
AST RESEARCH, INC.

PREMIUM WORKSTATION/286

Processor                    80286
Processor Speed              10MHz
Chip Set                     AST
Max. Onboard DRAM            4MB
Cache                        None
BIOS                         AST
Dimensions                   330mm x 218mm
I/O Options                  Floppy drive controller module, IDE interface,
                             parallel port, serial ports (2), video
                             controller module
NPU Options                  80287

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                  Location

  Parallel port            CN1        IDE interface               J2

  Serial port 2            CN2        Floppy drive                J3
  (COM2)                              controller module

  Serial port 1            CN3        External battery            J6
  (COM1)

  Riser card               CN4        Optional ROM (odd)          U56

  Video port               CN5        Optional ROM (even)         U65

  Front panel               J1
  switches & LEDs

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     BIOS type select 27128                   JP7           pins 1 & 2
                                                              closed

      BIOS type select 27256                   JP7           pins 2 & 3
                                                              closed

     Factory configured - do not alter        JP8             open

  Note:Jumper JP8 may not be present on all board revisions.

                            DRAM CONFIGURATION

      Size        Jumpers JP1 through       Bank 0            Bank 1
                         JP6

     512KB        pins 1 & 2 closed      (2) 256K x 9          NONE

      1MB         pins 1 & 2 closed      (2) 256K x 9      (2) 256K x 9

      2MB         pins 2 & 3 closed       (2) 1M x 9           NONE

      4MB         pins 2 & 3 closed       (2) 1M x 9        (2) 1M x 9

