
JC INFORMATION SYSTEMS CORPORATION

MODEL 2060

Processor     80386DX/80486SX/80487SX/80486DX/80486DX2
Processor     20/25/33/40(internal)/50/50(internal)/66(internal)
Speed
Chip Set      OPTI
Max. Onboard  64MB
DRAM
SRAM Cache    64/128/256KB
BIOS          AMI
Dimensions    330mm x 202mm
I/O Options   16-bit riser card slot, bus mouse port, diagnostic port

              floppy drive interface, IDE interface, parallel port, PS/2
              style keyboard

              serial ports (2), VGA feature connector, VGA port
NPU Options   None

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  Diagnostic port           DIAG       IDE interface              J13

  VGA port                   J1        Power LED & keylock        J15

  Parallel port              J2        Turbo LED                  J16

  Serial port (COM2)         J3        Turbo switch               J17

  Serial port (COM1)         J4        Reset switch               J18

  Bus mouse port             J5        Speaker                    J19

  PS/2 style keyboard        J6        External battery           P1
  connector

  VGA feature                J7        16-bit riser card          S1
  connector

  Floppy drive               J12
  interface

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation            JP18           pins 2 & 3
                                                              closed

      CMOS memory clear                       JP18           pins 1 & 2
                                                              closed

     Monitor type select color               JP19            closed

      Monitor type select monochrome          JP19             open

     BIOS type select EPROM                  JP20           pins 2 & 3
                                                              closed

      BIOS type select Flash ROM              JP20           pins 1 & 2
                                                              closed

     On-board VGA enabled                    JP21            closed

      On-board VGA disabled                   JP21             open

              VRAM CONFIGURATION

         Size                   VRAM

         512KB                  NONE

        1024KB                (4) 44256

  Note:The base 512KB is soldered on board.

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     1MB        (1) 256K x        NONE           NONE           NONE
                    36

     2MB        (1) 256K x     (1) 256K x        NONE           NONE
                    36             36

     3MB        (1) 256K x     (1) 256K x     (1) 256K x        NONE
                    36             36             36

     4MB        (1) 256K x     (1) 256K x     (1) 256K x    (1) 256K x 36
                    36             36             36

     4MB       (1) 1M x 36        NONE           NONE           NONE

     5MB        (1) 256K x    (1) 1M x 36        NONE           NONE
                    36

     6MB        (1) 256K x     (1) 256K x    (1) 1M x 36        NONE
                    36             36

     7MB        (1) 256K x     (1) 256K x     (1) 256K x     (1) 1M x 36
                    36             36             36

     8MB       (1) 1M x 36    (1) 1M x 36        NONE           NONE

     9MB        (1) 256K x    (1) 1M x 36    (1) 1M x 36        NONE
                    36

     10MB       (1) 256K x     (1) 256K x    (1) 1M x 36     (1) 1M x 36
                    36             36

     12MB      (1) 1M x 36    (1) 1M x 36    (1) 1M x 36        NONE

     13MB       (1) 256K x    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36
                    36

     16MB      (1) 1M x 36    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     16MB      (1) 4M x 36        NONE           NONE           NONE

     32MB      (1) 4M x 36    (1) 4M x 36        NONE           NONE

     48MB      (1) 4M x 36    (1) 4M x 36    (1) 4M x 36        NONE

     64MB      (1) 4M x 36    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36

                          CPU TYPE CONFIGURATION

     Type          JP1         JP2         JP3        JP11         JP13

   80486DX2      pins 1 &    closed      pins 1 &    closed      pins 2 &
                    2                       2                       3

    80486DX      pins 1 &    closed      pins 1 &    closed      pins 2 &
                    2                       2                       3

    80487SX      pins 1 &    closed      pins 2 &    closed      pins 2 &
                    2                       3                       3

    80486SX      pins 2 &     open        open       closed      pins 2 &
                    3                                               3

    80386DX        N/A         N/A         N/A        open       pins 1 &
                                                                    2

  Note:Pins designated should be in the closed position.

                          CPU SPEED CONFIGURATION

       Speed          OSCI      JP12        S0         S1          S2

       20MHz         40MHz      pins 2    closed      open       closed
                                 & 3

       25MHz         50MHz      pins 2     open       open       closed
                                 & 3

       33MHz         66MHz      pins 2    closed     closed       open
                                 & 3

       40MHz         80MHz      pins 2     open      closed       open
                                 & 3

  50(internal)MHz    50MHz      pins 2     open       open       closed
                                 & 3

       50MHz         50MHz      pins 1     open       open       closed
                                 & 2

  66(internal)MHz    66MHz      pins 2    closed     closed       open
                                 & 3

  Note:Pins designated should be in the closed position.

            SRAM JUMPER CONFIGURATION

   Size      JP4       JP5       JP6       JP7

   64KB      open     open      open      open

  128KB     closed    open      open     closed

  256KB     closed   closed    closed    closed

                    SRAM CONFIGURATION

     Size        Cache SRAM      Location         TAG

     64KB        (8) 8K x 8    Banks 0 & 1    (1) 16K x 4

     128KB      (4) 32K x 8       Bank 0      (1) 16K x 4

     256KB      (8) 32K x 8    Banks 0 & 1    (1) 16K x 4

                 PARALLEL & SERIAL PORT IRQ CONFIGURATION

              Function/IRQ                   Jumper          Position

     Parallel port interrupt select        JP14/PP          pins 1 & 2
      IRQ7                                                    closed

      Parallel port interrupt select        JP14/PP          pins 2 & 3
      IRQ5                                                    closed

     Serial port COM 1 interrupt           JP14/S1          pins 1 & 2
      select IRQ4                                             closed

      Serial port COM 1 interrupt           JP14/S1          pins 2 & 3
      select IRQ3                                             closed

     Serial port COM 2 interrupt           JP14/S2          pins 2 & 3
      select IRQ3                                             closed

      Serial port COM 2 interrupt           JP14/S2          pins 1 & 2
      select IRQ4                                             closed

