Installation guide

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AHA-2840A/2842A Installation Guide
Part Number: 510590-00, Rev B
Print Spec Number: 492663-00
Current Date: 5/9/96 ECN Date: 6/3/96
Getting Started
This guide tells you how to install and configure
the AHA
™
-2840A/2842A SCSI host adapters. With
the exception of the AHA-2842A floppy drive con-
troller, the installation procedure is the same for
both host adapter models. (See Controlling Floppy
Drives on page 3.)
Here is an overview of host adapter installation:
1 Insert the host adapter in a VL-Bus
™
slot in your
computer.
2 Connect SCSI cables and SCSI peripherals.
3 Terminate the SCSI bus.
4 Adjust host adapter configuration, if necessary,
by setting switches and running the SCSISelect
™
utility.
5 Load software, if necessary.
The following sections explain each installation step.
Board Layout
This figure identifies the major AHA-2840A/2842A
components. The following table describes each
component.
Location Description Location Description
J1 External LED Connector S1 Switch Block
J2 Floppy Drive Connector* U1 Floppy Drive Controller*
J3 Internal SCSI Connector U6 VL-Bus to Adapter Interface
J4 External SCSI Connector U8 Host Adapter BIOS ROM
J5 Write-back Enable Jumper U9 AIC-7770 Bus Master Chip
*AHA-2842A only
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J1 S1 J2 U1 J3
U9U8
J4
U6J5
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