W83877TF/W83877TG
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13. TIMING WAVEFORMS
13.1 FDC
Processor Read Operation
WD
Write Date
AEN
SA0-SA9
CS
TWDD
TAR
TDH
TDF
TRA
Index
TIDX
TIDX
INDEX
TAW
TWD
TWA
Processor Write Operation
Terminal Count
Reset
TTC
TC
TRST
RESET
DMA Operation
IRQ
D0-D7
DACK
IOR
IRQ
D0-D7
AEN
SA0-SA9
DACK
IOW
Drive Seek operation
STEP
DIR
TDST
TSTP
TSTD
TRR
TR
TFD
TSC
TMW (IOW)
TMR (IOR)
TMA
TAM
DRQ
DACK
IOW or
IOR
TMCY
TAA
TMRW
TWW
TWI
TDW