
AUVA COMPUTER INC.

CAM 25-P9, CAM 33-P9, CAM 33-F

J-MARK COMPUTER CORPORATION

OPTI-495SX 3/486WB

SEE-THRU DATA SYSTEMS, LTD.

STO 98-5VL


Processor       80386DX/CX486DLC/80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed 25/33/40/50(internal)/50/66(internal)MHz
Chip Set        OPTI
Max. Onboard    32MB
DRAM
SRAM Cache      64/128/256KB
BIOS            MR
Dimensions      235mm x 220mm
I/O Options     VESA local bus slots (3)
NPU Options     None

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                  Location

  External battery          J1        Turbo LED                  JP32

  Power LED &              J19        Reset switch               RST
  keylock

  Speaker                  J20        32-bit VESA Local        S2 & S3
                                      bus slots (Slave)

  Turbo switch             JP31       32-bit VESA Local        S2 & S3
                                      bus slots (Master)

  Note:VESA Local bus slot S1 should only be used for a VGA video card.

                        USER CONFIGURABLE SETTINGS

                Function                      Jumper         Position

     CMOS memory normal operation             JP1           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP1           pins 1 & 2
                                                              closed

     Factory configured - do not alter        JP2             open

      Bus clock speed select iOSC/4            JP3            closed

      Bus clock speed select iOSC/5            JP3             open

     Monitor type select color                JP4            closed

      Monitor type select monochrome           JP4             open

     Factory configured - do not alter        JP16            open

      80486 PQFP enabled                       JP17            open

      80486 PQFP disabled                      JP17           closed

      80386 PQFP enabled                       JP18            open

      80386 PQFP disabled                      JP18           closed

     VESA bus speed select <=33MHz            JP22            open

      VESA bus speed select > 33MHz            JP22           closed

     VESA bus wait states select 0            JP26            open
      (CPU <=33MHz)

      VESA bus wait state select 1 (CPU        JP26           closed
      > 33MHz)

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 256K x 9    (4) 1M x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      20MB        (4) 1M x 9      (4) 4M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

                            SRAM CONFIGURATION

     Size          Cache         Location      TAG(U39)       TAG(U40)

     64KB        (8) 8K x 8    Banks 0 & 1    (1) 8K x 8        NONE

     128KB      (4) 32K x 8       Bank 0      (1) 8K x 8        NONE

     256KB      (8) 32K x 8    Banks 0 & 1    (1) 32K x 8       NONE

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

                         SRAM JUMPER CONFIGURATION

     Size          JP10            JP11          JP13            JP15

     64KB        pins 2 & 3        open          open            open
                  closed

    128KB        pins 1 & 2       closed        closed           open
                  closed

    256KB        pins 2 & 3       closed        closed          closed
                  closed

                                 CPU CONFIGURATION

    CPU      JP5   JP6      JP7      JP12     JP30    JP34     JP35   JP36     JP37

  80386DX    2&3   open     open     open    closed   open     N/A     N/A     N/A

  CX486DLC   2&3  closed   closed    open    closed   open     N/A     N/A     N/A

  80486SX    1&2   open     open    closed    open    closed   open   open     2&3

  80487SX    1&2   open     open    closed    open    closed   2&3    closed   1&2

  80486DX    1&2   open     open    closed    open    closed   1&2    closed   1&2

  ODP487SX   1&2   open     open    closed    open    closed   2&3    closed   1&2

  80486DX2   1&2   open     open    closed    open    closed   1&2    closed   1&2

  Note:Pins designated should be in the closed position.

                            CLOCK SPEED SELECT

         Speed              JP25         JP28        JP29        JP33

         25MHz            pins 1 & 2    closed       open      pins 1 & 2
                           closed                               closed

   33MHz(386/486DLC)      pins 2 & 3    closed       open      pins 1 & 2
                           closed                               closed

       33MHz(486)         pins 1 & 2     open       closed     pins 1 & 2
                           closed                               closed

       40MHz(486)         pins 1 & 2     open        open      pins 1 & 2
                           closed                               closed

   40MHz(386/486DLC)      pins 2 & 3     open       closed     pins 1 & 2
                           closed                               closed

         50iMHz           pins 2 & 3    closed       open      pins 2 & 3
                           closed                               closed

         50MHz            pins 1 & 2    closed       open      pins 1 & 2
                           closed                               closed

         66iMHz           pins 2 & 3     open       closed     pins 2 & 3
                           closed                               closed

            VESA SLOT (S2 &AMP; S3) MASTER/SLAVE CONFIGURATION

         Jumper                Master/Slave               Slave only

          JP8                      open                     closed

          JP9                      open                     closed

          JP14                     open                     closed

          JP19                     open                     closed

          JP21                     open                     closed

          JP23               pins 1 & 2 closed        pins 2 & 3 closed

          JP24                     open                     closed

          JP27               pins 1 & 2 closed        pins 2 & 3 closed

    U29 (PAL socket)             Installed                   N/A

    U38 (PAL socket)             Installed                   N/A

  Note:When the Master/Slave setting is used slots S2 & S3 can use
  Bus-master cards or slave cards.

  When the Slave only setting is used non-Bus-master cards can be used.

