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                    Inboard 386/PC Common Problems                        
                                                                          
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 BEEPS AT POWER UP (IBM SPECS)

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        Type of beep                  Type of Problem          
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      Continuous Beep                 A power supply problem   
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      Repeating Short Beeps           A power supply problem   
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      1 Long and 1 Short Beep         A system board problem   
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      1 Long and 2 short Beeps        A display problem        
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      1 Long and 3 Short Beeps        An EGA problem           
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      Short Beeps and Blank                                    
      or Incorrect Display            A video board problem    
     

 S.O.S. BEEPS

     This error occurs if the Inboard 386/PC detects the computer supplying
     over 256k of memory. The Inboard 386/PC can only replace the system
     board memory if 256k (or less) is being provided by the system board.

     If you receive the SOS beep when the computer appears to be configured
     properly, toggle the system board switches several times and then
     restart the computer.

     In some "compatible" computers the switches on the motherboard that
     would correspond to the IBM memory configuration switches aren't even
     hooked up. It may be necessary to check with the system board
     manufacturer as to how to properly disable memory to 256k (or lower).

 CAN'T FORMAT FLOPPY

     If you have this problem, add the NOCACHE parameter to the INBRDPC.SYS
     command.  You can also try the FDWAIT parameter.

 CONTINUOUS POST SYMPTOM

     At power up, if Switch 1 on a PC XT system board is ON, the computer
     will count to 640K bytes and then count again, continuously.  Turn
     Switch 1 OFF.

 HARD DISK ACCESS PROBLEMS

     The ILIM386.SYS DMA=xx parameter can help with drive access problems
     with some hard disk controllers. The default DMA transfer area size is
     64K bytes. Try other values, starting with DMA=32.

 INBOARD 386/PC AND HEAT

     The InBoard 386/PC can draw up to 20 Watts of power. This much power
     draw inside a PC system can cause heat-related, intermittent failures
     from both the InBoard 386/PC and other components. To insure the best
     operating environment, make sure the InBoard 386/PC has as much open
     space around it as possible. If it is not possible to move the other
     cards in the system away from the InBoard 386/PC, it may be necessary
     to add an additional cooling fan.

 COLDBLUE

     If you have heat-related problems with Inboard 386/PC installed, the
     COLDBLUE add-on cooling system for IBM PCs and XTs may help. COLDBLUE
     snaps to the front of the system unit behind the cover's front
     ventilation slots.  COLDBLUE consists of side-by-side cooling fans that
     force air across the expansion cards at a claimed rate of 25cfm.

     Intel hasn't tested this product, but you can contact COLDBLUE Corp. at
     (512) 341-6155.

 PC POWER & COOLING HEAVY DUTY POWER SUPPLY

     PC Power & Cooling makes high capacity power supplies with large fans
     for IBM XT and AT and COMPAQ PORTABLE systems. Here's their address: PC
     Power and Cooling, PO BOX 518, Bonsall, CA 92003-0518 (619) 723-9513
     FAX: (619) 723-0075

 RADIO SHACK FAN

     One customer reported using a Radio Shack 3" x 3"  external cooling fan
     with Inboard 386/PC.  The user reported the fan worked great and fits
     closely against the back of the computer. Intel has not tested this
     product.

 LOCKUPS WITH CAD PROGRAMS

     Some programs will recognize a math coprocessor even if the math
     coprocessor switch is set incorrectly.  Other programs won't, so make
     sure the switch is set correctly.

 MISSING OR WRONG DISK AND MANUALS

     If you receive the wrong diskettes or manual with your Inboard 386/PC,
     do the following:

     1.  Note whether the Inboard 386/PC box was unopened before you bought
         it.
     2.  Gather the following information:
         a.  Serial number of the Inboard 386/PC
         b.  Date on outer label of Inboard 386/PC
         c.  Name and address of the dealer who sold the Inboard 386/PC
         d.   List of missing items
     3.  Contact Intel Customer Support

 PRINTER PRINTS UNWANTED CHARACTERS

     If this happens, set the Inboard 386/PC to Speed 1. One user with an
     Inboard 386/PC in an IBM XT reported that a NEC 8800 Spinwriter printed
     unwanted characters unless the Inboard 386/PC was set to Speed 1.  This
     customer then installed a print spooler program called Softbytes, and
     the printer printed fine at all speeds.

