Adaptec 1742A User Manual
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Contents
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PreparationThe configuration options for the AHA-1740A/1742A/1744 can beselected from software. Therefore, jumpers do not need to bechecked before installing the AHA-1740A/1742A/1744 into theEISA system.One exception is the AHA-1742A, since it contains an on-boardfloppy controller. The on-board floppy controller is shipped with ajumper installed at J6, position 6, floppy enabled. If the floppycontroller on the AHA-1742A is not used, this jumper should beremoved. Only one floppy controller per EISA system can beenabled.The AHA-1740A/1742A/1744 has a jumper that can be changed.This is the jumper block labeled J4, near the external connector.This determines whether or not the AHA-1740A/1742A/1744 willprovide termination power to the SCSI bus. By default, thejumper is installed and termination power is provided by the hostadapter. In general, the host adapter should always supply termi-nator power. However, no more than five SCSI devices should beconfigured to supply terminator power to a single SCSI bus.adaptec AHA-1740A/1742A/17442-2 |
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