
AMPRO COMPUTERS, INC.

LITTLE BOARD/386SX

Processor              80386SX
Processor Speed        25MHz
Chip Set               Ampro
Max. onboard DRAM      16MB
Cache                  None
BIOS                   Award
Dimensions             330mm x 218mm
I/O Options            Floppy drive interface, IDE interface, parallel
                       port, SCSI connector, serial ports (2)
NPU Options            80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Power connector             J1       SCSI interface              J7

  Serial port (COM2)          J2       Floppy drive interface      J8

  Serial port (COM1)          J3       IDE interface               J11

  Keyboard                    J5       Power J1-1 to +12V BUS      W7

  Parallel port               J6

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

     SCSI controller enabled                 W1               Closed

      SCSI controller disabled                W1                Open

     SCSI controller select IRQ3          W2 & W3             Closed

      SCSI controller select none          W2 & W3              Open

     Factory configured - do not             W4                Open
      alter

     Factory configured - do not             W5                Open
      alter

     SCSI termination power                  W6               Closed
      enabled

      SCSI termination power none             W6                Open

     Floppy clock select 16MHz              W10               Closed

      Floppy clock select none               W10                Open

     Flash EPROM programming power          W16                Open
      +12V to Byte-wide

      Flash EPROm programming power          W16               Closed
      disabled

     Watchdog timer output                  W17                Open
      selection

      Watchdog timer output none             W17               Closed

     Factory configured - do not            W18                Open
      alter

     Floppy PCVAL selection                 W19                Open

      Floppy PCVAL none                      W19               Closed

     Factory configured - do not            W21                N/A
      alter

     Factory configured - do not            W22                N/A
      alter

     Power fail NMI enabled                 W23                Open

      Power fail NMI none                    W23               Closed

     Parallel port interrrupt               W24                Open
      option select via setup

      Parallel port interrrupt               W24               Closed
      option none

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

     512KB        (2) 256K x 9       NONE

      1MB         (2) 256K x 9   (2) 256K x 9

      2MB         (2) 1M x 9     (2) 256K x 9

      4MB         (2) 1M x 9      (2) 1M x 9

      8MB         (2) 4M x 9         NONE

      10MB        (2) 1M x 9      (2) 4M x 9

      16MB        (2) 4M x 9      (2) 4M x 9

                         EPROM CONFIGURATION (S0)

      EPROM              W8                  W9                  W25

      27C256            Open         pins 7 & 8, 10 & 11      pins 1 & 2

      27C512            Open        pins 1 & 4, 7 & 8, 10     pins 1 & 2
                                            & 11

      27C010            Open        pins 1 & 4, 2 & 5, 6 &    pins 1 & 2
                                          9, 7 & 8

      27C020            Open        pins 1 & 4, 2 & 5, 6 &    pins 1 & 2
                                      9, 7 & 8, 11 & 12

      27C040            Open        pins 1 & 4, 2 & 3, 6 &    pins 1 & 2
                                      9, 7 & 8, 11 & 12

      27C080           Closed       pins 1 & 4, 2 & 3, 7 &    pins 1 & 2
                                         8, 11 & 12

      62256             Open        pins 4 & 7, 5 & 8, 10     pins 1 & 2
                                            & 11               or 2 & 3

      628128            Open        pins 1 & 2, 4 & 7, 5 &    pins 1 & 2
                                         8, 10 & 11            or 2 & 3

    uPD434000           Open        pins 1 & 2, 3 & 6, 4 &    pins 1 & 2
                                      7, 5 & 8, 11 & 12        or 2 & 3

      28F256            Open        pins 2 & 5, 6 & 9, 7 &    pins 1 & 2
                                              8

      28F512            Open        pins 1 & 4, 2 & 5, 6 &    pins 1 & 2
                                          9, 7 & 8

      28F010            Open        pins 1 & 4, 2 & 5, 6 &    pins 1 & 2
                                          9, 7 & 8

      28F020            Open        pins 1 & 4, 2 & 5, 6 &    pins 1 & 2
                                      9, 7 & 8, 11 & 12

  Note:Pins designated should be in the closed position.

                 EPROM/FLASH EPROM CONFIGURATION (S1 & S2)

    EPROM          W12            W13            W14             W15

    128KB       pins 2 & 3     pins 2 & 3     pins 2 & 3      pins 2 & 3
                 closed          closed         closed         closed

    256KB       pins 2 & 3     pins 2 & 3     pins 2 & 3      pins 2 & 3
                 closed          closed         closed         closed

