DISTRIBUTED PROCESSING TECHNOLOGY

PM1554U2, PM2554U2, PM2654U2

Card Type                  Hard drive controller
Chip Set                   Unidentified
Maximum Onboard Memory     256MB DRAM with memory module
I/O Options                SCSI connectors (2), expansion module
                           connectors (2)
Hard Drives supported      Up to 15 Ultra2/LVD Wide SCSI devices

                           Up to 45 Wide SCSI-2 or Ultra-wide SCSI devices
                           with expansion board upgrades
Floppy drives supported    None
Data Bus                   32-bit PCI
Card Size                  Full-length

[Image]

                                CONNECTIONS

          Function             Label           Function           Label

  End connector to memory       J6      68-pin SCSI connector      J11
  accelerator expansion                 Ch. 0 - external
  module

  Header connector to bus       J7      4-pin connector -           P6
  expansion module                      drive active LED

  68-pin SCSI connector C.h     J10
  0 - internal

                        USER CONFIGURABLE SETTINGS

                Function                    Label           Position

  NVRAM reset to default settings             P4        Pins 1 & 2 closed

  NVRAM setup parameters retained             P4        Pins 3 & 4 closed

  Load enabled                                P9        Pins 1 & 2 closed

  Run enabled                                 P9        Pins 3 & 4 closed

                             DIAGNOSTIC LED(S)

    LED          Color           Status               Condition

   LED1       Unidentified         On            Controller is ready;
                                               interrupts are enabled

   LED1       Unidentified        Off          Controller is inactive

   LED1       Unidentified      Blinking        Controller is active

   LED2       Unidentified         On        Non-maskable interrupt (NMI)
                                                      detected

   LED2       Unidentified        Off             NMI not detected

   LED3       Unidentified         On       Controller in idle loop mode

   LED3       Unidentified        Off        Controller not in idle loop
                                                        mode

   LED4       Unidentified         On       Interrupt is being processed

   LED4       Unidentified        Off           Interrupt is not being
                                                      processed

   LED5       Unidentified        Off                 Not used

   LED6       Unidentified         On       Cache controller is using DMA
                                             to perform a data transfer

   LED6       Unidentified        Off       Cache controller is not using
                                                DMA to perform a data
                                                      transfer

   LED7       Unidentified         On         Parity is being generated

   LED7       Unidentified        Off       Parity is not being generated

   LED8       Unidentified         On         Command detected on SCSI

   LED8       Unidentified        Off       Command not detected on SCSI

    IRQ       Unidentified         On        Interrupt has been activated
                                                   on host PCI bus

    IRQ       Unidentified        Off           Interrupt has not been
                                              activated on host PCI bus

[Image]

                                CONNECTIONS

                Function                              Label

  Docking connector to Controller card                  J1

                             DIAGNOSTIC LED(S)

    LED         Color        Status                Condition

   ECCEN        Green          On            Cache is ECC protected

   ECCEN        Green         Off          Cache is not ECC protected

   ECCER         Red           On         Error detected. Cache failure
                                              information reported

   ECCER         Red          Off              Error not detected

                         SIMM MEMORY CONFIGURATION

    Size          Bank 0         Bank 1         Bank 2         Bank 3

    16MB       (1)4MB x 32        None           None           None

    32MB       (1)4MB x 32    (1)4MB x 32        None           None

    48MB       (1)4MB x 32    (1)4MB x 32    (1)4MB x 32        None

    64MB       (1)4MB x 32    (1)4MB x 32    (1)4MB x 32     (1)4MB x 32

    64MB       (1)16MB x 32       None           None           None

    80MB       (1)16MB x 32   (1)4MB x 32        None           None

    128MB      (1)16MB x 32   (1)16MB x 32       None           None

    144MB      (1)16MB x 32   (1)16MB x 32   (1)4MB x 32        None

    160MB      (1)16MB x 32   (1)16MB x 32   (1)4MB x 32        None

    192MB      (1)16MB x 32   (1)16MB x 32   (1)16MB x 32       None

    208MB      (1)16MB x 32   (1)16MB x 32   (1)16MB x 32    (1)4MB x 32

    256MB      (1)16MB x 32   (1)16MB x 32   (1)16MB x 32   (1)16MB x 32

                       MISCELLANEOUS TECHNICAL NOTES

  For information on bus expansion modules, see DISTRIBUTED PROCESSING
  TECHNOLOGY PM3754U2