
SCIENTIFIC MICRO SYSTEMS

OMTI 5510, OMTI 6510

Data bus: 8-bit, ISA/AT

Size: Half-length, full-height card

Hard drives supported: OMTI 5510: Two MFM ST506/412 drives

OMTI 6510: Two RLL ESDI drives

Floppy drives supported: None

Maximum Hds/Cyls: 16 heads and 2048

Interleave 1:1

[Image]

Note: Pin 1 on cable connectors is shown for the 5510.

For the 6510, pin orientation is opposite, with pin 1 located in the upper
left corner.

                           CONNECTIONS

                  Function                        Location

  34-pin control cable connector-hard drive          J2

  20-pin data cable connector-drive 0                J3

  20-pin data cable connector-drive 1                J4

                        USER CONFIGURABLE SETTINGS

              Function                    Location            Setting

     BIOS enabled                           W7                open

      BIOS disabled                          W7               closed

     BIOS address is C8000h                 W8                open

      BIOS address is CA000h                 W8               closed

     Drive 0 soft sectored (5510            W11               open
      only)

      Drive 0 hard sectored (5510            W11              closed
      only)

     Drive 1 soft sectored (5510            W14               open
      only)

      Drive 1 hard sectored (5510            W14              closed
      only)

                             I/O PORT ADDRESS

          Address                 Jumper W5               Jumper W6

            320h                   open                    open

             324h                  closed                   open

             328h                   open                   closed

             32Ch                  closed                  closed

                       SECTOR CONFIGURATION JUMPERS

  Bytes per Sector         SPT            Jumper W9         Jumper W10

      512                   18              open               open

      256                   32             closed              open

     512                   17              open              closed

      1024                  9              closed             closed

                            DRIVE CONFIGURATION

       Drive            Drive 0        Drive 1

          Type        Jumper W12     Jumper W13      Jumper       Jumper
                                                      W15          W16

     Fixed              open           open          open        open

      Reserved          closed          open         closed       open

      Reserved           open          closed         open       closed

      Removable         closed         closed        closed      closed

                         DRIVE TYPE CONFIGURATION

  DRIVE 1     DRIVE 0        BIOS
                           #1002411

  Jumepr W1    Jumper     Jumper W3     Jumper    Cyl.    Hds.   Precomp
                W2                        W4

   closed     closed        closed      closed     2      612      400

    open      closed         open       closed     2      612      128

   closed      open         closed       open      6      306      128

    open       open          open        open      4      306      128

  DRIVE CONFIGURATION JUMPERS - BIOS #1002450, #-2451, -#-2302 & #-2570,

    W1         W2        W3         W4        HDS       CYLS       WPC

  closed     closed    closed     closed       15        918       none

  closed     closed    closed      open        4         640       256

  closed     closed     open      closed       5         645       320

  closed     closed     open       open        4         512       256

  closed      open     closed     closed       7         987       none

  closed      open     closed      open        2         612       400

  closed      open      open      closed       7         634       320

  closed      open      open       open        6         306       128

   open      closed    closed     closed       11        918       none

   open      closed    closed      open        8         512       256

   open      closed     open      closed       11        754       none

   open      closed     open       open        4         612       256

   open       open     closed     closed       5         697       256

   open       open     closed      open        2         612       128

   open       open      open      closed       6         640       256

   open       open      open       open        4         306       128

            DRIVE CONFIGURATION JUMPERS - BIOS #1002452

    W1       W2        W3       W4       HDS.     CYLS.      WPC

  closed    closed   closed    closed      3       1024      512

   open     closed   closed    closed      5       1024      512

  closed    closed    open     closed      7       1024      512

   open     closed    open     closed      8       1024      512

  closed    open     closed    closed      2       612       128

   open     open     closed    closed      4       612       128

  closed    open      open     closed      2       615       128

   open     open      open     closed      4       615       128

  closed    closed   closed    open        4       512       256

   open     closed   closed    open        6       512       256

  closed    closed    open     open        8       512       256

   open     closed    open     open        3       697       128

   open     open     closed    open        9       925       128

  closed    open     closed    open        5       697       128

  closed    open      open     open        6       306       128

   open     open      open     open        4       306       128

            DRIVE CONFIGURATION JUMPERS - BIOS #1002571

    W1       W2        W3       W4       HDS.     CYLS.      WPC

  closed    closed   closed    closed      8       1024      none

   open     closed   closed    closed      4       612       none

  closed    open     closed    closed      6       615       none

   open     open     closed    closed      4       616       none

  closed    closed    open     closed      7       987       none

   open     closed    open     closed      7       1166      none

  closed    open      open     closed     11       1224      none

   open     open      open     closed     15       1224      none

  closed    closed   closed    open        4       820       none

   open     closed   closed    open        6       820       none

  closed    open     closed    open        5       1024      none

   open     open     closed    open        9       1024      none

  closed    closed    open     open        5       830       none

   open     closed    open     open        7       830       none

  closed    open      open     open       10       830       none

   open     open      open     open        4       615       none

                DRIVE CONFIGURATION JUMPERS - BIOS #1002312

    W1         W2         W3         W4       Hds.      Cyls.      Step
                                                       (RWC)       Rate

   open       open       open       open       4        615      25 m sec

   open       open       open      closed      5        987      10 m sec

   open       open      closed      open       4        612      25 m sec

   open       open      closed     closed      8        640      25 m sec

   open      closed      open       open       4         306     25 m sec
                                                       (128)

   open      closed      open      closed      8        612      25 m sec

   open      closed     closed      open       10       830      10 m sec

   open      closed     closed     closed      6        640      25 m sec

  closed      open       open       open       4        306      25 m sec

  closed      open       open      closed      7        830      10 m sec

  closed      open      closed      open       4         612     25 m sec
                                                       (128)

  closed      open      closed     closed      15       918      10 m sec

  closed     closed      open       open       2        615      25 m sec

  closed     closed      open      closed      5         980     25 m sec
                                                       (700)

  closed     closed     closed      open       8        1024     10 m sec

  closed     closed     closed     closed      4        640      25 m sec

                       MISCELLANEOUS TECHNICAL NOTES

   W1 through W4 are used to configure the drive type. To support most of
     the drives on the market, there have been several different BIOS's
  offered. The different BIOS drive type tables are listed above with the
                          proper jumper settings.