 SLOW HARD DISK ACCESS OR READ ERRORS

     Most disk drive manufacturers and dealers set drives for a 3:1
     interleave.  This could cause very slow hard disk access or read
     errors.  More appropriate values are 4:1 or 5:1.

 INBOARD 386/PC DRIVER ERRORS ON SOFTWARE WARMBOOTS

     ILIM386 version 4.07  "survives" a software generated warmboot, leaving
     the processor in virtual 8086 mode.  Because of this, INBRDPC.SYS will
     display an error when it tries to load.  The error states that "80386
     control software has already been loaded".  To boot successfully, reset
     your computer using one of the following methods:

        Press CTRL-ALT-DEL keys at the same time.
        Press the reset button on your computer (if available).
        Turn the power off, wait 30 seconds then turn it back on.

 OUT OF ENVIRONMENT SPACE

     The DOS 3.x environment may be up to 32K bytes long.  During power on,
     COMMAND.COM receives a default environment size of 160 bytes.  This
     can fill up quickly, in which case DOS displays the message "Out of
     environment space."  If you use DOS 3.1 through 3.3, you can increase
     the environment size by including the following command in the
     CONFIG.SYS file:

     shell=[d:][path]command.com /p /e:xxxx

     In DOS 3.1, xxxx is the # of paragraphs (16 byte blocks) in the
     environment.  The allowable range is from 10 to 2048.  In DOS 3.2 and
     3.3, xxxx is the actual # of bytes in the environment.  The allowable
     range is from 160 to 32,768.

 1701 ERROR

     IBM PC XTs will report a 1701 Hard disk controller error on power up if
     the power has been left off for less than 15 seconds and if the cold
     boot follows a warm boot.  This happens even without the Inboard 386/PC
     installed.  The fixed disk BIOS causes this error when it fails a test
     when the warm boot flag is still in memory on a cold boot. Powering up
     quickly right after a warm boot doesn't give the RAM time to discharge
     and lose the warm boot flag.

 A055 201 MEMORY ERROR

     If you receive a A055 201 Parity Check 2 message, make sure the power
     supply is rated for 100 watts or greater.

     This error also occurs in IBM PCs on power up when switches 3 and 4 on
     switch block 1 are set to ON.  These switches must be OFF for a valid
     memory configuration.

 ILIM PRIVILEGED OPERATION EXCEPTION ERROR

     ILIM386 generates this error when an instruction is incompatible with
     the current CPU operation mode.  An interaction between the application
     software, ILIM386, and the system BIOS can cause this error.  Changing
     the system BIOS may solve the problem.

 IOCTL ERROR MESSAGE

     This error occurs when you change from a low speed to speed 4 using
     ISPEEDPC. If you receive this error you probably need newer Inboard
     386/PC software, this latest software is available on the Intel BBS and
     on Compuserve.

 PARITY CHECK 2 ERROR

     The most common cause for this error is a result of himem.sys loading
     before the Inboard driver. (This the default in DOS 5.0 and Windows 3.0
     installations.)  To correct the problem, boot the system to a plain DOS
     boot disk and relocate the himem.sys command line after the INBRDPC.SYS
     command line.

     It is also possible to get a Parity Check 2 if the INBRDPC.SYS driver
     isn't being loaded into the Config.sys file.

     One Customer with a COMPAQ PORTABLE Plus and ATI Wonder Card received a
     Parity check 2 message on warm boot.  Turning SW8 off on the ATI board
     solved the problem.

 ROM CHECK SUM ERROR

     If you receive this error on warm boot in an PC XT-compatible computer
     with a Phoenix BIOS, add the NOCACHE parameter to the INBRDPC.SYS
     command.



End of file                 Intel FaxBack # 2560          July 17,1992
