Specifications

DK440LX SPECIFICATION UPDATE

DOCUMENTATION CHANGES

The Documentation Changes listed in this section apply to the

DK440LX Motherboard Technical Product

Specification

(Order Number 682717). All Documentation Changes will be incorporated into a future version

of that specification.

1. Revision of Section 3.4, PCI IDE Support

Section 3.4, PCI IDE Support, will be replaced in its entirety as follows:

If Auto is selected as a primary or secondary IDE device (see Section 4.2.2) in Setup, the BIOS automatically

sets up the two local-bus IDE connectors with independent I/O channel support. The IDE interface supports

hard drives up to PIO Mode 4 and recognizes ATAPI devices, including CD-ROM drives, tape drives and

Ultra DMA drives (see Section 6.2 for the supported version of ATAPI). Add-in ISA IDE controllers are not

supported. The BIOS determines the capabilities of each drive and configures them so as to optimize

capacity and performance. To take advantage of the high-capacity storage devices, hard drives are

automatically configured for logical block addressing (LBA) and to PIO Mode 3 or 4, depending on the

capability of the drive. To override the autoconfiguration options, use the specific IDE device options in

Setup. The ATAPI specification recommends that ATAPI devices be configured as shown in Table 54.

2. Revision of Section 6.3, BIOS Beep Codes

Section 6.3, BIOS Beep Codes, will be replaced in its entirety as follows:

BIOS BEEP CODES

Whenever a recoverable error occurs during Power-On Self Test (POST), the BIOS displays an error

message describing the problem. The BIOS also issues a beep code (one long tone followed by two short

tones) during POST if the video configuration fails (no card installed or faulty) or if an external ROM module

does not properly checksum to zero.

An external ROM module (e.g video BIOS) can also issue audible errors, usually consisting of one long tone

followed by a series of short tones. For more information on the beep codes issued, check the

documentation for that external device.

There are several POST routines that issue a POST Terminal Error and shut down the system if they fail.

Before shutting down the system, the terminal-error handler issues a beep code signifying the test point error,

writes the error to I/O port 80h, attempts to initialize the video and writes the error in the upper left corner of

the screen (using both mono and color adapters).

If POST completes normally, the BIOS issues one short beep before passing control to the operating system.