Toshiba Satellite 1700 Series Maintenance Manual page 126

3.8 KB-BIOS command support with SYSTEM-BIOS
E5h: Read Block
2nd pram: SMBus destination address
3rd pram: SMBus command register
Return: Byte0= data byte length
Byte1 to N= data1 to dataN
ByteN+1= success (0) /fail (1)
EAh: Get SMBus status
Return: One byte
Bit7: SMI flag
Bit6: SMBus busy
Bit5: SMBus alarm
Bit4: SMBus interrupt
Bit3-1: Reserved
Bit0: Internal flag (ACPI mode)
EEh: Write Byte
2nd pram: SMBus destination address
3rd pram: SMBus command register
4th pram: Significant byte of command parameter
Return: 0=success, 1=fail
EFh: Read Byte
2nd pram: SMBus destination address
3rd pram: SMBus command register
Return: Byte0= Significant byte of received parameter
Byte1= success (0) /fail (1)
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3 Tests and Diagnostics
Satellite 1700 Series Maintenance Manual