S5935TFC AMCC [Applied Micro Circuits Corporation], S5935TFC Datasheet - Page 97

• Manufacturer Part Number: S5935TFC
• Description: PCI Product
• Manufacturer: AMCC [Applied Micro Circuits Corporation]

S5935 – PCI Product
EXPANSION BIOS ROMS
This section provides an example of a typical PC-com-
patible expansion BIOS ROM. Address offsets 0040h
through 007Fh represent the portion of the external nv
memory used to boot-load the S5935 controller.
Whether the expansion ROM is intended to be execut-
Table 39. PC Compatible Expansion ROM
AMCC Confidential and Proprietary
Byte Offset
0h
1h
2h
3h
7h-17h
18h-19h
20h-3Fh
The following represents the boot-load image for the S5935 controller’s PCI configuration register:
40h
42h
44h
45h
46h
48h
49h
4Ch
4Dh
4Eh
4Fh
50h
51h
52h
53h
54h
58h
5Ch
60h
64h
Byte Length
1
1
1
4
17h
2
32h
2
2
1
1
2
1
3
1
1
1
1
1
1
1
1
4
4
4
4
4
55h
AAh
var.
var.
var.
var.
var
[your vendor ID]
[your device ID]
not used
[Bus Master Config.]
not used
[your revision ID]
[your class code]
not used
[your latency timer #]
[your header type]
[self-test if desired]
C0h, C1h or C2h
FFh
E8h
10h
[base addr. #1]
[base addr. #2]
[base addr. #3]
[base addr. #4]
[base addr. #5]
Binary Value
BIOS ROM signature byte 1
BIOS ROM signature byte 2
Length in multiples of 512 bytes
Entry point for INIT function.
Reserved (application unique data)
Pointer to PCI Data Structure (see Table 3)
user-defined
able code is determined by the contents of the first
three locations (starting at offset 0h) and a byte check-
sum over the defined length. The defined length is
specified in the byte at address offset 0002h. Table 2
lists each field location by its address offset, its length,
its value, and description.
Description
Revision 1.02 – June 27, 2006
Data Book
55h
AAh
01h
10e8h
4750h
00h
80h
FF0000h
00h
00h
80h or 00h
C0h, C1h or
C2h
FFh
E8h
10h
xxxxxxxxh
xxxxxxxxh
xxxxxxxxh
xxxxxxxxh
xxxxxxxxh
DS1527
Example
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