626
How old are you?
(reddthat.com)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 19 Dec 2023
626 points (100.0% liked)
Memes @ Reddthat
1069 readers
1 users here now
The Memes community. Where Memes matter the most.
We abide by Reddthat's Instance Rules & the Lemmy Code of Conduct. By interacting here you agree to these terms.
Rules
- No NSFW content
- No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia. Code of Conduct.
- Be respectful, especially when disagreeing. Everyone should feel welcome here.
- No porn.
- No Ads / Spamming.
founded 2 years ago
MODERATORS
Wasn't the C64 joystick port serial? Or has 40 years muddled it?
They're both DE-9 connectors, but the C64 joystick port is not serial. Each direction on the stick and the fire button are connected to one of the pins on the connector, and a when direction (or the fire button) is pressed that pin has a voltage applied. So effectively it's a parallel connection.
In a serial connection one of the pins is "send" pin and another is "receive". The device then sends data as a bitstream over those two pins.
No, the C64 (and other computers of the time) used a DSUB9 for the joystick connector. Top row 1-5: Up, Down, Left, Right, PaddleB; bottom row 6-9: Fire, +5V, GND, PaddleA. This was the common layout across all systems back then. The DSUB15 analog joystick port was later. And no, it was no serial port, just raw IO pins.