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Step 4Jumper the 'System Select' wires
Every UPCB cable will have the main power (VCC) going into pin 8, and the main ground (GND) going into pin 1. There will also be a number of pins tied high or low (connected to VCC or GND) to tell the UPCB what system we are communicating with. These pins are the ones called High or Low in the 'How to make a UPCB cable' description in the console's .H file. Let's look at the one for the Button Select USB cable, in USBTEMPLATE.H
Before we start adding the system's cable, it is much easier to go ahead and take care of the system select lines now, without the massive console cable in the way. The only pins that say Low are pins 3-7 and 15. We are going to connect all of these so that they are electricly connected to what will be GND, pin 1. The only pins that say High are 10, 11, and 2. We are going to connect all of these so that they are electricly connected to what will be VCC, pin 8.
To do this, we are going to daisy chain a wire from one pin to the next. Using small (< 1") pieces of 30 guage wire with the ends stripped, this becomes rather easy compared to larger wires. In the picture you will see the first part of this, showing a wire going from pin 8 (VCC) to pin 11, then pin 10, then pin 2. Three small pieces of wire and all of the pins that are High have been connected.
Next, we'll do the Lows. With another short piece of 30 guage wire, connect pin 1 (GND) to pin 3 (low). Follow up with additional wire connecting pin 3 to pin 4, pin 4 to pin 5, pin 5 to pin 6, pin 6 to pin 7, and lastly one more wire connecting pin 7 to pin 15.
Now all of the pins that should be tied High or Low are connected to either GND (pin 1) for low, or VCC (pin 8) for high.
To Make a UPCB cable for Button Select USB D-Sub 15 Pin USB Pin 1 4 (GND) 2 High 3 Low 4 Low 5 Low 6 Low 7 Low 8 1 (VCC) 9 NC - Not connected to anything 10 High 11 High 12 NC - Not connected to anything 13 2 (D-) 14 3 (D+) 15 Low
Before we start adding the system's cable, it is much easier to go ahead and take care of the system select lines now, without the massive console cable in the way. The only pins that say Low are pins 3-7 and 15. We are going to connect all of these so that they are electricly connected to what will be GND, pin 1. The only pins that say High are 10, 11, and 2. We are going to connect all of these so that they are electricly connected to what will be VCC, pin 8.
To do this, we are going to daisy chain a wire from one pin to the next. Using small (< 1") pieces of 30 guage wire with the ends stripped, this becomes rather easy compared to larger wires. In the picture you will see the first part of this, showing a wire going from pin 8 (VCC) to pin 11, then pin 10, then pin 2. Three small pieces of wire and all of the pins that are High have been connected.
Next, we'll do the Lows. With another short piece of 30 guage wire, connect pin 1 (GND) to pin 3 (low). Follow up with additional wire connecting pin 3 to pin 4, pin 4 to pin 5, pin 5 to pin 6, pin 6 to pin 7, and lastly one more wire connecting pin 7 to pin 15.
Now all of the pins that should be tied High or Low are connected to either GND (pin 1) for low, or VCC (pin 8) for high.
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