Document Title: [Phoenix.txt (text file)]
Phoenix
Centuri, 1980
There are two boards to the Phoenix boardset, the logic and the CPU board.
OVG-15D (Logic board, 12 EPROMs)
OVG-15U (CPU board, 8085 CPU, 8 pin DIP switch, 36 pin edge connector)
The game is powered using these supply outputs:
+5V DC @ 11 amps
-5V DC @ 1 amp
+12V DC @ 2 amps
None of the diagrams nor the manual mention the current requirements of the
game (that is, the amps required for each voltage output). But my game is
powered by a Peter Chou power supply and the above currents were read directly
off the power supply.
Legend:
CP = Control Panel (12 pin Molex connector, 4 rows of 3)
CH = Coin Harness (24 pin Amp connector, 4 rows of 6, only 8 are used)
CPU = CPU Board (36 pin edge connector)
MV = Monitor Video (6 pin Molex connector, 2 rows of 3)
PS = Power Supply
According to CPU Harness Interconnect Diagram (364-10-1000):
CPU Edge Connector:
SOLDER SIDE | PARTS SIDE
------------------------------------|--------------------------------------
[to PS] Gnd | A | 1 | Gnd [to PS]
--------------------------------|---|---|----------------------------------
[from CP1] Gnd | B | 2 | Gnd [to PS]
--------------------------------|---|---|----------------------------------
[to MV1] COM | C | 3 | Gnd [to PS]
--------------------------------|---|---|----------------------------------
Speaker | D | 4 | Speaker
--------------------------------|---|---|----------------------------------
[to PS] +12V | E | 5 | +12V [to PS]
--------------------------------|---|---|----------------------------------
(Notch cut here) | F | 6 | (Notch cut here)
--------------------------------|---|---|----------------------------------
| H | 7 |
--------------------------------|---|---|----------------------------------
| J | 8 | +5V [from CH14, to CPU9 & CPUK]
--------------------------------|---|---|----------------------------------
[to PS and from CPU8] +5V | K | 9 | +5V [to PS and from CPU8]
--------------------------------|---|---|----------------------------------
| L | 10|
--------------------------------|---|---|----------------------------------
P1 Shield [from CP7] | M | 11| P2 Shield [from CP7]
--------------------------------|---|---|----------------------------------
2 Player Start [from CP3] | N | 12| R Coin [from CH2 and from CPU13]
--------------------------------|---|---|----------------------------------
1 Player Start [from CP2] | P | 13| Count [from CH13 and to CPU12]
--------------------------------|---|---|----------------------------------
P1 Right [from CP4] | R | 14| P1 Fire [from CP6]
--------------------------------|---|---|----------------------------------
P1 Left [from CP5] | S | 15| Red [to MV2]
--------------------------------|---|---|----------------------------------
Blue [to MV4] | T | 16| P2 Right [from CP4]
--------------------------------|---|---|----------------------------------
Green [to MV3] | U | 17| P2 Left [from CP5]
--------------------------------|---|---|----------------------------------
? Sync [to MV5] | V | 18| P2 Fire [from CP6]
---------------------------------------------------------------------------
Notes:
? I don't know whether the sync is + or -. My game is connected to an
Electrohome G07 monitor. Sync goes to pin 5 on the monitor's MTA
connector, and there is another short wire going from pin 5 to pin 6.
A person I was conversing with said there was a handwritten negative
sign next to the sync on his schematic, so it may be negative.
Control Panel: (12-pin molex receptacle)
Pin | Definition
------------------
1 | Gnd [to CPUB and from CH6]
2 | 1P Start [to CPUP]
3 | 2P Start [to CPUN]
4 | Right [to CPU16 and CPUR]
5 | Left [to CPU17 and CPUS]
6 | Fire [to CPU18 and CPU14]
7 | Shield [to CPU11 and CPUM]
8 | Unused
9 | Unused
10 | Unused
11 | Unused
12 | Chassis [to PS and from CH24]
Control Panel diagram:
1 | Gnd -------------|
---|---------- |
2 | 1 Player ----o/ o----|
---|---------- |
3 | 2 Player ----o/ o----|
---|---------- |
4 | Right ----o/ o----|
---|---------- |
5 | Left ----o/ o----|
---|---------- |
6 | Fire ----o/ o----|
---|---------- |
7 | Shield ----o/ o----|
---|---------- |
8 | |
---|---------- |
9 | |
---|---------- |
10| |
---|---------- |
11| |
---|---------- |
12| Chassis -------------------=O GND
Notes:
a) CHASSIS shares a ground with the coin door (pin 24) and the speaker.
b) all these connections are hooked up in parallel
c) in the diagram --o/ o-- is supposed to represent a switch, =O
represents one of those circular connectors that usually is connected to
true ground.
Coin Door: (24-pin amp connector)
Pin | Definition
------------------
1 | Unused
2 | L Coin [to CH3]
3 | R Coin [to CPU12 and from CH2]
4 | Unused
5 | Unused
6 | Gnd [to CP1]
7 | Unused
8 | Unused
9 | Unused
10 | Unused
11 | Unused
12 | Unused
13 | Count [to CPU13]
14 | +5V [to CPU8]
15 | Unused
16 | Unused
17 | Unused
18 | Unused
19 | -5V [to PS]
20 | Gnd [to PS]
21 | Unused
22 | Unused
23 | Unused
24 | Chassis [to CP12]
Coin door diagram:
1 | -------------|
---|---------- |
2 | L COIN ----o/ o----|
---|---------- |
3 | R COIN ----o/ o----|
---|---------- |
4 | |
---|---------- |
5 | |
---|---------- |
6 | Gnd -------------|
---|----------
7 |
---|----------
8 |
---|----------
9 |
---|----------
10|
---|----------
11|
---|----------
12|
---|----------
13| Count -------------|
---|---------- RD | the rectifier diode points from 13 to 14
14| +5V -------------|
---|----------
15|
---|----------
16|
---|----------
17|
---|----------
18|
---|----------
19| -5V -------------|
---|---------- |CC |O this is symbol with circle within circle
20| 0V -------------|
---|----------
21|
---|----------
22|
---|----------
23|
---|----------
24| Chassis ----- Gnd
Notes:
a) there is a rectifier diode (I think) between the COUNT and +5V
b) there is something that looks like a circle with a smaller circle
inside and to the left between the 0V and -5V. Also, the letter O
on the right side of the diagram between pins 19 and 20 is a circle.
--Dave Holcomb
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