Дополнительное Руководство для IBM 560z
Header Image
Systems that support SMAPI BIOS must provide the following header
image in the F000 segment system ROM area at the 16-byte
boundary. The client needs to search and find this SMAPI BIOS
header image to get the entry point for the service.
image in the F000 segment system ROM area at the 16-byte
boundary. The client needs to search and find this SMAPI BIOS
header image to get the entry point for the service.
Field
Offset
Length
Value
Signature
X
'
00
'
4 bytes
'
$SMB
'
(ASCII)
Version (Major)
X
'
04
'
Byte
X
'
01
'
Version (Minor)
X
'
05
'
Byte
X
'
00
'
Length
X
'
06
'
Byte
X
'
20
'
Checksum
X
'
07
'
Byte
–
Information Word
X
'
08
'
Word
–
Reserved 1
X
'
0A
'
Word
–
Real mode 16-bit offset to
entry point
entry point
X
'
0C
'
Word
–
Real mode 16-bit code
segment address
segment address
X
'
0E
'
Word
–
Reserved 2
X
'
10
'
Word
–
16-bit protected mode offset to
entry point
entry point
X
'
12
'
Word
–
16-bit protected mode code
segment base address
segment base address
X
'
14
'
Doubleword
–
32-bit protected mode offset to
entry point
entry point
X
'
18
'
Doubleword
–
32-bit protected mode code
segment base address
segment base address
X
'
1C
'
Doubleword
–
Signature
ASCII Code
'
$SMB
'
is stored at the top of the header
image.
Version (Major/Minor)
Indicates the SMAPI BIOS version.
Length
The length of the header image.
Checksum
Checksum byte area. The client verifies that this
header image is valid by using this checksum; the client
should check all header image bytes, and the result will
be zero bytes.
header image is valid by using this checksum; the client
should check all header image bytes, and the result will
be zero bytes.
A-4
ThinkPad 560Z SMAPI BIOS