GESPAC

GESSBS-40

Device Type                Mainboard
Processor                  68040
Processor Speed            33MHz
Chip Set                   Unidentified
Video Chip Set             None
Maximum Onboard Memory     None
Maximum Video Memory       None
Cache                      Unidentified
BIOS                       Unidentified
Dimensions                 160mm x 100mm
I/O Options                Serial ports (2), G-96 bus interface, I/O
                           interface connector, XSB local expansion
                           submodule buses (2)
NPU Options                None

[Image]

                                CONNECTIONS

  Purpose                 Location      Purpose                 Location

  Multi processor            C1         Serial port 1              P4
  module

  G-96 bus interface         P1         XSB local expansion        P5
                                        submodule bus

  I/O interface              P2         XSB local expansion        P6
  connector                             submodule bus

  Serial port 2              P3         Reset/abort switch         P7

                        USER CONFIGURABLE SETTINGS

              Function                    Label            Position

      EPROM size select 64K x 16 or         J1         Pins 1 & 2 closed
      128K x 16

      EPROM size select 256K x 16           J1         Pins 2 & 3 closed

      RTC battery disabled                  J2         Pins 1 & 4 closed

      RTC battery enabled                   J2         Pins 2 & 3 closed

      Cache enabled                     J4/pins 1 &          Open
                                            4

      Cache disabled                    J4/pins 1 &         Closed
                                            4

      PNMU enabled                      J4/pins 2 &          Open
                                            3

      PNMU disabled                     J4/pins 2 &         Closed
                                            3

      Base address select for dual          J5         Pins 1 & 2 closed
      ported RAM < 32MB

      Base address select for dual          J5         Pins 2 & 3 closed
      ported RAM > 32MB

      SYSCLK speed select CPU =             J6         Pins 1 & 2 closed
      SYSCLK

      SYSCLK speed select CPU =             J6         Pins 2 & 3 closed
      SYSCLK/2

      External cache access enabled         J7               Open

      External cache access                 J7              Closed
      disabled

      Enable & SYSCLK and BGRT              J8         Pins 2 & 3 closed
      driven

      Enable & SYSCLK and BGRT not          J8               Open
      driven

  »   Factory configured - do not           P8           Unidentified
      alter

    DUAL PORTED RAM-BASE ADDRESS SELECTION

        Address                  J9

          A21           Pins 11 & 12 closed

          A22           Pins 10 & 13 closed

          A23            Pins 9 & 14 closed

          A24            Pins 8 & 15 closed

          A25            Pins 7 & 16 closed

          A26            Pins 6 & 17 closed

          A27            Pins 5 & 18 closed

          A28            Pins 4 & 19 closed

          A29            Pins 3 & 20 closed

          A30            Pins 2 & 21 closed

          A31            Pins 1 & 22 closed

                      STANDBY BATTERY POWER SELECTION

                 Setting                                J3

      From P1-29b (+Vbatt bus line)                    Pin 1

  To MAX696 power supply supervisor chip               Pin 2

           From local battery                          Pin 3

  Note: Location of LEDs is unidentified.

                             DIAGNOSTIC LED(S)

    LED        Color        Status                  Condition

   LED1         Red           On         Processor is in supervisor mode

   LED2       Orange          On          Processor attempting to access
                                         and external module & it has not
                                         yet the owner of the G-6432 bus
                                                     module

   LED3       Yellow          On         GESSBS-40 is retrying an aborted
                                                      cycle

   LED4        Green          On         Processor is halted or during a
                                                 reset operation