UNIDENTIFIED

80286-12 TURBO

Processor         80286
Processor Speed   12MHz
Chip Set          Unknown
Max. Onboard DRAM 4MB
Cache             None
BIOS              AMI
Dimensions        243mm x 218mm
I/O Options       None
NPU Options       80287

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            J2       Reset switch               JP13

  Turbo LED                  JP11      Speaker                    JP14

  Turbo switch               JP12      Power LED & keylock        JP15

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

      Factory configured - do not alter         J8              N/A

      Factory configured - do not alter         J9              N/A

  »   NPU mode select synchronous with         J10           pins 2 & 3
      CPU                                                     closed

      NPU mode select asynchronous with        J10           pins 1 & 2
      CPU                                                     closed

  »   Monitor type select color                JP5           pins 2 & 3
                                                              closed

      Monitor type select monochrome           JP5           pins 1 & 2
                                                              closed

                            DRAM CONFIGURATION

   Size     Bank 0       P-0      Bank 1       P-1      Bank 2    Bank 3

  512KB       (4)        (2)       NONE       NONE       NONE      NONE
             44256      41256

  512KB      NONE       NONE       NONE       NONE        (2)      NONE
                                                        256K x
                                                          9

  640KB       (4)        (2)      (4) 4464   (2) 4164    NONE      NONE
             44256      41256

   1MB        (4)        (2)        (4)        (2)       NONE      NONE
             44256      41256      44256      41256

   1MB       NONE       NONE       NONE       NONE        (2)       (2)
                                                        256K x     256K x
                                                          9          9

   2MB       NONE       NONE       NONE       NONE      (2) 1M     NONE
                                                         x 9

   4MB       NONE       NONE       NONE       NONE      (2) 1M     (2) 1M
                                                         x 9        x 9

            Notes:Locations of Bank 0, Bank 1, P0, & P1 unidentified.
            Bank 0 consists of U26, U27, U31, & U32. Bank 1 consists of
            U35, U36, U37, & U38. P-0 consists of U41 & U42. P-1 consists
            of U43 & U44.