Dell Inspiron 3800 User Manual Page 21
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- Table of contents
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Table 5 provides a map of the upper memory area. Some of these addresses are dedicated to various system devices, such as the system/video
basic input/output system (BIOS). Others are available for use by expansion cards and/or an expanded memory manager (EMM).
When the microprocessor or a program addresses a location within the upper memory area, it is physically addressing a location within one of
these devices.
Table 5. Upper Memory Map
I/O Memory Map
Table 6 provides a map of memory addresses reserved by the system for peripheral I/O devices. Use the information in Table 6 to determine if the
memory address of an external peripheral (such as a PC Card) conflicts with a memory address reserved by the computer.
Check the documentation of the external I/O device to determine its memory address. If there is a conflict with a memory address reserved by the
computer, change the address of the device.
To view I/O addresses in Windows 98, click the Start button, point to Settings, and click Control Panel. Double-click the System icon. Click the
Device Manager tab, and then double-click Computer.
To view I/O addresses in Windows NT, start the Windows NT Diagnostics in the Administrative Tools (Common) folder.
To view I/O addresses in Windows 2000, click the Start button, point to Settings, and click Control Panel. Double-click the System icon. Click
the Hardware tab, and then click Device Manager.
Table 6. I/O Memory Map
00500h-005FFh
MS-DOS®and BASIC work area
00600h-9FBFFh
User memory
Address Range
Use
0009FC00-0009FFFF
PS/2-mouse data area
000A0000-000BFFFF
Video random-access memory (RAM)
000C0000-000CFFFF
Video BIOS
000CC000-000CDFFF
Reserved for PC Card
000F0000-000FFFFF
System BIOS
00100000-03FFFFFF
High memory area
FD000000-FDFFFFFF
Video RAM
FF200000-FF2FFFFF
Video RAM
FFFE0000-FFFFFFFF
BIOS ROM
Address
Device
0000-001F
DMA controller #1
0020-003F
Interrupt controller #1
0040-005F
System timers
0060-006F
Keyboard controller
0070-007F
RTC and nonmaskable interrupt (NMI) enable
0080-009F
DMA page registers
00A0-00BF
Interrupt controller #2
00C0-00DF
DMA controller #2
00F0-00FF
Math coprocessor
0170-0177
CD-ROM drive controller
01F0-01F7
Hard-disk drive controller
0210-0217
Audio controller
0220-022F
Audio controller
0270-0277
Fast IR
0376-0376
Integrated drive electronics (IDE) controller
0378-037F
LPT1
- Storage Devices 2
- Audio Devices 5
- Embedded Numeric Keypad 6
- Key Combinations 6
- Touch Pad and Track Stick 8
- PC Cards 10
- Display 12
- Extended Desktop Mode 13
- Notes, Notices, and Cautions 14
- Typographical Conventions 14
- System Features 15
- IRQ Line Assignments 20
- Memory 20
- About Passwords 23
- Using a Primary Password 23
- Asset Tag Utility 25
- About the I/O Connectors 27
- Audio Connectors 27
- Video Connector 28
- Parallel Port Connector 29
- Docking Connector 29
- USB Connector 29
- PS/2 Connector 29
- Serial Port Connector 30
- AC Power Connector 30
- Infrared Port 31
- AC Adapter 32
- Batteries 32
- Using Key Combinations 39
- Closing the Display 40
- Suspend Mode 40
- Standby Mode 40
- Save-to-Disk Suspend Mode 41
- Back to Contents Page 44
- System Reference 45
- Recommended Tools 46
- ZIF Connectors 47
- Hard-Disk Drive Assembly 49
- Media Bay Devices 50
- Memory Module Cover 50
- Memory Modules 50
- Keyboard Assembly 51
- Microprocessor Module 53
- Display Assembly 55
- Display Assembly Bezel 55
- 12.1-Inch Display LCD Panel 57
- Display Assembly Latch 60
- Palmrest Assembly 60
- Reserve Battery 62
- Bay Latch Assemblies 62
- Modem Assembly 63
- System Board Assembly 64
- Thermal Cooling Assembly 65
- Last revised 10/2/03 66
- Overview 67
- Page 1 Options 68
- Page 2 Options 68
- Page 3 Options 68
- Page 4 Options 69
- Microprocessor 70
- Chip Set and Bus 70
- PC Cards 70
- Connectors 71
- Display 72
- Keyboard 72
- Batteries 72
- AC Adapter 73
- Physical 73
- Environmental (Computer) 73
- Touch Pad 74
- Track Stick 74
- Reference 78
- Installing the System Help 81
- Installing the Video Driver 83
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