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Hardware Installation
Adaptec AHA
are designed to operate as shipped in most AT-
class computers. The default settings are:
SCSI Disconnection
SCSI Address
SCSI Parity
Terminators
Terminator Power
Synchronous Negotiation
Interrupt Channel
AT Port Address
Data Transfer Mode
These values are set by the aspi2dos software
driver, provided with Adaptec EZ-SCSI or the
ASW-1210, and by command line options in the
config.sys file (see Software Installation).
Installing the Host Adapter
Turn OFF and disconnect power to the system and ex-
ternal equipment. Always refer to your system's
documentation for instructions on removing the sys-
tem cover and adding option boards.
Remove the cover of your computer to expose
1
the AT expansion slots.
Locate an unused AT expansion slot. AT-type
2
slots have two edge connectors (one 62-pin and
the other 34-pin) in line with each other.
Remove the expansion slot cover for this slot.
3
Align and insert the host adapter into the AT
4
slot. Use the expansion slot cover screw to
secure the host adapter to the frame.
Attach the SCSI cable(s) to the host adapter
5
and the peripherals, using the internal and/or
external connector(s). Be sure to maintain pin-1
orientation throughout the SCSI bus.
If the host adapter is not the first or the last
6
device attached to the cable (i.e., if both inter-
nal and external connectors are used), remove
the SCSI terminators from the host adapter.
Replace the cover and connect the power.
7
™
-1510A AT
Caution
®
-to-SCSI host adapters
Enabled
7
Enabled
Installed
Supplied by host adapter
Disabled
11
340h
Programmed I/O
1
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