![background image](http://html2.mh-extra.com/html/ibm/thinkpad-755cx/thinkpad-755cx_operation-users-manual_3935285244.webp)
Avoiding Hardware Conflicts
The following table summarizes the reserved system resources for
the computer and the ThinkPad Dock I or Dock II. Values in
parentheses are alternative values that are selectable in the
ThinkPad Features program, Easy-Setup, or application programs.
System Resources
IRQ
Memory
Address (Hex)
I/O Address (Hex)
DMA
Channel
Timer
0
None
0040–0043
None
Keyboard
1
None
0060, 0064
None
Serial port 1
4 (or disabled)
None
03F8–03FF (or 02F8–02FF)
None
Serial port 2
3 (or disabled)
None
02F8–02FF (or 03F8–03FF)
None
Serial port 3
4 (or disabled)
None
03E8–03EE (or 02F8–02FF)
None
Serial port 4
3 (or disabled)
None
02E8–02EF (or 03F8–03FF)
None
Parallel port 1
7 (or disabled)
None
03BC–03BE
None
Parallel port 2
7 (or disabled)
None
0378–037A
None
Parallel port 3
5 (or disabled)
None
0278–027A
None
Infrared port
4 (or 3, 5, 10, 11,
15, disabled)
None
01A0–01A7 (or 01B0–01B7,
01C0–01C7, 01D0–01D7)
02E8–02EF (or 03F8–03FF,
02F8–02FF, 03E8–03EF)
0 and 3
or
disable
Diskette controller
6
None
03F0–03F7
2
Video controller
9
A0000–BFFFF
03B4–03B5, 03BA,
03C0–03C9, 03CA, 03CC,
03CE–03CF, 03D4–03D5,
03DA
2DF0, 2DF1, 46E8
None
Mwave DSP device
5 (or 7, 10, 11,
15, disabled)
None
0030, 4E30, BE30, CE30
0 (or 1,
6, 7)
Sound Blaster
7 (or 5, 10, 11,
disabled)
None
0220, 0240
0 (or 1,
6, 7)
MIDI
None
None
0300, 0330
None
Modem
3, 4, disabled
None
03F8, 02F8, 03E8, 02E8
None
Hard disk drive
14
None
01F0–01F7, 03F6–03F7
None
PCMCIA controller
None
None
03E0–03E3
None
PC Card
(Depends on the
type of PC Card)
C0000–DFFFF
None
None
Real-time clock
8
None
0070–0071
None
TrackPoint III or
mouse
12
None
0060, 0064
None
Math coprocessor
exception
13
None
None
None
228
IBM ThinkPad 755CX User's Guide
All manuals and user guides at all-guides.com