Merge pull request #42 from voidderef/ds-fusion-wiring

Add E33 (DS fusion) wiring/pinouts for main PCB connections
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# Dancing Stage Fusion dedicated cabinet JAMMA edge wiring
The Dancing Stage Fusion dedicated cabinet has different wiring than
classic Dancing Stage/Dance Dance Revoluion Machines that are either based
on 573 analog/digital hardware or Python 2 hardware.
The cabinet connects to the main PCB using two JAMMA edge 28-pin connectors.
The following sub-sections provide full pinouts taken from a stock
Dancing Stage Fusion dedicated cabinet. `NC` denotes to "not connected".
## Pinout primary 28-pin connector
This 28-pin connector is actually following the JAMMA specification.
### Top side pinout
```text
1: NC
2: GND
3: +5V
4: +5V
5: NC
6: +12V
7: NC
8: NC
9: NC
10: NC
11: NC
12: Video red
13: Video blue
14: Video GND
15: Test switch
16: Coin switch
17: P1 start
18: P1 up
19: P1 down
20: P1 left
21: P1 right
22: NC
23: P1 left select
24: P1 right select
25: NC
26: NC
27: NC
28: GND
```
### Bottom side pinout
```text
1: GND
2: GND
3: NC
4: NC
5: NC
6: +12V
7: NC
8: NC
9: NC
10: NC
11: NC
12: Video green
13: Video sync
14: Service switch
15: NC
16: NC
17: P2 start
18: P2 up
19: P2 down
20: P2 left
21: P2 right
22: NC
23: P2 select left
24: P2 select right
25: NC
26: NC
27: GND
28: GND
```
## Pinout secondary 28-pin connector
This 28-pin connector is the same as the primary connector but does not
follow the JAMMA pinout specification.
The follow hardware is connected on this connector:
* +5V power source
* Serial cable to EXT I/O
* Lights I/O cable to AMP box
### Top side pinout
```text
1: NC
2: NC
3: +5V (red)
4: NC
5: Jumper cable (brown) -> Connects to bottom pin 6
6: NC
7: EXT I/O serial (purple)
8: NC
9: NC
10: NC
11: NC
12: NC
13: NC
14: NC
15: NC
16: NC
17: NC
18: NC
19: NC
20: NC
21: NC
22: NC
23: NC
24: Lights I/O (yellow-grey)
25: Lights I/O (light blue)
26: Lights I/O (grey)
27: GND (black)
28: NC
```
### Bottom side pinout
```text
1: NC
2: NC
3: NC
4: NC
5: NC
6: Jumper cable (brown) -> Connects to top pin 5
7: EXT I/O serial (grey)
8: EXT I/O serial (black)
9: NC
10: NC
11: NC
12: NC
13: NC
14: NC
15: NC
16: NC
17: NC
18: NC
19: NC
20: NC
21: NC
22: NC
23: Lights I/O (purple-grey)
24: Lights I/O (green)
25: Lights I/O (purple)
26: Lights I/O (black)
27: NC
28: NC
```
## Lights I/O connector
Lights I/O connector that goes into the AMP box.
Pintout order: looking at the front of the connector, left to right:
```text
| |--| |
|-----------------|
|1 2 3 4 5 6 7 8 9|
|-----------------|
1: Earth (yellow-green)
2: ??? (grey)
3: ??? (purple)
4: ??? (light blue)
5: ??? (green)
6: ??? (yellow-grey)
7: ??? (purple-grey)
8: NC
9: ??? (black)
```
## EXT I/O serial connector
Serial connector going to the EXT I/O board.
Pintout order: looking at the front of the connector, left to right:
```text
| |
|-----|
|1 2 3|
|-----|
1: GND (black)
2: ??? (purple)
3: ??? (grey)
```