NES Expansion port

Available at Nintendo NES.

Pinout

          _______
         |*      \
 VCC  >01]        [48<  VCC
 VEE  >02]        [47<  VEE
 AIN  >03]        [46]  --
/NMI  [04]        [45>  C.2
CA15  <05]        [44>  C.1
(51)  [06]        [43>  C.0
(52)  [07]        [42]  (16)
(53)  [08]        [41]  (17)
(54)  [09]        [40]  (18)
(55)  [10]        [39]  (19)
/C2R  <11]        [38]  (20)
C1.1  >12]  EXP.  [37>  /C1R
C1.3  >13]  PORT  [36>  C1.4
/IRQ  [14]        [35>  C1.0
C2.2  >15]        [34>  /C1R
C2.3  >16]        [33>  C1.2
/C2R  <17]        [32]  D0
C2.4  >18]        [31]  D1
C2.0  >19]        [30]  D2
C2.1  >20]        [29]  D3
VOUT  <21]        [28]  D4
AOUT  <22]        [27]  D5
 VDD  <23]        [26]  D6
4MHZ  <24]        [25]  D7
         |_______/

Contributions

• Joakim Ögren

Sources

• NES hardware development guide (April 23rd, 2004) by Brad Taylor