Configuration
EBC2
Page 4 - 10
© 2005 Kontron Modular Computers GmbH
ID 29022, Rev. 01
26873
.02.VC.050120/135455
P R E L I M I N A R Y
4.5.3
POST Code Data Register
The POST code data register is used to control the seven segment LED displays and to indi-
cate the status of the respective display in the case of a read access.
Address Offset:
0x0000 0080
Format:
Byte
Access:
Read and write
Value after reset:
0x5F (indicates that the boot process has been completed)
LED D20 indicates the value of the higher nibble of the register, whereas, LED D21 indicates
the value of the lower nibble of the register.
Table 4-6: POST Code Data Register
REGISTER NAME
POST Code Data Register
ACCESS
ADDRESS
0x0000 0080 (offset)
R
W
BIT POSITION
MSB
7
6
5
4
3
2
1
0
LS
B
CONTENT
POST_
CODE_
DATA_7
POST_
CODE_
DATA_6
POST_
CODE_
DATA_5
POST_
CODE_
DATA_4
POST_
CODE_
DATA_3
POST_
CODE_
DATA_2
POST_
CODE_
DATA_1
POST_
CODE_
DATA_0
DEFAULT
0
0
0
0
0
0
0
0
0
POST_
CODE_
DATA_0
0
Register lower nibble: display indicates in hexadecimal value:
BITS 3 2 1 0
HEX
DISPLAY: D21
0 0 0 0
0x0
0
•
•
•
1 1 1 1
0xF
F
1
1
POST_
CODE_
DATA_1
0
1
2
POST_
CODE_
DATA_2
0
1
3
POST_
CODE_
DATA_3
0
1
4
POST_
CODE_
DATA_4
0
Register higher nibble: display indicates in hexadecimal value:
BITS 7 6 5 4
HEX
DISPLAY: D20
0 0 0 0
0x0
0
•
•
•
1 1 1 1
0xF
F
1
5
POST_
CODE_
DATA_5
0
1
6
POST_
CODE_
DATA_6
0
1
7
POST_
CODE_
DATA_7
0
1
