ø
A
19
AS
RD (read)
D
(read)
WR (write)
D
(write)
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T
1
to A
0
to D
7
0
t
AS2
t
WDS2
to D
7
0
Figure 17-5 Basic Bus Cycle: Three-State Access
T
T
2
3
t
ACC4
t
ACC4
t
t
RDS
ACC2
t
t
WSD
WSW2
440
