BASE SYSTEMS, INC.

BT 1000

Processor         80286
Processor Speed   10MHz
Chip Set          Everex
Max. Onboard DRAM 1MB
Cache             None
BIOS              AMI
Dimensions        355mm x 304mm
I/O Options       Serial ports (2), parallel port
NPU Options       80287

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Speaker                   J2         Turbo LED           J12 pins 1 & 2

  Power LED &               J3         Reset switch          J12 pin 3
  keylock

  Serial port 2             J7         Ground                J12 pin 4

  Serial port 2             J9         Turbo switch          J12 pin 5

  Parallel port             J8         External battery         W15

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   DRAM speed select 0 wait              W1/5                 On
      states

      DRAM synchronous with 16-bit          W1/5                Off
      access cycle wait state

  »   Factory configured - do not           W1/6                Off
      alter

  »   Monitor type select color              W3                Closed

      Monitor type select                    W3                 Open
      monochrome

  »   8-bit access cycle speed               W7              pins 1 & 2
      select 4 wait states                                     closed

      8-bit access cycle speed               W7              pins 3 & 4
      select 5 wait states                                     closed

      8-bit access cycle speed               W7              pins 5 & 6
      select 6 wait states                                     closed

  »   Factory configured - do not            W10                N/A
      alter

  »   Factory configured - do not            W12             pins 3 & 4
      alter                                                    closed

  »   Factory configured - do not            W13                N/A
      alter

  »   Factory configured - do not            W16                N/A
      alter

                            DRAM CONFIGURATION

  Size       Bank 0         Bank 1        W1/switch 7       W1/switch 8

  256KB     (18) 4164      (18) 4164         closed           closed

  512KB    (18) 41256        NONE            closed            open

  640KB    (18) 41256      (18) 4164          open            closed

   1MB     (18) 41256     (18) 41256          open             open

                   NPU SPEED CONFIGURATION

        Speed                 W8                  W11

        8MHz           pins 1 & 2 closed   pins 1 & 2 closed

        10MHz          pins 1 & 2 closed   pins 2 & 3 closed

                        PARALLEL PORT CONFIGURATION

    Port        IRQ      Address      W4/1      W4/2     W4/3      W4/4

  Disabled     NONE        NONE       Off       Off       Off       Off

    LPT1       IRQ7     378H-37FH      On       Off       On        Off

    LPT2       IRQ5     278H-27FH      On        On       Off       On

              SERIAL PORT 1 CONFIGURATION

            Port                        W14

            COM1             pins 1 & 2, 3 & 4 closed

            COM3                 pins 1 & 2 closed

          Disabled               pins 3 & 4 closed

              SERIAL PORT 2 CONFIGURATION

            Port                        W14

            COM2             pins 5 & 6, 7 & 8 closed

            COM4                 pins 5 & 6 closed

          Disabled               pins 7 & 8 closed

                   NPU SPEED CONFIGURATION

        Speed                 W8                  W11

        8MHz           pins 1 & 2 closed   pins 1 & 2 closed

        10MHz          pins 1 & 2 closed   pins 2 & 3 closed

             BIOS CONFIGURATION

  Size     W1/1     W1/2    W1/3     W1/4

  27128     On       On      Off      Off

  27256    Off      Off      On       On