
ELITEGROUP COMPUTER SYSTEMS, INC.

SI54P VIO

Processor              Pentium
Processor Speed        75/90/100MHz
Chip Set               SIS
Max. Onboard DRAM      128MB
Cache                  256/512/1024KB
BIOS                   Phoenix
Dimensions             330mm x 218mm
I/O Options            Floppy drive interface, green PC connector, IDE
                       interfaces (2), parallel port, PS/2 mouse port,
                       serial ports (2), VGA feature connector, VGA port,
                       riser slot
NPU Options            None

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                Location

  Parallel port              J1        3.3v connector            J14

  Serial port 2              J2        IDE interface LED        JP15

  Serial port 1              J3        Turbo LED            JP21 pins 2 -
                                                                  3

  VGA port                   J5        Green PC connector   JP21 pins 4 -
                                                                  5

  PS/2 mouse port            J6        Turbo switch         JP21 pins 6 -
                                                                  7

  VGA feature                J8        Reset switch         JP21 pins 9 -
  connector                                                      10

  Floppy drive              J11        Power LED &           JP21 pins 11
  interface                            keylock                  - 15

  IDE interface             J12        Speaker               JP21 pins 17
  (secondary)                                                   - 20

  IDE interface             J13        Riser Card                SL1
  (primary)

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper         Position

     Video memory type select fast           JP1           pins 1 & 2
      page mode                                              closed

      Video memory type select extended       JP1           pins 2 & 3
      data out mode                                          closed

     SMC 37C665 signal enabled               JP4           pins 1 & 2
                                                             closed

      SMC 37C665 signal disabled              JP4           pins 2 & 3
                                                             closed

     BIOS type select EPROM                  JP5             Open

      BIOS type select 5v flash               JP5           pins 1 & 2
                                                             closed

      BIOS type select 12v flash              JP5           pins 2 & 3
                                                             closed

     CMOS memory normal operation            JP6             Open

      CMOS memory clear                       JP6            Closed

     Parity check enabled                    JP12          pins 2 & 3
                                                             closed

      Parity check disabled                   JP12          pins 1 & 2
                                                             closed

     IDE interface enabled                   JP13            Open

      IDE interface disabled                  JP13           Closed

     DRAM type select single side in         JP14          pins 2 & 3
      both banks                                             closed

      DRAM type select double side in         JP14       pins 1 & 2, 3 &
      bank 2 & single side in bank 1                        4 closed

     Cache type select write back            JP17          pins 1 & 2
                                                             closed

      Cache type select write through         JP17          pins 2 & 3
                                                             closed

     CPU write to always                     JP18          pins 1 & 2
                                                             closed

      CPU write to invalidate                 JP18          pins 2 & 3
                                                             closed

     CPU next address disabled               JP19          pins 1 & 2
                                                             closed

      CPU next address enabled                JP19          pins 2 & 3
                                                             closed

     Factory configured - do not alter       JP20             N/A

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       2MB        (2) 256K x 36         NONE

       4MB        (2) 256K x 36    (2) 256K x 36

       4MB        (2) 512K x 36         NONE

       8MB        (2) 512K x 36    (2) 512K x 36

       8MB         (2) 1M x 36          NONE

      16MB         (2) 1M x 36      (2) 1M x 36

      16MB         (2) 2M x 36          NONE

      32MB         (2) 2M x 36      (2) 2M x 36

      36MB        (2) 512K x 36     (2) 4M x 36

      36MB        (2) 512K x 36     (2) 4M x 36

      48MB         (2) 2M x 36      (2) 4M x 36

      64MB         (2) 4M x 36      (2) 4M x 36

      64MB         (2) 8M x 36          NONE

      128MB        (2) 8M x 36      (2) 8M x 36

      128MB        (2) 16M x 36         NONE

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

     256KB        (4) 32K x 8     (4) 32K x 8    (2) 32K x 8

     512KB        (4) 64K x 8     (4) 64K x 8    (2) 32K x 8

      1MB        (4) 128K x 8    (4) 128K x 8    (2) 32K x 8

  CACHE JUMPER CONFIGURATION

   Size      JP10      JP11

  256KB      Open      Open

  512KB     Closed     Open

   1MB      Closed    Closed

                       CPU SPEED CONFIGURATION

               Speed                              JP16

               75MHz                       pins 1 & 2 closed

               90MHz                    pins 1 & 2, 5 & 6 closed

              100MHz                pins 1 & 2, 3 & 4, 5 & 6 closed

                    DACK/DRQ CONFIGURATION

      DACK/DRQ               JP8                  JP9

     DACK1/DRQ1        pins 1 & 2 closed   pins 1 & 2 closed

     DACK3/DRQ3        pins 2 & 3 closed   pins 2 & 3 closed

