
SCIENTIFIC MICRO SYSTEMS

OMTI 5526, OMTI 5529

Data bus: 8-bit, ISA

Size: Half-length, full-height card

Hard drives supported: OMTI 5526:Two MFM ST506/ST412 drives

OMTI 5529:Two RLL ST506/ST412 drives

Floppy drives supported: None

Maximum heads/cyl.: 16 heads and 2048 cylinders

[Image]

                           CONNECTIONS

                  Function                        Location

  34-pin control cable connector-hard drive          J1

  20-pin data cable connector-drive 0                J2

  20-pin data cable connector-drive 1                J3

  4-pin drive power connector                        J4

                        USER CONFIGURABLE SETTINGS

               Function                    Location           Setting

     Factory configured - do not             W9                N/A
      alter

     Factory configured - do not             W10               N/A
      alter

     Factory configured - do not             W11               N/A
      alter

     Factory configured - do not             W12               N/A
      alter

     Not documented                    W17-19 & W26-30         N/A

     BIOS enabled                            W7               open

      BIOS disabled                           W7              closed

     BIOS base address is C800h              W8               open

      BIOS base address is CA00h              W8              closed

     Drive 0 soft sectored                   W11              open

      Drive 0 hard sectored                   W11             closed

     Drive 1 soft sectored                   W14              open

      Drive 1 hard sectored                   W14             closed

                             I/O PORT ADDRESS

          Address                 Jumper W5               Jumper W6

            320h                   open                    open

             324h                  closed                   open

             328h                   open                   closed

             32Ch                  closed                  closed

                       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 with the 5510;
       The jumper settings are the same for the 5526 and the 5526/9

