IBM BDM-610000049 multiPort Parallel Port Control, multiPort Floppy Drive, Watchdog Timer Control

Memory Map	59
I/O Address Map	60
Hardware Interrupts	61
multiPort: Advanced Digital I/O Ports (aDIO™)	62
Digital I/O Register Set	62
Port 1 Data register is a read/write byte direction	64
Interrupts	64
Advanced Digital Interrupts	64
Event Mode	64
Match Mode	64
Strobe Mode	65
Wake-on-aDIO	65
multiPort: Parallel Port Control	66
multiPort: Floppy Drive	66
AC’97 Audio	66
Ethernet (10/100Base-T and -TX)	66
IDE Controller Configuration	67
Cable Modes	67
Cable Detection	67
Device and Host Mode	67
Host Determination of Cable Type	67
Device Detect	67
Legacy Mode and Native Mode IDE	68
Legacy Mode	68
Native Mode	68
Configuring the ATA/IDE Disk Chip Socket	68
Real Time Clock Control	69
Overview	69
Accessing the RTC Registers	69
Watchdog Timer Control	71
Thermal Management	72
Thermal Monitor	72
Fan Mode	72
Further Temperature Reduction	72
Power Management	73
Enabling Enhanced Intel SpeedStep Technology (PX only)	73
Advanced Configuration and Power Interface (ACPI)	73
Power Button Modes	73
Low-Power Wake Options	73
AT vs. ATX Power Supplies	74
ATX Power Supply Signals	74
Reducing Power Consumption	75
Multi-Color LED	76
Reset Status Register	77
DVMT Mode Select	79

BDM-610000049 Rev G : vii