Filter
Top Products
228 AMD Geode™ SC2200 Processor Data Book
Core Logic Module - Bridge, GPIO, and LPC Registers - Function 0
32580B
3 Keyboard/Mouse Idle Timer SMI Status. Indicates whether or not an SMI was caused by expiration of Keyboard/ Mouse
Idle Timer Count Register (F0 Index 9Eh).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 81h[3] = 1.
2 Parallel/Serial Idle Timer SMI Status. Indicates whether or not an SMI was caused by expiration of Parallel/Serial Port Idle
Timer Count Register (F0 Index 9Ch).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 81h[2] = 1.
1 Floppy Disk Idle Timer SMI Status. Indicates whether or not an SMI was caused by expiration of Floppy Disk Idle Timer
Count Register (F0 Index 9Ah).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 81h[1] = 1.
0 Hard Disk Idle Timer SMI Status. Indicates whether or not an SMI was caused by expiration of Hard Disk Idle Timer Count
Register (F0 Index 98h).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 81h[0] = 1.
Index F6h Second Level PME/SMI Status Register 3 (RC) Reset Value: 00h
The bits in this register contain second level status reporting. Top level status is reported in F1BAR0+I/O Offset 00h/02h[0].
Reading this register clears the status at both the second and top levels.
A read-only “Mirror” version of this register exists at F0 Index 86h. If the value of the register must be read without clearing the SMI
source (and consequently de-asserting SMI), F0 Index 86h can be read instead.
7 Video Access Trap SMI Status. Indicates whether or not an SMI was caused by a trapped I/O access to the Video I/O
Trap.
0: No.
1: Yes.
To enable SMI generation, set F0 Index 82h[7] = 1.
6
Reserved
. Reads as 0.
5 Secondary Hard Disk Access Trap SMI Status. Indicates whether or not an SMI was caused by a trapped I/O access to
the secondary hard disk.
0: No.
1: Yes.
To enable SMI generation, set F0 Index 83h[6] = 1.
4 Secondary Hard Disk Idle Timer SMI Status. Indicates whether or not an SMI was caused by expiration of Secondary
Hard Disk Idle Timer Count register (F0 Index ACh).
0: No.
1: Yes.
To enable SMI generation, set F0 Index 83h[7] = 1.
3 Keyboard/Mouse Access Trap SMI Status. Indicates whether or not an SMI was caused by a trapped I/O access to the
keyboard or mouse.
0: No.
1: Yes.
To enable SMI generation, set F0 Index 82h[3] = 1.
2 Parallel/Serial Access Trap SMI Status. Indicates whether or not an SMI was caused by a trapped I/O access to either the
serial or parallel ports.
0: No.
1: Yes.
To enable SMI generation, set F0 Index 82h[2] =1.
Table 6-29. F0: PCI Header/Bridge Configuration Registers for GPIO and LPC Support (Continued)
Bit Description