Dell Latitude LM Bedienerhandbuch

P/N 89180 Rev. A01 June 1997 ®

www.dell.com

Dell

Latitude

Documentation Update

his document updates information contained in the

online Dell Latitude LM User’s Guide and the Dell

Latitude LM Reference and Troubleshooting Guide.

ew Microprocessor Options

The Dell Latitude LM is now available with a

166-megahertz (MHz) or 133-MHz Intel®Pentium®

microprocessor with MMX™technology.

Current application programs not designed specifically

for MMX technology should have a small improvement

in performance when run on a system with a Pentium

microprocessor with MMX technology. Software written

specifically to take advantage of MMX technology

(which will be labeled “Designed for Intel MMX”) will

have a greater improvement in performance, depending

on the type of application program.

The Pentium microprocessor with MMX technology has

twice the internal cache memory (32 kilobytes [KB]) as

the standard Pentium microprocessor.

To see the technical specifications of the new micro-

processors, search on “microprocessor specifications” in

the online System User’s Guide. The online guide is in

the Dell Accessories folder or program group.

ew Memory Module Support

The Dell Latitude LM now supports 32-megabyte (MB)

memory modules. With the 8 MB of standard non-

removable memory on the system board and two 4-MB

memory modules standard with every Latitude LM, the

computer now supports a maximum of 72 MB of system

memory. The following memory module combinations

are possible:

•24 MB — Install two 8-MB memory modules.

•40 MB — Install two 16-MB memory modules.

•72 MB — Install two 32-MB memory modules.

ew Memory Specifications

The Dell Latitude LM now supports extended-data out

(EDO) memory. EDO memory technology improves per-

formance over fast-page-mode technology by using a

shorter page-mode cycle time while accessing data

within a single page of memory. See the following table

for the updated memory specifications.

ew Video Controller

The Dell Latitude LM’s standard video subsystem now

includes 1.1 MB of video memory. For more information

about new video modes and resolutions, see “Using the

Display,” or search on “text modes” and “graphics

modes” in the online System User’s Guide.

To see the technical specifications of the new video sub-

system, search for “video specifications” in the System

User’s Guide. The online guide is in the Dell Accessories

folder or program group.

etup Program Changes

The following information updates Chapter 2, “Custom-

izing System Features,” in the Reference and

Troubleshooting Guide:

•The default setting for the AC POWER SAVE option in

the Power menu is OFF.

•The ALARM RESUME TIME option in the Power menu

tells the computer an exact time to resume normal

operation when it is in suspend mode.

Memory

Architecture. . . . . . . EDO

Memory module

capacities. . . . . . . . . 4, 8, 16, and 32 MB; must be

installed in matched pairs

(two 4-MB modules, two

8-MB modules, two 16-MB

modules, or two 32-MB

modules). Both EDO and

fast-page-mode modules are

supported in matched pairs.

Standard RAM . . . . 16 MB; 8 MB on system

board and two 4-MB EDO

memory modules installed

Maximum RAM . . . 72 MB

Memory access time:

tRAC . . . . . . . . 60 ns

tCAC . . . . . . . . 15 ns

BIOS address . . . . . F000:0000

NOTE: For the full name of an abbreviation or acronym used

in this table, see the Glossary in the online System User’s

Guide.

Figure 1. Main Screen of the Dell Diagnostics

ell Diagnostics Changes

This section updates Chapter 4, “Running the Dell Diag-

nostics,” in the Reference and Troubleshooting Guide.

Main Screen

The main screen of the diagnostics (see Figure 1) has

been revised to show more detail in the System Configu-

ration area.

Test Limits Under Main Menu Options

In the Test Limits option, press the <PAGE DOWN>key to

select the next menu or submenu in the Test Limits cate-

gory. Press the <ESC>key to return to the main Test

Limits menu.

RAM

System Set

Video

Keyboard

Mouse

Diskette Drives

Hard-Disk Drives (Non-SCSI)

IDE CD ROM Drives

Serial/Infrared Ports

Parallel Ports

SCSI Devices

Network Interface

Audio

* On the Dell Latitude LM, a CD-ROM drive installed in the options bay is recognized as IDE Drive 1.

Dell Computer Corporation

Dell Latitude LM Diagnostics Version

X.XX

Processor(s) Pentium MMX

Memory 16 MB

Secondary Cache 256

Video SVGA,1.1 MB

Keyboard 101 Key

Diskette Drive(s) A:1.4MB,B:NONE

Pointing Device Integrated

Parallel Ports 1

Mouse Integrated

Modems None

SCSI Devices None

Network Interface None

Serial/IR Ports Integrated

IDE(0) 809MB, 1571 Cyl, 16 Hd, 63 Sec

IDE(1)* None

USB(0) None

System Configuration

Available Test Groups

Main: Run seLect Subtest Options Test_limits About Key_help Quit

Display the Run Menu. Press Q to Quit

USB Subtests Added

The following subtests have been added to the System

Set Test Group. These subtests run only if the computer

has a Universal Serial Bus (USB) connector.

•The USB Register Test checks the onboard registers

of the USB interface. This subtest does not test USB

peripherals.

•The USB Memory Structure Test monitors the abil-

ity of a USB controller to process a simple set of

memory-resident instructions.

etting Help

Many of the telephone numbers in Chapter 5, “Getting

Help,” of the Reference and Troubleshooting Guide have

changed.

Use the most up-to-date numbers, which are in the “Call-

ing Dell” section of the online System User’s Guide. The

System User’s Guide is in the Dell Accessories folder or

program group.

____________________

Information in this document is subject to change without notice.

Trademarks used in this text: Dell, the DELL logo, and Latitude are registered trademarks of Dell Computer Corporation; Intel and Pentium are regis-

tered trademarks and MMX is a trademark of Intel Corporation. Other trademarks and trade names may be used in this document to refer to either the

entities claiming the marks and names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names

other than its own.

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