Z86017/Z16017 PCMCIA Interface Solution
Product Specification
47
Table 21. ATA Register Selection Designations
Register 4
Bit 3
Register 4
Bit 2
Register 4
Bit 1
Register 4
Bit 0
Register 3 Address
Bit 6 Range
SEL_SECO SEL_SECO SEL_PRIMA SEL_PRIMA EN_IO_M Respons
ND_3x
ND_1x
RY_3x
RY_1x
ODE
e
Note
X
0
0
X
0
0
X
0
0
X
0
1
0
1
1
XX
XX
Disabled
Disabled
1F0-1F7 Primary
HDD
0
0
1
0
1
1
1
0
0
1
0
0
1
1
1
1F0-1F7, Primary
3F6, 3F7 HDD
170-177 Secondary
HDD
170- 177, Two drive
376, 377 system on
local
1
1
1
1
170- 177, AT bus
376, 377, side
1F0-1F7
3F6, 3F7
Table 22. Reset Conditions
Register 4
Bit 5
Register 7
Bit 0
EN_DIS_RST PC_HRESET ATA_MODE ATA_HRESET Notes:
1
X
X
1
PCMCIA Mode, Reset
Disabled
0
0
0
1
0
0
1
0
PCMCIA Mode, No Reset
PCMCIA Mode, Asserted
Reset
0
0
1
0
1
1
1
0
ATA Mode, No Reset.
ATA Mode, Asserted Reset.
Programming Internal Registers
PS012002-1201
ZILOG [ ZILOG, INC. ]
