Revised : 28/9/91@20:13EST
OMTI 8140 and 8240 controller
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Number of hard drives supported - 1 or 2
Hard disk drive types -  ST506/412
Hard disk data encoding - MFM
Hard disk transfer rate - 615 KB/s
Hard disk data transfer - 16 bit word on PC/AT bus
Hrad disk sector size - 128, 256, 512 or 1024 bytes per sector
Interleave - 1:1 (with OMTIFMTR software) to 16:1
Hard disk addressing - up to 16 head and up to 2048 cylinders
Floppy disk drives supported (8240 only) - one or two
Floppy disk drive types - 3-1/2", 5-1/4", 48TPI, 96TPI and high density
 (1.2MB) AT compatible
Floppy disk data transfer rate - 250,300 or 500 KB/s

Drive Select Jumpers - Drive C should be internally set as Drive Select 0
(DS0) and drive D should be set as Drive Select 1 (DS1).

Controller Secondary Address Jumpers - 
 jumpering W1 sets the controller to the secondary hard disk address
 jumpering W2 sets the controller to the secondary floppy address

Hard Disk Activity Light Connector - J6

Cable connections (when the mounting bracket is on the right)

8140:  top left, 34-pin control cable
       bottom left, from left to right, 20-pin data cable for drive 2 and
        drive 1

8240: from left to right
      20-pin data cable for drive 2, 20-pin data cable for drive 1, 34-pin
       hard disk control cable, 34-pin floppy disk control cable.

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