LEADING TECHNOLOGY

6500SX

Processor              80386SX (exact location unknown)
Processor Speed        16/20/25MHz
Chip Set               SIS
Max. Onboard DRAM      4MB
Cache                  None
BIOS                   AMI
Dimensions             254mm x 220mm
I/O Options            Floppy drive interface, IDE interface, Game port,
                       parallel port, serial ports (2)
NPU Options            80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Parallel port               CN1      IDE interface               J10

  Joystick port               CN2      Floppy drive interface      J12

  Serial port 2               CN3      Speaker                     J15

  Serial port 1               CN4      IDE interface LED           J32

  Front panel connector       J4       Riser Card                  S1

  External battery            J9

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   Joystick port enabled                  J17               Closed

      Joystick port disabled                 J17                Open

  »   Floppy drive interface                 J28                Open
      enabled

      Floppy drive interface                 J28               Closed
      disabled

  »   IDE interface enabled                  J29               Closed

      IDE interface disabled                 J29                Open

  »   Parity enabled                         J33               Closed

      Parity disabled                        J33                Open

  »   NPU disabled                           J40             pins 1 & 2
                                                               closed

      NPU enabled                            J40             pins 2 & 3
                                                               closed

  »   Factory configured - do not           SW2/5               Off
      alter

  »   Factory configured - do not           SW2/6                On
      alter

  »   Factory configured - do not           SW2/7               Off
      alter

                      DRAM CONFIGURATION

      Size          Bank 0          Bank 1          Bank 2

      1MB          (8) 44256         NONE            NONE

     1.5MB         (8) 44256     (2) 256K x 9        NONE

      2MB          (8) 44256     (2) 256K x 9    (2) 256K x 9

      2MB            NONE         (2) 1M x 9         NONE

      4MB            NONE         (2) 1M x 9      (2) 1M x 9

                         DRAM SWITCH CONFIGURATION

   Size    SW2/1    SW2/2     SW2/3    SW2/4    SW2/8    SW2/9    SW2/10

   1MB       On       On       On       On       On       On        Off

  1.5MB      On       On       On       On       On       Off       On

   2MB       On       On       On       On       On       Off       Off

   2MB       On      Off       Off      On       On       On        On

   4MB       On      Off       Off      Off      On       On        Off

                         SERIAL PORT CONFIGURATION

  Port 1 (CN4)      Port 2       J20        J22        J25         J26
                    (CN2)

  »     COM1         COM2       2 & 3      1 & 2       Open       Open

        COM1         COM3       2 & 3       Open      1 & 2       Open

        COM1         COM4       2 & 3       Open       Open       1 & 2

        COM2         COM1       1 & 2      2 & 3       Open       Open

        COM2         COM3        Open      2 & 3      1 & 2       Open

        COM2         COM4        Open      2 & 3       Open       1 & 2

        COM3         COM1       1 & 2       Open      2 & 3       Open

        COM3         COM2        Open      1 & 2      2 & 3       Open

        COM3         COM4        Open       Open      2 & 3       1 & 2

        COM4         COM1       2 & 3       Open       Open       1 & 2

        COM4         COM2        Open      1 & 2       Open       2 & 3

        COM4         COM3        Open       Open      1 & 2       2 & 3

  Note:Pins designated should be in the closed position.

                       SERIAL PORT IRQ CONFIGURATION

    Port 1 (CN1)       Port 2 (CN2)          J18               J19

  »       IRQ4             IRQ3           pins 2 & 3        pins 1 & 2
                                           closed             closed

          IRQ3             IRQ4           pins 1 & 2        pins 2 & 3
                                           closed             closed

                        PARALLEL PORT CONFIGURATION

        LPT              IRQ              J16                 J21

  »        1              7            pins 2 & 3      pins 2 & 3 closed
                                         closed

           1              5            pins 2 & 3      pins 1 & 2 closed
                                         closed

           2              7            pins 1 & 2      pins 2 & 3 closed
                                         closed

           2              5            pins 1 & 2      pins 1 & 2 closed
                                         closed