System Resources
IRQ
I/O Address (Hex)
Memory Address
(Hex)
DMA
Channel
Audio device 5, 7, 9, 10, 11,
15, or
disabled
SoundBlaster Pro
0220–22F, 0230–23F,
240–24F or 250–25F
WSS
534–537, 608–60B,
E84–E87 or F44–F47h
CONTROL PORT
538–53Fh, D38–D3F,
E88–E8F or FF0–FF7h
None 1 or 0
MIDI PORT
MPU 401
5, 7, 9, or
disabled
300–301h, 310–311h,
320–321h, 330h–331h, or
disabled
None None
Joystick port None 201h None None
Audio device (FM
synthesizer)
None 388–38B None None
PCMCIA controller None 03E0–03E1 None None
PC Card Depends on
the type of PC
Card
Depends on the type of
PC Card
Depends on the
type of PC Card
None
Real time clock 8 0070–0071 None None
TrackPoint III or
mouse
12 0060 and 0064 None None
Math coprocessor
exception
13 None None None
Notes:
Addresses in the parentheses are also used when Extended Capability Port (ECP) is enabled by the
ThinkPad Features program as the printer operating mode.
When you enable ECP as the printer operating mode by the ThinkPad Features program, one of the
choices (including “disabled”) must be selected. When choosing one of DMA channels, you can use only
two from audio device (1st DMA), audio device (2nd DMA), and infrared port DMA.
Appendix A. Avoiding Hardware Conflicts 179
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