Scientific Micro Systems:              phone #  1-408-954-1633
SMS OMTI 5510-3 MFM HARD DISK CONTROLLER  CARD JUMPER SETTINGS
JUMPER W-10 ALWAYS STAYS SET.  STANDS FOR 512 BYTES PER SECTOR.
JUMPERS 1-4 ARE THE DRIVE SELECT:

CYLINDERS  HEADS   JUMPERS SHORTED  EXAMPLE DISK DRIVES    Capacity

  612   X  2       3
  306   X  4       NONE
  612   X  4       2                615x4 Seagate ST-225    21Mb
  640   X  4       1,2,3
  645   X  5       1,2,4
  697   X  5       3,4
  306   X  6       1
  640   X  6       4                ST-251  Should use 820x6
  512   X  8       2,3
  634   X  7       1,4
  987   X  7       1,3,4
  754   X 11       2,4
  918   X 11       2,3,4
  918   X 15       1,2,3,4
Other Drives that can use the 612x4 are ST13