433 Jumper Settings
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Jumper 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 ODP
486SX (PQFP)
486DX 487SX
486DX2 Overdrive 486SX (PGA)
P3 Pins 1-2 Pins 1-2 Pins 2-3
P4 Pins 1-2 Pins 1-2 Pins 2-3
P5 Pins 1-2 Pins 2-3 Pins 3-4
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P6 Password Erase Remove and replace jumper
P6 to clear password.
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P7 External Modem 1,2 Internal Modem ROM
ROM Enable 2,3 External Modem ROM
(if P7 is
installed)
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J16 Replacement Use only 4.5v Alkaline
Battery Connector Computer Battery
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NOTE: The 486SX (PQFP) is not socketed. The other processors are all PGA
processors that plug into the processor upgrade socket.
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