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    Intel Math CoProcessor Installation and Configuration Notes: T-Z

    Contents:

    • TANDY - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES: DOCUMENT 3034
    • TOSHIBA - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES
    • T-V - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES
    • Z - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES
    
    

    TANDY - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES: DOCUMENT 3034

    
         4001LX         Install jumper E3-E4.
    
    
    
         4000           80287-10 (not 287XL) *Intel387DX-16 (see note)
    
            Install jumper on E8-E9. This older 16 Mhz Intel386 DX system has a
    
            Weitek socket but has no support for the i387 DX Math Coprocessor.
    
            Use the catalog number located on a sticker on the bottom of the
    
            machine to determine if the system is a model 4000. The number for
    
            a 4000 is 25-5000.
    
    
    
            Certain versions of the Tandy 4000 also have an Intel387 DX socket
    
            and are compatible with the single-speed Intel387DX-16 Math
    
            coprocessor. In this case, there are no jumpers or switches
    
            required to be set.
    
    
    
         4000A                    Intel387 DX 
    
            Install the jumper on prongs E3-E4, located by the math
    
            coprocessor. This is the newer model that has support for the
    
            Intel387 DX on the middle two rows of the WIetek socket. The
    
            catalog number for the 4000A (located on a sticker on the bottom of
    
            the system) is 25-5000A.
    
    
    
         3000NL                   Intel287 XL 
    
            Install a 10 Mhz oscillator Radio Shack part number AXX-7149.
    
            Insert into socket "Y3" to enable the math coprocessor.
    
    
    
         3000 12MHz               Intel287 XL 
    
            Install jumpers E44-E46 and E47-E48 
    
    
    
         3000HD                   Intel287 XL 
    
            Remove dummy plug, then install 287XL into that socket 
    
    
    
         1200                     8087 
    
            This computer uses a specially modified 8087. Call Tandy Technical
    
            Support for more information.
    
    
    
         1000A                    8087         Remove jumper E8 - E9
    
    
    
         1000SX                   8087-2       Remove jumper E3 - E4
    
    
    
    

    TOSHIBA - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES

    
         Toshiba 386SL based notebooks
    
            A conflict with 386MAX and other memory managers may exist with
    
            these systems. Contact Toshiba for details.
    
    
    
         T5200                    Intel387 DX 
    
            Orient the beveled corner of the 387DX next to the gold dot on the
    
            motherboard, by the bevelled corner of the socket. 
    
    
    
         T6400SX                  Intel486 DX (not Intel487 SX) (1) 
    
    
    
         T6400SXC                 Intel486 DX (not Intel487 SX) (1) 
    
    
    
         T4400                    Intel486 DX (not INtel487 SX) (1) 
    
            (1)Toshiba has contracted this upgrade to the company CP PLUS, at
    
            800-274-4277. Refer customers seeking this upgrade to either CP
    
            PLUS or Toshiba Technical Support at 800-999-4273.
    
    
    
    

    T-V - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES

    
         TriStar
    
             386DX-33 or 386/33   Intel387 DX
    
            Set jumpers JP1, JP11 and JP12 to off (shorted).
    
    
    
         UNISYS
    
            800/16 and 800/20     Intel387 DX 
    
            Some 800/16 and 800/20 machines have experienced a problem in
    
            recognizing that the mcp is installed. This problem only surfaces
    
            during initial machine installation.  The work-around is to remove
    
            the mcp and rerun the cmos utility again.  Enable the mcp in CMOS,
    
            save the settings, then power down the system and reinstall the
    
            mcp.
    
    
    
         Wyse
    
    
    
         WY-3116SX                Intel387 SX  Set jumper JP1 pins 1-2
    
    
    
    

    Z - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES

    
         ZENITH
    
    
    
         Z-Note 325L               Intel387 SL 
    
            System may fail diagnostic Conformance test. Call Zenith for BIOS
    
            upgrade v4.2A or more recent.
    
    
    
         Z-Note 325-120           Intel387 SL 
    
            May fail diagnostic Conformance test. Call Zenith for BIOS upgrade.
    
    
    
         Z-Start 433VL ZPD4831    Intel387 SX-33 
    
            The CPU in this system is a CX486 DLC. There was a problem in the
    
            first 200 of these systems which made them incompatible with the
    
            Intel387 SL. These systems have a capacitance problem and cause the
    
            computer to fail the environment test. If this happens, call Zenith
    
            technical support. Later systems are compatible.
    
    
    
         386                      Intel387 DX or 80287-10 (not 287XL) 
    
            In the Zenith 386, set jumpers as follows to indicate the type of
    
            Intel Math CoProcessor installed.
    
    
    
                       JJ202    J204      J211
    
           No MCP      21&2     1&2       2&3
    
           80287-10    21&2     2&3       2&3
    
           i387 DX     22&3     2&3       2&3
    
    

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