Adaptec AHA-2740-T User Manual download pdf (Page 24)

Table 1-1. Host Adapter Components

Location Description

J1 External LED Connector

J2 Floppy Connector (AHA-2742/2742T only)

J3 SCSI Channel A Internal Connector

J4 Floppy Enable Jumper (AHA-2742/2742T only)

J5 SCSI Channel B Internal Connector

(AHA-2740T/2742T only)

J6 SCSI Channel A External Connector

U1 Floppy Controller (AHA-2742/2742T only)

U2 RAM

U5 Host Adapter BIOS

U9 AIC-7770 Bus Master SCSI Chip

U10 AIC-701 Configuration Chip

Default Settings

Your host adapter is already configured for the majority of EISA

class computers. Table 1-2 lists the default settings of your host

adapter. Refer to Chapter 3, Configuring the Host Adapter for

information on changing any of the settings.

Table 1-2. Host Adapter Default Settings

Description Default Setting

Interrupt Level IRQ 11, Level

Sensitive

Bus Release Time 60 BCLKS

Data FIFO Threshold 100%

Host Adapter BIOS Base Address D8000h

Host Adapter SCSI ID Device ID 7

SCSI Bus Parity Check Enabled

SCSI Selection Timeout 256 milliseconds

SCSI Bus Reset at Power-on Enabled

SCSI Bus Termination Enabled

Extended Translation for Drives > 1 GByte Enabled

Support More Than Two Drives Disabled

Support Removable Disks as Fixed Disks Boot Device Only

Adaptec AHA-2740 Series User’s Manual

Stock Number: 510381-00 / Rev. C (Page 1-7)

Print Spec Number: 491709-00 Rev C

Current Date: 9/1/93 ECN Date: 9/14/93

Introduction

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Adaptec AHA-2740-T User Manual Page 24