I/O Map; Table 3-6. Upper Memory Map; Table 3-7. I/O Map - Dell Latitude XPiCD Reference Manual

Table 3-6. Upper Memory Map

Address Range
0009FC00–0009FFFF
000A0000–000BFFFF
000C0000–000C7FFF
000C8000–000CFFFF
000D0000–000DBFFF
000F0000–000FFFFF
00100000–0010FFEF
0010FFF0–1FFFFFFF
20000000–FFFBFFFF
FFFC0000–FFFFFFFF
NOTE: For the full name of an abbreviation or acronym
used in this table, see the Glossary in the online System
User's Guide.

I/O Map

Table 3-7 provides a map of memory addresses reserved by
the system for peripheral I/O devices. Use the information in
Table 3-7 to determine if the memory address of an external
peripheral (such as a PC Card) conflicts with a memory
address reserved by the system.
Check the documentation of the external I/O device to deter-
mine its memory address. If there is a conflict with a memory
address reserved by the system, change the address of the
device.
Use
PS/2-mouse data area
Video RAM
Video BIOS
Available
Reserved for PC Card
System BIOS
High memory area
Extended memory
Reserved
BIOS ROM

Table 3-7. I/O Map

Address Device
0020-003F Interrupt controller #1
0040-005F System timers
0060-006F Keyboard controller
0070-0071 RTC and NMI enable
0080-009F DMA page registers
00A0-00BF Interrupt controller #2
00C0-00DF DMA controller #2
00F0 Coprocessor busy clear
00F1 Coprocessor busy reset
00F8-00FF Coprocessor
01F0-01F8 Hard-disk drive controller
0170–0178 CD-ROM controller
0200-0207 Joystick controller
0220-022F Audio controller
0278-027F LPT2
02F8-02FF COM2
0378-037F LPT1
03C0-03DF VGA
03E0–03E1 PC Card controller
03F0-03F7 Diskette controller
03F8-03FF COM1
NOTE: For the full name of an abbreviation or
acronym used in this table, see the Glossary in the
online System User's Guide.
Troubleshooting Your Computer 3-17