Game controller ports D-subminiature
the de9 connector used on variety of home consoles , computers.
starting in late 1970s atari 2600 game console used modified de9 connectors (male on system, female on controller) game controller connectors. atari joystick ports had bodies entirely of molded plastic without metal shield, , omitted pair of fastening screws. in years following, various video game consoles , home computers adopted same connector own game ports, though not interoperable. common wiring supported 5 digital connections (for up, down, left, , right movement, , 1 fire button), plus 1 pair of analog 100 kΩ potentiometers or paddles. computers supported additional buttons, , on computers additional devices, such computer mouse, light pen, or graphics tablet supported via game port. unlike basic one-button digital joysticks , basic paddles, such devices not typically interchangeable between different systems.
systems utilizing de9 connector game port included texas instruments ti-99/4a; atari 8-bit , st lines; commodore vic-20, 64, 128, , amiga; amstrad cpc (which employed daisy-chaining when connecting 2 amstrad-specific joysticks); msx, x68000, , fm towns, predominantly used in japan; colecovision; sega platforms (e.g. sg-1000, master system , mega drive/genesis); , 3do interactive multiplayer. zx spectrum lacked built-in joystick connector of kind aftermarket interfaces provided ability connect de9 joysticks. nec s home computers (e.g. pc-88, pc-98) used de9 connectors game controllers, depending on sound card used.
many apple ii computers used de9 connectors joysticks, had female port on computer , male on controller, used analog rather digital sticks, , pin-out unlike used on aforementioned systems. de9 connectors not used game ports on apple macintosh, apple iii, ibm pc systems, or game consoles outside aforementioned examples. sega switched proprietary controller ports saturn , dreamcast.
da15s connectors used pc joystick connectors, each da15 connector supports 2 joysticks each 2 analog axes , 2 buttons. in other words, 1 da15s game adapter connector has 4 analog potentiometer inputs , 4 digital switch inputs. interface strictly input-only, though provide +5 v dc power. joysticks more 2 axes or more 2 buttons use signals designated both joysticks. conversely, y-adapter cables available allow 2 separate joysticks connected single da15 game adapter port; if joystick connected 1 of these y-adapters has more 2 axes or buttons, first 2 of each work.
the ibm da15 pc game connector has been modified add (usually mpu-401 compatible) midi interface, , implemented in game connectors on third-party sound cards, example sound blaster line creative labs. standard straight game adapter connector (introduced ibm) has 3 ground pins , 4 +5 v power pins, , midi adaptation replaces 1 of grounds , 1 of +5 v pins, both on bottom row of pins, midi in , midi out signal pins. (there no midi thru provided.) creative labs introduced adaptation.
the neo geo aes game console used da15 connector, pins wired differently , therefore not compatible regular da15 pc game controllers.
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