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    Intel Math CoProcessor Installation and Configuration Notes: C-D

    Contents:

    • COMPAQ DESKTOP SYSTEMS - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES: DOCUMENT 3026
    • COMPAQ PORTABLE SYSTEMS - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES
    • C - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES
    • D - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES
    
    

    COMPAQ DESKTOP SYSTEMS - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES: DOCUMENT 3026

    
       *When installing a math coprocessor in any Compaq system, you must run a
    
       SETUP or SYSTEM CONFIGURATION diskette to configure the system for a
    
       math coprocessor. Failure to do so results in a 702 ERROR at bootup.
    
    
    
         COMPAQ PROLINIA 4/25s
    
            This system uses the Intel OVERDRIVE Processor, part # DX2ODP50 and
    
            the Intel487 SX. Below are the jumper settings  for ProLinea 4/25s.
    
            [Note: "Local bus" system boards can be identified by the presence
    
            of jumpers P7, P8 and P11.  "PQFP" system boards can be identified
    
            by the presence of jumper P11]
    
    
    
                             i486(TM)              i487SX
    
                             DX or      i486SX(TM) i486SX(TM) or
    
       System       Jumper   i486DX2    (PQFP)     (PGA)      OverDrive(R)
    
                             CPU        CPU        CPU        processor
    
    
    
       Original     P1       1-2                   2-3        1-2
    
       Boards       P2       2-3                   1-2        2-3
    
       2670         P3       1-2                   OPEN       2-3
    
    
    
       "PQFP"       P1       1-2        1-2        2-3        1-2
    
       Boards       P2       2-3        1-2        2-3        2-3
    
       2888         P3       1-2        3-4        3-4        2-3
    
                    P11      2-3        1-2        2-3        2-3
    
    
    
       "Local bus"  P9       1-2        1-2        2-3        1-2
    
       Boards       P10      2-3        1-2        1-2        2-3
    
                    P11      1-2        3-4        3-4        2-3
    
                    P7       2-3        1-2        2-3        2-3
    
    
    
       Also, on local bus systems boards, P8 can be used to select between 25
    
       and 33 MHz system clock speeds:
    
    
    
       Processor Speed     33 or 66 MHz   25 or 50 MHz
    
       P8 switch position  1-2  2-3
    
    
    
           *Note that 486/50-based systems can be upgraded too with the ODPR,
    
            but not with ODP.
    
    
    
            Math             Additional Notes
    
            Coprocessor
    
    
    
         DESKPRO 286E        80287-8        Jumper E11, pins 1-2
    
                             287XL          Jumper E11, pins 2-3
    
    
    
         DESKPRO 386/16      80287-6        Switch 2-ON, 3-ON,  7-ON
    
                             80287-8        Switch 2-ON, 3-OFF, 7-ON
    
                             Intel387DX-16  Switch 2-ON, 3-OFF, 7-OFF*
    
    
    
            A problem was reported where the Intel diagnostics would not
    
            recognize the MCP. The conflict was found to be with the installed
    
            Hercules Graphics card. Changing DIP SW 1 #6 from OFF to ON
    
    
    
            remedied the situation.
    
    
    
         DESKPRO 386/20      Intel387 DX    Set switch 2 on switch block
    
                                             1 to ON
    
    
    
         DESKPRO 386/25i     Intel387 DX    Switch 2-ON
    
    
    
            Computers with a revision "L" system board or earlier (serial
    
            number 4847AR2B0001 or earlier) may see errors while using Lotus
    
            Symphony. Compaq Advanced Diagnostics ver 6.07 can test for this
    
            problem.  This information is contained in Compaq Service Bulletin
    
            079 dated December 15, 1988.
    
    
    
         DESKPRO 386S        Intel387 SX    Switch-block 1, Switch 2-ON
    
    
    
    

    COMPAQ PORTABLE SYSTEMS - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES

    
         PORTABLE            8087           Switch block 1, Switch 2 OFF
    
    
    
         PORTABLE 386        Intel387 DX    Jumper E20, pins 1-2 
    
            The math coprocessor socket is located under a "cage" in a corner
    
            of the system board.
    
    
    
    

    C - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES

    
         COMPUADD
    
    
    
         810                           8087-1
    
            This system uses an NEC V20 Microprocessor; Intel cannot guarantee
    
            compatibility with non-Intel microprocessors.  Contact the your
    
            computer's manufacturer for more math coprocessor compatibility
    
            information.
    
    
    
         210            287XL          Jumper J29, pins 1-2
    
                        80287-8        Jumper J29, pins 2-3
    
    
    
         212            287XL          Jumper J29, pins 1-2
    
                        80287-8        Jumper J29, pins 2-3
    
    
    
         216            287XL          Jumper J1: OPEN, J2: 2-3, J3: 2-3
    
    
    
         220            287XL          Jumper J1: OPEN, J2: 2-3, J3: 2-3
    
    
    
         386/16         80287-8        Switch 2-ON, Switch 3-OFF
    
                        Intel387 DX    Requires adapter card and cable. To
    
            install the adapter card, remove the 386DX chip, then plug the
    
            386DX and the Intel387 DX into the adapter card.  Plug the adapter
    
            card into the 386DX socket and plug the cable into socket U25
    
            (under the hard drive).  Remove the 287 plug, if present, from the
    
            287 socket.
    
    
    
         386/20         Intel387 DX    Jumper J12: OPEN, J13: CLOSED
    
    
    
         386/25         Intel387 DX    Jumper J12: OPEN, J13: CLOSED
    
    
    
         CORDATA
    
    
    
         CS 40            8087-2       Switch-block 1, Switch 2-OFF 
    
    
    
         PC 325 & 400     8087         Switch-block 1, Switch 1-ON 
    
    
    
         PORTABLE PC 325  8087         Switch-block 1, Switch 1-ON 
    
    
    
         PORTABLE PC 400  8087         Switch-block 1, Switch 1-ON 
    
    
    
         CS 5000/16       Intel387 DX  Install jumpers JU6, JU13: 1-2,
    
                                       run CMOS setup
    
    
    
         CS 5000/20       Intel387 DX  Install jumpers JU6, JU13: 2-3,
    
                                       run CMOS setup
    
    
    
    

    D - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES

    
       Datavue
    
    
    
         25 SERIES PHASE II       8087      Switch-block 1, Switch 4 OFF
    
    
    
         Snap 1+1                 8087-1    Enable thru CMOS*
    
    
    
         Spark                    8087-1    Enable thru CMOS*
    
            *To enable the math coprocessor on the SPARK and SNAP systems, run
    
            CMOS Setup by pressing the R key twice within 3 seconds of  the
    
            beep while booting.
    
    
    
       DELL
    
    
    
         320SLi & 325SLi   Intel387 SL         Requires Proprietary
    
                                                Card
    
            A safety notice was issued by Dell Corp instructing owners of these
    
            2 systems to discontinue all use of the systems because a potential
    
            fire hazard exists within the systems. Contact Dell at 800-847-4171
    
            for free repair of these systems.
    
    
    
         DTK
    
    
    
         DLT-2000          Intel387 SX
    
            This system has been recalled by DTK. Contact DTK dealer for more
    
            details.
    
    

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