MBF COMPANY CONFIDENTIAL FIELD INFORMATION BULLETIN

SERVICE GROUP(S): MICRO                MFG: APPLIED REASONING

 NACS  TYPE(S): N091                   MFG. MODEL(S): ACCELERATOR

CATEGORY: PC ADD-IN BOARDS             DESC: BOARD

                   *** TABLE OF CONTENTS AS OF 12/20/90 ***
FIB 00001.PC-ELEVATOR ................................................10/01/87


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                              *** PC-ELEVATOR  ***                           

                              PART NUMBER PC000629

An accelarator board that plugs into a PC or XT and allows it to work like a
AT using an 80286 co-processor.
UP command switches the system to 80286 mode
DOWN switches back to normal PC mode (8088)

SWITCHES AND JUMPERS:
SWITCH 1 8 POS
        POS 1   POS 2           I/O ADDRESS
        OFF     OFF             31C to 31F
        ON      OFF             21C to 21F
        OFF     ON              11C to 11F

        POSITIONS 3 TO 7 ONLY ONE ON FOR INTERRUPT SELECT
        POS 3 ON        INTERRUPT 2
        POS 4 ON        INTERRUPT 3
        POS 5 ON        INTERRUPT 4
        POS 6 ON        INTERRUPT 5
        POS 7 ON        INTERRUPT 6
        POS 8 ON        INTERRUPT 7
        ALL OFF         NONE

JUMPERS MATCH THE 80286 PROCESSOR SPEED TO THE OPTIONAL 80287. W2 SHOULD NOT BE.
CHANGED. Normally preset but the 80287 could be added later.

WI POSITION             W3 POSITION             W2 POSITION
X (LOWER 2 PINS)        C (RIGHT 2 PINS)        1 (LEFT 2 PINS)
Y (UPPER 2 PINS)        B (MIDDLE 2 PINS)       2 (RIGHT 2 PINS)
                        A (LEFT 2 PINS)         N/C (NO CONNECTION)

MODEL #         80286   80287   80287   w1      w2      w3
                speed   rated   actual
2080            8mhz      -       -     X       1       C
2085            8mhz    5mhz    5.3     X       1       C                    
2088            8mhz    8mhz    7.2     Y       1       A                    
2100            10mhz     -       -     Y       N/C     A
2108            10mhz   8mhz    7.2     Y       N/C     A
2120            12mhz     -       -     X       2       C
2128            12mhz   8mhz    8.3     X       2       C

SOFTWARE:
Menu driven SETUP program requires pre-formatted bootable floppy or harddisk.
SETUP creates a configuration file called UP.SYS
ADDITIONAL MEMORY UTILITIES:
CACHE   Disk cache stores frequently used information from disk into RAM.
RAMDISK Simulates a disk drive in RAM.
SPOOL   print spooler that buffers output to printer
EMM     Defines RAM as expanded memory for software using the LOTUS/INTEL/
        MICROSOFT expanded memory specification (EMS).
FIXSG   Will patch some copy protected schemes so that the protected programs
        can be run with the PC-elevATor.

ORIGINATOR: JOHN HILL


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