| Pad | goes to |
| JLEFTHOR | PC0 |
| JLEFTVER | PC1 |
| JRIGHTHOR | PC2 |
| JRIGHTVER | PC3 |
| MUX_CHANA | PC4 |
| MUX_CHANB | PC5 |
| MUX_A1 | PD0 |
| J_RIGHTPRESS | PD1 |
| MUX_A0 | PD2 |
| USB_PLUS | PD3 |
| USB_MIN | PD4 |
| J_LEFTPRESS | PD5 |
| B_BACK | PD6 |
| B_START | PD7 |
| D_DOWN | PB0 |
| M_LEFT | PB1 |
| M_RIGHT | PB2 |
| D_LEFT | PB3 |
| D_RIGHT | PB4 |
| D_UP | PB5 |
Don't forget connecting a 20MHz crystal to the AVR. See its datasheet for info on where to put it.