
I-8
INDEX
F
FCYCWAIT0 bit
DRAM first cycle wait state select logic (table),
4-25
function,
4-25
FCYCWAIT1 bit
DRAM first cycle wait state select logic (table),
4-25
function,
4-25
FD bit
Activity Status 2 Register (Index A1h),
4-53
bit descriptions,
4-41
FDSMI bit,
4-14
FDT0 bit,
4-17
FDT1 bit,
4-17
FDT2 bit,
4-17
FDT3 bit,
4-17
FDWS0 bit
floppy disk drive wait states (table),
4-22
function,
4-22
FDWS1 bit
floppy disk drive wait states (table),
4-22
function,
4-22
FE bit,
3-14
floppy disk drive management. See disk drive manage-
ment registers.
FO0 bit,
4-59
FO1 bit,
4-59
FO2 bit,
4-42
FO3 bit,
4-58
FO4 bit,
4-58
FRDOSWS0 bit
function,
4-67
ROM DOS enable and wait-state select logic (table),
4-67
FRDOSWS1 bit
function,
4-67
ROM DOS enable and wait-state select logic (table),
4-67
FSTROMWS0 bit,
4-65
FSTROMWS1 bit,
4-65
Function Enable 1 Register (Index B0h)
bit descriptions,
4-61
–
4-62
EXTSMI pin management,
1-31
latch and buffer logic (table),
4-62
powered-down device SMIs,
1-31
Function Enable 2 Register (Index B1h)
bit descriptions,
4-62
DRAM memory configuration,
2-3
high-speed PLL frequency select (table),
4-63
RAM mode decode logic (table),
4-63
Function Enable 3 Register (Index B4h)
4-66
G
GATEA20 bit,
4-34
General-Purpose I/O 1 Register (Index 9Ch),
4-51
General-Purpose I/O 2 Register (Index 94h)
bit descriptions,
4-49
determining state of PGP pins in Off mode,
1-7
General-Purpose I/O 3 Register (Index 95h)
bit descriptions,
4-49
determining state of PGP pins in Off mode,
1-7
General-Purpose I/O Control Register (Index 91h)
bit descriptions,
4-47
–
4-48
determining state of PGP pins in Off mode,
1-7
General-Purpose I/O Register (Index 89h),
4-46
general-purpose pins. SeePGP pins, controlling.
GENSMI bit,
4-57
H
hard disk drive management. See disk drive manage-
ment registers.
HD bit
Activity Status 2 Register (Index A1h),
4-53
bit descriptions,
4-41
HDSMI bit,
4-14
HDT0 bit,
4-17
HDT1 bit,
4-17
HDT2 bit,
4-17
HDT3 bit,
4-17
HDTOLTCH bit,
4-12
HDWS0 bit