Hardware manual

Rev. 3.0, 09/98, page 126 of 361
P97
RP9
Reset
Reset
Internal data bus
WP9
WP9D
R
R
Q
Q
D
D
P97 DR
P97DDR
C
C
WP9D:
WP9:
RP9:
Write Port 9 DDR
Write Port 9
Read Port 9
Mode 1 or 2
WAIT input
Figure 6.9 (e) Port 9 Schematic Diagram (Pin P9
7
)