IBM 560E Manual De Usuario
Calling Convention
The client can invoke the SMAPI BIOS with a far-call to the entry
point that is specified in the header file. All parameters for the BIOS
and other results are stored in the client data area; the client needs
to prepare an input parameter / output parameter area in its data
area, and informs this area by pushing those pointers onto the its
stack before the far-calls.
point that is specified in the header file. All parameters for the BIOS
and other results are stored in the client data area; the client needs
to prepare an input parameter / output parameter area in its data
area, and informs this area by pushing those pointers onto the its
stack before the far-calls.
The SMAPI BIOS uses the stack/data area directly with the selector
when the BIOS is invoked. Therefore, the caller needs to define the
same privilege level as the BIOS.
when the BIOS is invoked. Therefore, the caller needs to define the
same privilege level as the BIOS.
Parameter Structure
The memory allocation for the input/output field should be prepared
by the caller. The input field specifies the function request to the
SMAPI BIOS, and the BIOS fills in the return value to the output
field.
by the caller. The input field specifies the function request to the
SMAPI BIOS, and the BIOS fills in the return value to the output
field.
Input Field
Field
Offset
Length
Major Function Number
00h
Byte
Minor Function Number
01h
Byte
Parameter 1
02h
Word
Parameter 2
04h
Word
Parameter 3
06h
Word
Parameter 4
08h
Dword
Parameter 5
0Ch
Dword
Output Field
Field
Offset
Length
Return Code
00h
Byte
Auxiliary Return Code
01h
Byte
Parameter 1
02h
Word
Parameter 2
04h
Word
Parameter 3
06h
Word
Parameter 4
08h
Dword
Parameter 5
0Ch
Dword
A-6
ThinkPad 560/560E SMAPI BIOS