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| ==Pinout of 48-pin NES expansion port==
| | #REDIRECT [[Expansion port]] |
| +-------\
| |
| +5V |01 48| +5V
| |
| Gnd |02 47| Gnd
| |
| Audio in |03 46| NC
| |
| /NMI |04 45| out 2 ($4016 write data, bit 2)
| |
| A15 |05 44| out 1 ($4016 write data, bit 1)
| |
| EXP9 |06 43| out 0 ($4016 write data, bit 0, strobe on sticks)
| |
| EXP8 |07 42| EXP0
| |
| EXP7 |08 41| EXP1
| |
| EXP6 |09 40| EXP2
| |
| EXP5 |10 39| EXP3
| |
| ($4017 read strobe) /OE for joypad 2 |11 38| EXP4
| |
| joypad 1 D1 |12 37| /OE for joypad 1 ($4016 read strobe)
| |
| joypad 1 D3 |13 36| joypad 1 D4 (before inverting buffer)
| |
| /IRQ |14 35| joypad 1 D0 (likewise)
| |
| joypad 2 D2 |15 34| duplicate of pin 37
| |
| joypad 2 D3 |16 33| joypad 1 D2
| |
| duplicate of pin 11 |17 32| CPU D0
| |
| joypad 2 D4 |18 31| CPU D1
| |
| joypad 2 D0 |19 30| CPU D2
| |
| joypad 2 D1 |20 29| CPU D3
| |
| Video out |21 28| CPU D4
| |
| Audio out |22 27| CPU D5
| |
| unregulated power adapter vdd |23 26| CPU D6
| |
| 4.00MHz CIC CLK |24 25| CPU D7
| |
| +-------/
| |
| [[Category:Pinouts]] | |
