S1R72803F00A
EPSON
87
IDE Command Control Register
This register is a Command Block Register that is the I/O port of the IDE interface.
Address
Register Name
Bit Symbol
R/W
Description
H.Rst S.Rst B.Rst
0x78
IDE_CS10
7:
6:
Control Block Register
5:
4:
R/W
Read : Data Bus Hi – Impedance
0x00
0x00
–
3:
Write: Not Used
2:
1:
0:
0x79
IDE_CS11
7:
6:
Control Block Register
5:
4:
R/W
Read : Data Bus Hi – Impedance
0x00
0x00
–
3:
Write: Not Used
2:
1:
0:
0x7A
IDE_CS12
7:
6:
Control Block Register
5:
4:
R/W
Read : Data Bus Hi – Impedance
0x00
0x00
–
3:
Write: Not Used
2:
1:
0:
0x7B
IDE_CS13
7:
6:
Control Block Register
5:
4:
R/W
Read : Data Bus Hi – Impedance
0x00
0x00
–
3:
Write: Not Used
2:
1:
0:
0x7C
IDE_CS14
7:
6:
Control Block Register
5:
4:
R/W
Read : Data Bus Hi – Impedance
0x00
0x00
–
3:
Write: Not Used
2:
1:
0:
0x7D
IDE_CS15
7:
6:
Control Block Register
5:
4:
R/W
Read : Data Bus Hi – Impedance
0x00
0x00
–
3:
Write: Not Used
2:
1:
0:
0x7E
IDE_CS16
7:
6:
Control Block Register
5:
4:
R/W
Read : Alternate Status
0x00
0x00
–
3:
Write: Device Control
2:
1:
0:
0x7F
IDE_CS17
7:
6:
Control Block Register
5:
4:
R/W
Read : (obsolete)
0x00
0x00
–
3:
Write: Not Used
2:
1:
0: