1M x 36
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(2) 16M x 36
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136MB
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(2) 16M x 36
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(2) 1M x 36
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144MB
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(2) 2M x 36
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(2) 16M x 36
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144MB
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(2) 16M x 36
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(2) 2M x 36
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160MB
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(2) 4M x 36
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(2) 16M x 36
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160MB
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(2) 16M x 36
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(2) 4M x 36
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192MB
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(2) 8M x 36
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(2) 16M x 36
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192MB
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(2) 16M x 36
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(2) 8M x 36
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256MB
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(2) 16M x 36
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(2) 16M x 36
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256MB
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(2) 32M x 36
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NONE
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258MB
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(2) 256K x 36
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(2) 32M x 36
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258MB
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(2) 32M x 36
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(2) 256K x 36
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260MB
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(2) 512K x 36
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(2) 32M x 36
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260MB
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(2) 32M x 36
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(2) 512K x 36
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264MB
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(2) 1M x 36
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(2) 32M x 36
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264MB
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(2) 32M x 36
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(2) 1M x 36
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272MB
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(2) 2M x 36
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(2) 32M x 36
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272MB
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(2) 32M x 36
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(2) 2M x 36
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288MB
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(2) 4M x 36
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(2) 32M x 36
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288MB
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(2) 32M x 36
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(2) 4M x 36
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320MB
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(2) 8M x 36
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(2) 32M x 36
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320MB
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(2) 32M x 36
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(2) 8M x 36
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384MB
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(2) 16M x 36
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(2) 32M x 36
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384MB
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(2) 32M x 36
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(2) 16M x 36
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512MB
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(2) 32M x 36
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(2) 32M x 36
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CACHE CONFIGURATION
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Size
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Bank 0
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Bank 1
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TAG
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SL2
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256KB
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(4) 32K x 8
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(4) 32K x 8
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(1) 8K or (1) 32K x 8
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Card not installed
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256KB
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NONE
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NONE
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NONE
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Card installed
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512KB
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(4) 64K x 8
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(4) 64K x 8
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(1) 8K or (1) 32K x 8
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Card not installed
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512KB
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NONE
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NONE
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NONE
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Card installed
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1MB
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(4) 128K x 8
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(4) 128K x 8
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(1) 8K or (1) 32K x 8
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Card not installed
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1MB
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NONE
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NONE
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NONE
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Card installed
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CACHE JUMPER CONFIGURATION
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Size
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JP10
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JP11
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256KB
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pins 1 & 2 closed
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pins 1 & 2 closed
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512KB
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pins 2 & 3 closed
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pins 1 & 2 closed
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1MB
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pins 2 & 3 closed
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pins 2 & 3 closed
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CACHE TYPE CONFIGURATION
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Type
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JP6
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JP7
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JP8
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JP9
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3.3v cache
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Open
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Open
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Closed
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Closed
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Mixed mode cache
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Closed
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Closed
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Open
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Open
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CPU SPEED CONFIGURATION
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Speed
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JP12
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JP13
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JP14
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75MHz
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pins 2 & 3 closed
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pins 2 & 3 closed
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pins 1 & 2 closed
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90MHz
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pins 1 & 2 closed
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pins 2 & 3 closed
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pins 1 & 2 closed
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100MHz
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pins 2 & 3 closed
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pins 1 & 2 closed
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pins 1 & 2 closed
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120MHz
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pins 1 & 2 closed
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pins 2 & 3 closed
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pins 1 & 2 closed
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133MHz
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pins 2 & 3 closed
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pins 1 & 2 closed
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pins 1 & 2 closed
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150MHz
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pins 1 & 2 closed
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pins 2 & 3 closed
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pins 1 & 2 closed
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166MHz
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pins 2 & 3 closed
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pins 1 & 2 closed
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pins 1 & 2 closed
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CPU CLOCK SPEED CONFIGURATION
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Speed
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JP20
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JP21
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1.5x
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Open
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Open
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2x
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Open
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Closed
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2.5x
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Closed
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Closed
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3x
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Closed
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Open
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VOLTAGE REGULATOR CONFIGURATION
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Type
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JP22
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JP23
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JP28
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JP29
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STD/VR
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Closed
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Open
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Closed
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Open
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VRE
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Open
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Closed
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Open
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Closed
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VOLTAGE REGULATOR TYPE CONFIGURATION
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Setting
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JP32
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JP33
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JP34
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JP35
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Not installed
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Closed
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Closed
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Closed
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Closed
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Installed
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Open
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Open
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Open
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Open
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Note: The location of the above jumpers are unidentified.
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UART/IR CONFIGURATION
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Speed
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JP1A
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JP1B
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UART2
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pins 1 & 2 closed
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pins 1 & 2 closed
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IR
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pins 2 & 3 closed
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pins 2 & 3 closed
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