Input devices: Difference between revisions
From NESdev Wiki
Jump to navigationJump to search
m (→Hardware: ... wait, why did we have [ [ link_with_underscores | link with spaces ] ] ??) |
m (The famicom expansion port should really be in the wiki, too.) |
||
| Line 5: | Line 5: | ||
The NES has two [[NES_controller_port_pinout|general-purpose controller ports]] on the front of the console, as well as a (rarely used) [[NES_expansion_port_pinout|48-pin expansion port]] underneath. | The NES has two [[NES_controller_port_pinout|general-purpose controller ports]] on the front of the console, as well as a (rarely used) [[NES_expansion_port_pinout|48-pin expansion port]] underneath. | ||
The Famicom's standard controllers are hardwired to the front of the unit, and a special 15-pin expansion port is commonly used for third-party controllers. The AV Famicom, however, features detachable controllers using the same ports as the NES. | The Famicom's standard controllers are hardwired to the front of the unit, and a special [[Famicom expansion port pinout|15-pin expansion port]] is commonly used for third-party controllers. The AV Famicom, however, features detachable controllers using the same ports as the NES. | ||
Revision as of 21:27, 19 April 2012
The NES and Famicom have a set of I/O ports used for controllers and other peripherals, consisting of the following:
- One output port, 3 bits wide, accessible by writing the bottom 3 bits of $4016.
- Two input ports, each 5 bits wide, accessible by reading the bottom 5 bits of $4016 and $4017.
The NES has two general-purpose controller ports on the front of the console, as well as a (rarely used) 48-pin expansion port underneath.
The Famicom's standard controllers are hardwired to the front of the unit, and a special 15-pin expansion port is commonly used for third-party controllers. The AV Famicom, however, features detachable controllers using the same ports as the NES.
