TULIP COMPUTERS

DC/DT 486SX (TC35)

Processor         80486SX/80487SX/80486DX/ODP486SX
Processor Speed   20/40(internal)MHz
Chip Set          Texas Instruments
Max. Onboard DRAM 20MB
Cache             256K
BIOS              Phoenix
Dimensions        330mm x 218mm
I/O Options       Floppy drive interface, IDE interface, parallel port,
                  serial ports(2), VGA feature connector, VGA port
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                  Location   Purpose                    Location

  VGA port                   CN1      LED, Speaker, Batteries      J2

  Serial port 2              CN2      IDE interface                J3

  Parallel port              CN3      VESA feature connector       J9

  Serial port 1              CN4      Floppy drive interface       J10

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

  »   Parallel port unidirectional             J20           Pins 1 & 2
      (printer)                                               closed

      Paralled port bidirectional              J20           Pins 2 & 3
                                                              closed

  »   Battery - Rechargeable                   J21           Pins 1 & 2
                                                              closed

      Battery - Non-rechargeable               J21              N/A

  »   Factory configured - do not alter        J22              N/A

                CPU UPGRADE TYPE CONFIGURATION

       UPGRADE               J14                  J18

       80487SX               N/A           Pins 2 & 3 closed

       80486DX         Pins 1 & 2 closed   Pins 2 & 3 closed

      80486DX2         Pins 1 & 2 closed   Pins 2 & 3 closed

      ODP486SX               N/A           Pins 2 & 3 closed

                            CACHE CONFIGURATION

       Size             Bank 0             TAG                J11

       64KB           (9) 8K x 8       (1) 64K x 1            N/A

      256KB          (9) 32K x 8       (1) 64K x 1      Pins 1 &2, 3 & 4
                                                             closed

                    DRAM CONFIGURATION

  Expansion from:     Expansion to:          Bank 0

        4MB                8MB            (4) 1MB x 9

        4MB               20MB            (4) 4MB x 9

  Note: 4MB is internal memory and is not configurable.

            VRAM CONFIGURATION

        VRAM                 J23

        512KB         Pins 1 & 2 closed

       1024KB         Pins 2 & 3 closed

                     VRAM CONFIGURATION

  Expansion from:      Expansion to:           VRAM

       512KB                1MB            (4) 256K x 4

  Note: 512KB is internal memory and is not configurable.