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參數(shù)資料
| 型號： | 25818 |
| 英文描述： | Power Management Resume Support for AMD-768? Peripheral Bus Controller Application Note |
| 中文描述： | 電源管理簡歷支持AMD的768？外設(shè)總線控制器應(yīng)用筆記 |
| 文件頁數(shù)： | 10/14頁 |
| 文件大?。?/td> | 214K |
| 代理商： | 25818 |
10
Power Management Resume Support for AMD-768 Peripheral Bus Controller
25818 Rev. 1.01—February 2002
SMI_exit:
RSM
;simplified example for
; exiting SM mode
S_handler_tbl:
DW
DW
DW
DW
DW
DW
DW
DW
offset S0_handler
offset S1_handler
offset rsvd_handler
offset rsvd_handler
offset rsvd_handler
offset S3_handler
offset S4_handler
0ffset S5_handler
;NOTE: the offset of
;
each handler has to
;
be adjusted according
;
to where the SMI
;
handler is installed,
;
with consideration of
;
EIP been normized at
;
at the entry of SMI mode.
Enable PME Pin for Keyboard and Mouse Wake Up Event in S1 State
To allow the system to wake from S1 state through the keyboard or mouse, the Super I/O PME pin
must be enabled in the Super I/O controller. This is done before entering the S1 state within the SMI
handler routine.
The following sample code shows how this can be accomplished.
;enter the configuration mode
MOV
dx, SIO_CFG_ADDR;2Eh or 4Eh depending on
; system implementation
MOV
al, 087h
;config mode command
OUT
dx,al
NOP
NOP
OUT
dx,al
;select device A
MOV
dx, SIO_CFG_ADDR
MOV
al, 7
OUT
dx, al
MOV
al, 0ah
INC
dx
OUT
dx, al
DEC
dx
;select device A
;SIO data port
;enable device A
MOV
al, 30h
OUT
dx, al
MOV
al, 1
INC
dx
OUT
dx, al
DEC
dx
;register 30h
;set enable bit
;clear keyboard and mouse status
MOV
al, 0f3h
;register 0f3h
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