Editing Atari interface (section)

===J-PC===
The ''J-PC'' standard was used by primarily Japanese systems such as ''MSX'' (multiple manufacturers), [[FM Towns]] and the [[Sharp X68000]] and on expansion cards for Japanese PC systems.

The "Out" strobe on pin 8 is used by the host to access special features on certain controllers, such as MSX-compatible mice. Most games will keep pin 8 grounded, which will allow Atari-compatible joysticks to be used.

The gamepad for the ''FM Towns Marty'' had also Run and Select buttons, implemented as Left and Right, and Up and Down respectively.<ref>GameSX—[https://gamesx.com/controldata/fmtownsjoy.htm FM Towns/Marty joystick pinout. Retrieved 2018-06-14</ref>

Mice and trackballs for J-PC machines had logic in them instead of requiring logic in the host, and therefore a different interface.
An Amiga or Atari-compatible mouse must never be connected to a J-PC system, as pressing the right mouse button would short +5V to Ground.

See also:
* [[SpectraVideo SV328]] — a MSX computer with two J-PC ports.