460 System Board Jumper Settings
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Jumper/
Connector Function Pins Setting
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P1 Speed Select 1 - 2: 25 MHz (50) --
2 - 3: 33 MHz (66)
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P2 Processor Upgrade 1 - 2: PQFP Socket not used.
Socket Select 2 - 3: PGA Socket used.
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P3 - P5 Processor Select: --
ODPR
486SX (PQFP) P3: Pins 1 - 2
486DX P4: Pins 1 - 2
486DX2 P5: Pins 1 - 2
ODP
487SX P3: Pins 1 - 2
OverDrive P4: Pins 1 - 2
P5: Pins 2 - 3
486SX (PGA) P3: Pins 2 - 3
P4: Pins 2 - 3
P5: Pins 3 - 4
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P6 Password Erase -- Remove and replace
jumper to clear
password.
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P7 External Modem ROM 1 - 2 Internal --
Enable (if P7 is 2 - 3 External
installed)
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J16 Replacement -- Use 4.5v alkaline
battery connector computer battery.
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