Controller port registers
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NES
Addr | 7654.3210 | Function |
---|---|---|
$4016 (W) | ----.---A | Output data (strobe) to both controllers. |
----.-CBA | Output data to the expansion port. | |
$4016 (R) | ---4.3--0 | Read data from controller port #1. |
---4.3210 | Read data from expansion port. | |
$4017 (R) | ---4.3--0 | Read data from controller port #2. |
---4.3210 | Read data from expansion port. |
Famicom
Addr | 7654.3210 | Function |
---|---|---|
$4016 (W) | ----.---A | Output strobe to both controllers. |
----.-CBA | Output data to the expansion port. | |
$4016 (R) | ----.-M-0 | Read data from controller #1 and microphone state from controller #2 |
----.--1- | Read data from expansion port. | |
$4017 (R) | ----.---0 | Read data from controller #2. |
---4.3210 | Read data from expansion port. |