ST486SMM View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ST486SMM Datasheet PDF : 34 Pages
| |||
ST486DX - SMM IMPLEMENTATION
to 1 while in normal mode. If NMIEN = 1 when an SMI occurs, an NMI could
occur before the SMM code has initialized the Interrupt Descriptor Table.
Table 2 - 3. SMAR SMM Address Region Registers
Reg. Index = CDh
Reg. Index = CEh
Reg. Index = CFh
7
07
07
43
0
Base Address
Size
A31
A24 A23
A16 A15
A12 see table below
Table 2 - 4. SMAR SIZE FIELD
Bits 3-0
0h
1h
2h
3h
4h
5h
6h
7h
BLOCK SIZE
Disable
4 KBytes
8 KBytes
16 KBytes
32 KBytes
64 KBytes
128 KBytes
256 KBytes
Bits 3-0
8h
9h
Ah
Bh
Ch
Dh
Eh
Fh
BLOCK SIZE
512 KBytes
1 MBytes
2 MBytes
4 MBytes
8 MBytes
16 MBytes
32 MBytes
4 KBytes (same as 1h)
17
Share Link: 