82443MX Datasheet, PDF (63/173 Pages) Intel Corporation – PCIset

82443MX PCIset
WARNING:
The Variable I/O Ranges should not be set to conflict with the Fixed I/O Ranges. Unpredictable results may occur if the
configuration software allows any I/O range conflicts to happen. Hardware checks are not performed for programming
conflicts.
Table 35. Variable I/O Decode Ranges (Available I/O Space is 0 - 64KB)
Range Name
Mappable
Size
(Bytes)
Target
IDE
Anywhere in 64K I/O Space
16
IDE Unit
USB
Anywhere in 64K I/O Space
32
USB Unit
SMBus
Anywhere in 64K I/O Space
16
SMBus Unit
AC’97 Mixer
Anywhere in 64K I/O Space
256 AC’97 Unit
AC’97 Bus Master (Audio) Anywhere in 64K I/O Space
64
AC’97 Unit
AC’97 Bus Master (Modem) Anywhere in 64K I/O Space
64
AC’97 Unit
AC’97 Modem
Anywhere in 64K I/O Space
128 AC’97 Unit
GPIO
Anywhere in 64K I/O space
256 GPIO Unit
Parallel Port
1 of 3 ranges in 64K I/O Space
8
X-bus Peripheral
Serial Ports 1 & 2
1 of 8 Ranges in 64K I/O Space
8
X-bus Peripheral
Floppy Disk Controller
1 of 2 Ranges in 64K I/O Space
8
X-bus Peripheral
MIDI
1 of 2 Ranges in 64K I/O Space
2
X-bus Peripheral
MSS
1 of 4 Ranges in 64K I/O Space
8
X-bus Peripheral
SoundBlaster
1 of 4 Ranges in 64K I/O Space
32
X-bus Peripheral
X-bus Programmable Chip Anywhere in 64K I/O Space
Select decode ranges [0:1]
1-16 X-bus Peripheral
Figure 4 shows how the 440MX uses the PCI configuration space.
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