Atari Centipede - Page 63

Centipede
TM
6.
Checking
Vertical
Sync
(Synchronizer)
A.
CAT Box
Settings
for P3 Counter
Test
Probe
Trigger
IC-Pin
Start
1
P3-11
Stop
1
P3-11
Clock
I
P2-2
B.
Signatures
Logic
Probe
Signal
Signature
on
IC-Pin
Name
Should Be
P3-15
—
H7P4
P3-14
IV
3F3U
P3-13
2V
UUCC
P3-12
4V
2A42
C.
CAT
Box Settings
for N3
Counter
Test
D.
Signatures
Logic Probe Signal
Signature
on IC-Pin
Name Should
Be
N3-14 16V
239
F
N3-13 32V
6U0H
N3-12
64V
U047
P4-9
—
F91U
P4-10
—
5890
P4-11
—
108A
P4-12
—
FUU7
N4-10
VBLANK 9H7H
N4-11 VBLANK
C697
N4-6
VRESET 94FP
N4-2
VSYNC F5U6
N4-3 VSYNC
PP1F
M4-10 VBLANKD 8F15
Probe
Start
Stop
Clock
Trigger
IC-Pin
N3-11
N3-11
P2-2
4