Subject: Re: Diaspora, politics, and MI
To: None <firstname.lastname@example.org>
From: Jukka Marin <email@example.com>
Date: 09/20/1996 22:03:54
> >Given this is current-users, and not port-i386, you are wrong.
> >Amigas have joystick/mouse ports on the motherboard.
> >And so do Atari STs.
> Are they truly PC-compatible analog joystick ports? i.e. is there a
> single byte-wide memory location which has joystick button status bits
> in the four MSBs and one-shot outputs for the joystick axes in the
> four LSBs?
The Amiga joystick ports have digital inputs and two analog inputs which
have an RC time constant (where R is the potentiometer inside the "joystick")
which generates pulses for an 8-bit counter which must be read and cleared
in software. A bit better than the PC hardware, but still not a real A/D
---> http://www.jmp.fi/~jmarin/ <---