Subject: Re: Diaspora, politics, and MI
To: None <>
From: Jukka Marin <>
List: current-users
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



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