NES expansion port pinout: Difference between revisions
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==Pinout of 48-pin NES expansion port== | ==Pinout of 48-pin NES expansion port== | ||
+-------\ | +-------\ | ||
+5V |01 48| +5V | +5V |01 48| +5V | ||
| Line 27: | Line 26: | ||
4.00MHz CIC CLK |24 25| CPU D7 | 4.00MHz CIC CLK |24 25| CPU D7 | ||
+-------/ | +-------/ | ||
[[Category:Pinouts]] | [[Category:Pinouts]] | ||
Revision as of 02:18, 31 January 2013
Pinout of 48-pin NES 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
+-------/
