Adaptec AHA-1540B Installation Guide download pdf (Page 4)

Default Settings

The AHA-1540CP/1542CP operates correctly with

the factory default settings in most PCs. Plug and

Play may override some settings when it assigns sys-

tem resources. The default settings are listed in the

following table. See Host Adapter Switches on page 11,

and Configuring the SCSI Bus on page 8, to learn how

to change settings.

Settings may be overridden by Plug and Play during the boot process.

Settings are valid only if the host adapter BIOS is enabled. Host adapter BIOS

can be disabled from the switch and SCSISelect.

Dynamically Scan SCSI Bus for BIOS Devices must be enabled for this option to

function.

Settings from Switches: Defaults

Plug and Play Functions Enabled

I/O Port Address

330h-333h

Floppy Controller (AHA-1542CP only) Enabled

Host Adapter BIOS Address

1 2

Enabled/ DC000h

Global Settings from SCSISelect:

Host Adapter Interrupt (IRQ) Channel

IRQ 11

Host Adapter DMA Channel

Host Adapter SCSI ID 7

SCSI Parity Checking Enabled

DMA Transfer Rate 5.0 MBytes/sec

Host Adapter SCSI Termination Automatic

Reset SCSI Bus at Power-on Enabled

“Plug and Play” SCAM Support Enabled

“Plug and Play” IRQ 9 and DMA 0 Support Disabled

Host Adapter BIOS (Configuration Utility Reserves BIOS

Space)

Enabled

Extended BIOS Translation for Drives >1 GByte

Disabled

Support Removable Disks Under BIOS as Fixed Disks

Boot Only

Dynamically Scan SCSI Bus for BIOS Devices

Disabled

BIOS Support for More Than 2 Drives

Disabled

BIOS Support for INT 13h Extensions

Enabled

BIOS Support for Bootable CD-ROMs

Disabled

Immediate Return on Seek Command

Enabled

Display <Ctrl><A> Messages during BIOS Initialization

Enabled

Individual Device Settings from SCSISelect:

Enable Sync Negotiation Yes

Enable Fast SCSI Yes

Enable Disconnection Yes

Send Start Unit Command

Include in BIOS Scan

2 3

Yes

1 2 3 4 5 6 7 8 9 ... 13 14

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Adaptec AHA-1540B Installation Guide Page 4

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