1. Locate (Bus 0, Device 1F (31), Function 0), and turn to 32-bits, find the RCBA,
Root Complex Base Address Register =0xFED1C000
2. Determine the indexed registers (Index, Data & Status)
IOBPIRI (IOBP Indexed Register Index) = RCBA(base) + 2330h = 0xFED1E330
3 .Modify IOBP Index (Port 0 = E5004100h )
and change the IOBP data from A4 to 94
and change the IOBP Stauts 8–14 bit to 701 to save the data
and change the IOBP Stauts 8–14 bit to 601 to vertify the data is correct
U2ECR — USB 2.0 Electrical Control Register
Index (IOBP Address Offset)
Data
PORT 0: E5004100h
0005A401
PORT 1: E5004200h
0005A401
PORT 2: E5004300h
0005A401
PORT 3: E5004400h
00059301
PORT 4: E5004500h
00059401
PORT 5: E5004600h
0005A401
PORT 6: E5004700h
0005A401
PORT 7: E5004800h
0005A401
PORT 8: E5004900h
00059C01
PORT 9: E5004A00h
00059C01
PORT 10: E5004B00h
00059301
PORT 11: E5004C00h
00059301
PORT 12: E5004D00h
0005A401
PORT 13: E5004E00h
0005A401
SECRT88 — SATA Electrical Control Register T88
Index (IOBP Address Offset)
Data
PORT 0: EA002488h
5580983A
PORT 1: EA002688h
5580983A
PORT 2: EA000888h
5580983A
PORT 3: EA000A88h
5580983A
PORT 4: EA002088h
5580983A
PORT 5: EA002288h
5580983A
