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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？外設總線控制器應用筆記 |
| 文件頁數(shù)： | 13/14頁 |
| 文件大?。?/td> | 214K |
| 代理商： | 25818 |
13
25818 Rev. 1.01—February 2002
Power Management Resume Support for AMD-768 Peripheral Bus Controller
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
;enable access to 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 wake-up status
MOV
al, 0e3h
OUT
dx, al
INC
dx
IN
al, dx
DEC
dx
;register 0e3h
;read to clear status
;enable keyboard and mouse wake-up via PANSW_OUT (PSOUT)
MOV
al, 0e0h
;register 0e0h
OUT
dx, al
INC
dx
MOV
al, 0e3h
OUT
dx, al
DEC
dx
;exit configuration mode
MOV
al, 0aah
OUT
dx, al
;exit command
The PSOUT function must be disabled when resuming from the S3 state. The processor begins execu-
tion from the reset vector when transitioning from S3 to Full On state. The PSOUT function can be
disabled when the Super I/O controller is reprogrammed with its initial values by the BIOS initializa-
tion sequence.
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