
J-MARK COMPUTER CORPORATION

5TXC

Processor         CX 6X86/CX 6X86/CX 686MX/IBM 6X86/AM K5/AM K6/Pentium
Processor Speed   90/100/120/133/150/166/200/233/266/300MHz
Chip Set          Intel
Video Chip Set    None
Maximum Onboard   512MB (EDO supported)
Memory
Maximum Video     None
Memory
Cache             256/512KB
BIOS              Award
Dimensions        250mm x 220mm
I/O Options       32-bit PCI slots (4), floppy drive interface, green PC
                  connector, IDE interfaces (2), parallel port, PS/2 mouse
                  interface, serial ports (2), IR connector, USB connectors
                  (2), ATX power connector
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  ATX power                 ATX        Parallel port             J3
  connector

  Serial port 2             CN1        Floppy drive              J6
                                       interface

  Serial port 1             CN2        IDE interface 1           J9

  Power LED &               C1         IDE interface 2           J10
  keylock

  Speaker                   C2         IR connector              J15

  Reset switch              C3         USB connector 1           J16

  Turbo LED                 C4         USB connector 2           J17

  Turbo switch              C5         Soft off power            J20
                                       supply

  CPU fan power             C6         IDE interface LED     J21/pins 1 &
                                                                  3

  Chassis fan power        FAN2        Green PC connector    J21/pins 2 &
                                                                  4

  Chassis fan power        FAN3        32-bit PCI slots       PC1  PC4

  PS/2 mouse                J1
  interface

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     CMOS memory normal operation            JP2           Pins 2 & 3
                                                              closed

      CMOS memory clear                       JP2           Pins 3 & 4
                                                              closed

      Flash BIOS voltage select 12v           JP3           Pins 1 & 2
                                                              closed

      Flash BIOS voltage select 5v            JP3           Pins 2 & 3
                                                              closed

              SIMM CONFIGURATION

      Size          Bank 0          Bank 1

      8MB         (2) 1M x 36        None

      16MB        (2) 2M x 36        None

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

      24MB        (2) 2M x 36    (2) 1M x 36

      32MB        (2) 4M x 36        None

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

      40MB        (2) 4M x 36    (2) 1M x 36

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

      64MB        (2) 8M x 36        None

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

      72MB        (2) 8M x 36    (2) 1M x 36

      80MB        (2) 8M x 36    (2) 2M x 36

      96MB        (2) 8M x 36    (2) 4M x 36

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

     128MB        (2) 16M x 36       None

     136MB        (2) 16M x 36   (2) 1M x 36

     144MB        (2) 16M x 36   (2) 2M x 36

     160MB        (2) 16M x 36   (2) 4M x 36

     192MB        (2) 16M x 36   (2) 8M x 36

     256MB        (2) 16M x 36   (2) 16M x 36

  Note: Board accepts EDO memory.

              DIMM CONFIGURATION

      Size          Bank 0          Bank 1

      32MB        (1) 2M x 64    (1) 2M x 64

      48MB        (1) 2M x 64    (1) 4M x 64

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

     128MB        (1) 8M x 64    (1) 8M x 64

     256MB        (1) 16M x 64   (1) 16M x 64

     512MB        (1) 32M x 64   (1) 32M x 64

              CACHE CONFIGURATION

      Size          Bank 0           TAG

     256KB        (2) 32K x 32   (1) 32K x 8

     512KB        (2) 64K x 32   (1) 32K x 8

                        CPU SPEED SELECTION (CX 6X86)

   CPU     Clock   Multiplier   U22/1   U22/2   U22/3   U22/4   U22/5   U22/6
  speed    speed

  150MHz   60MHz       2x        Off     Off     On     Off     Off      On

  166MHz   66MHz       2x        Off     Off     On     Off     Off     Off

  200MHz   75MHz       2x        Off     Off     On     Off      On     Off

                       CPU SPEED SELECTION (CX 6X86MX)

   CPU     Clock   Multiplier   U22/1   U22/2   U22/3   U22/4   U22/5   U22/6
  speed    speed

  166MHz   66MHz      2.5x       Off     On      On     Off     Off      On

  200MHz   75MHz       2x        Off     Off     On     Off      On     Off

  233MHz   66MHz       3x        Off     On      Off    Off     Off     Off

                        CPU SPEED SELECTION (IBM 6X86)

   CPU     Clock   Multiplier   U22/1   U22/2   U22/3   U22/4   U22/5   U22/6
  speed    speed

  150MHz   60MHz       2x        Off     Off     On     Off     Off      On

  166MHz   66MHz       2x        Off     Off     On     Off     Off     Off

  200MHz   75MHz       2x        Off     Off     On     Off      On     Off

                         CPU SPEED SELECTION (AM K5)

   CPU     Clock   Multiplier   U22/1   U22/2   U22/3   U22/4   U22/5   U22/6
  speed    speed

  100MHz   66MHz      1.5x       Off     Off     Off    Off     Off     Off

  133MHz   66MHz      1.5x       Off     Off     Off    Off     Off     Off

  166MHz   66MHz      2.5x       Off     On      On     Off     Off     Off

                         CPU SPEED SELECTION (AM K6)

   CPU     Clock   Multiplier   U22/1   U22/2   U22/3   U22/4   U22/5   U22/6
  speed    speed

  166MHz   66MHz      2.5x       Off     On      On     Off     Off     Off

  200MHz   66MHz       3x        Off     On      Off    Off     Off     Off

  233MHz   66MHz      3.5x       Off     Off     Off    Off     Off     Off

  266MHz   66MHz       4x        On      Off     On     Off     Off     Off

  300MHz   66MHz      4.5x       On      On      On     Off     Off     Off

                         CPU SPEED SELECTION (INTEL)

   CPU     Clock   Multiplier   U22/1   U22/2   U22/3   U22/4   U22/5   U22/6
  speed    speed

  90MHz    60MHz      1.5x       Off     Off     Off    Off     Off      On

  100MHz   66MHz      1.5x       Off     Off     Off    Off     Off     Off

  120MHz   60MHz       2x        Off     Off     On     Off     Off      On

  133MHz   66MHz       2x        Off     Off     On     Off     Off     Off

  150MHz   60MHz      2.5x       Off     On      On     Off     Off      On

  166MHz   66MHz      2.5x       Off     On      On     Off     Off     Off

  200MHz   66MHz       3x        Off     On      Off    Off     Off     Off

  233MHz   66MHz      3.5x       Off     Off     Off    Off     Off     Off

                           CPU VOLTAGE SELECTION

               Voltage                                JP4

                2.1v                           Pins 1 & 2 closed

                2.8v                           Pins 7 & 8 closed

                2.9v                       Pins 1 & 2, 7 & 8 closed

                3.2v                       Pins 5 & 6, 7 & 8 closed

                3.3v                    Pins 1 & 2, 5 & 6, 7 & 8 closed

                3.45v                   Pins 3 & 4, 5 & 6, 7 & 8 closed

                3.52v                   Pins 1 & 2, 3 & 4, 5 & 6, 7 & 8
                                                    closed

