Chapter Two; Installation; Hardware Installation - Adaptec AHA-1740A Installation Manual

Chapter Two
Installation
Hardware Installation
The Adaptec AHA-1740Nl 742Nl 744 EISA-to-Fast SCSI host
adapter has been designed to operate as shipped in standard
EISA class computers. The board, or the system in which it is
installed, is normally shipped with a configuration diskette
which permits the board to be configured to the actual slot loca-
tion in which it is installed. Unlike A'l'®ISA (Industry Stand-
ard Architecture) boards, but like Micro Channel® boards, EISA
(Extended Industry Standard Architecture) boards do not nor-
mally require hardware jumpers. An exception is configuration
of the floppy disk controller on the AHA-1742A.
Ensure that you have the correct version of the AHA-17 40/17 44
for your system. The AHA-1740Nl 742A supports the more com-
mon single-ended SCSI interface. The AHA-1744 supports the
differential interface, more common on SCSI peripherals for
minicomputers. While the two use the same signal protocol,
they are not electrically compatible.
To perform hardware installation:
1. Turn off the power to your computer system.
2 . Remove the cover of your EISA personal computer to expose
the EISA bus slots on the motherboard.
3. Locate an unused EISA slot in your system which supports
bus master operations. Refer to your host system documen-
tation for details.
WARNING
Connection of a single-ended board to a differential driver or
vice versa may cause permanent damage to one or both
components.
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