SMBus, ACCESS.bus, BIOS. , SMBus ACPI.
1995 . SMBus BIOS System Management Bus BIOS Interface Specification, . -. BIOS : ( V86), 16- 32-. BIOS Int 15h ( V86), , . ( ) BIOS Int 15h; Int 15h ( ). , . .
SMBus BIOS - : - , . , Write Word. , 7 ( ). .
SMBus , SMI (System Management Interrupt ) . - BIOS , SMI . , SMI, SMM, , , BIOS SMBus.
SMBus:
♦ SMBus Installation Check (01h) ;
♦ SMBus Real Mode Connect (02h) ;
♦ SMBus 16-Bit Connect (03h) 16- ;
♦ SMBus 32-Bit Connect (04h) 32- ;
♦ SMBus Disconnect (05h) ;
♦ SMBus Devi Address (06h) SMBus;
♦ SMBus Critical Messages (07h) , .
SMBus , SMBus . , ( ) . BIOS; , . ; .
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SMBus:
♦ SMBus Request (10h) ;
♦ SMBus Request Continuation (11h) ;
♦ SMBus Request Abort (12h) ;
♦ SMBus Request Data and Status (13h) .
SMBus ACPI. SMBus ACPI SMBus CMI System Management Bus (SMBus) Control Method Interface Specification Version 1.0, 1999 . SMBus . .
♦ ACPI - ( ).
♦ SMBus.
♦ 1.0 1.1 SMBus .
. Smart Battery System Implementers Forum (SBS-IF) Windows 9x/2000, http://www.sbs-forum.org/smbus/.
CMI . , SMBus, CMI, , SMBus BIOS. , PEC, ( 80h).