8640 EISA
Family 8640+01 IBM PC Server 300/320 EISA Models
78h6488.exe   320 / 520 EISA Config Disk >133Mhz Version 4.02
62h6806.exe   320 / 520 EISA Config Disk  =/< 133Mhz ver 3.30
m76h4891.exe   EISA Flash BIOS ver 16T3B (For any speed processor)

Micronics Computers, Inc. M54Pe ?



      
      System Board Locations 
      
System Board Connections 
      
W12/W31    Speaker 
W18/W37    Power LED (1-3) 
W24/W38    IDE Hard Drive LED 
W35          CPU Fan Connector 
W36          CPU Fan Connector 
      
J1/J2/J26  Power Supply Connector 
P1 to J1 / P2 to J2 / P3 to J26 
      
J6         Mouse Connector 
J8         Keyboard Connector 
J9         Parallel Port Connector 
J10        Floppy Drive Connector 
J11        Serial Port Comm A 
J12        Serial Port Comm B 
J13        ISA IDE Connector 
               SCSI LED on Option Card 
               SCSI Device Connector (on SCSI Option Card) 
      
      System Board Jumpers 
      
W1         L1 Cache Mode 
     Open = L1 Write-Back (default) 
     Closed = L1 Write-Through 
      
W5         L2 Cache Size 
  Pin 1-2 = 256K (default) 
  Pin 2-3 = 512K 
      
      System Board FRU P/N 06H2173 Jumper settings 
      (Board w/o jumper W27 & W28) 

      +---------------------------------------+
      |CPU speed   | W2     | W6     | W40    |
      | ext/int    |        |        |        |
      |------------+--------+--------+--------|
      |50/75 MHz   |Open    | 2-3    |Closed  |
      |------------+--------+--------+--------|
      |60/90 MHz   |Open    | 1-2    |Open    |
      |------------+--------+--------+--------|
      |66/100 MHz  |Open    | 2-3    |Open    |
      |------------+--------+--------+--------|
      |66/133 MHz  |Closed  | 2-3    |Open    |
      +---------------------------------------+
      
      
      System Board FRU P/N 12J4534 Jumper settings 
      (Board with jumper W27 & W28) 

      +---------------------------------------------------------+
      |CPU speed   | W2     | W6     | W27    | W28    | W40    |
      | ext/int    |        |        |        |        |        |
      |------------+--------+--------+--------+--------+--------|
      |50/75 MHz   |Open    | 2-3    |Open    |Open    |Closed  |
      |------------+--------+--------+--------+--------+--------|
      |60/90 MHz   |Open    | 1-2    |Open    |Open    |Open    |
      |------------+--------+--------+--------+--------+--------|
      |66/100 MHz  |Open    | 2-3    |Open    |Open    |Open    |
      |------------+--------+--------+--------+--------+--------|
      |66/133 MHz  |Closed  | 2-3    |Open    |Open    |Open    |
      |------------+--------+--------+--------+--------+--------|
      |66/166 MHz  |Closed  | 2-3    |Closed  |Closed  |Open    |
      |------------+--------+--------+--------+--------+--------|
      |66/200 MHz  |Open    | 2-3    |Closed  |Closed  |Open    |
      +---------------------------------------------------------+
       
W10        L2 Cache Size 
        Pin 1-2 = 256K  (default) 
        Pin 2-3 = 512K     
W16        Reserved (1-2) 
W17        Reserved (Closed) 
        (Without jumper on W17 -> won't accept BIOS flash ! 
        You will see Error Msg. error 0024: Vpp low Error Detected) 
W20        Monitor Select 
      Open = Monochrome / Closed = Color (default) 
W21        Reserved (Closed) 
        Open = AT style Keyboard 
        Closed = PS/2 style Keyboard/Mouse (default) 
W22        Reserved (Open) 
W23        Reserved (Open) 
W25        ISA IDE IRQ select 
        Pin 1-2 = ISA IDE using IRQ 14 (Primary IDE default) 
        Pin 2-3 = ISA IDE using IRQ 15 Secondary IDE 
W30        Reserved (Open) 
W41        Parity 
        Closed = default 
W11        Jumper is not available 
W42        Closed = Single Processor 
                Open = Dual Processor 

System Board FRU P/N 76H0469 
W11        Reserved (2-3) 
W42        Reserved (Open) 
      
 
 
 
 

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