Xref: utzoo comp.sys.atari.8bit:2180 comp.sys.cbm:1995
Path: utzoo!utgpu!watmath!clyde!att!pacbell!ames!mailrus!csd4.milw.wisc.edu!uwmcsd1!marque!uunet!portal!cup.portal.com!Bob_BobR_Retelle
From: Bob_BobR_Retelle@cup.portal.com
Newsgroups: comp.sys.atari.8bit,comp.sys.cbm
Subject: Re: commodore mouse
Message-ID: <13398@cup.portal.com>
Date: 11 Jan 89 06:27:12 GMT
References: <33889@bbn.COM> <5644@cbmvax.UUCP>
Organization: The Portal System (TM)
Lines: 25

Fred Bowen writes about how the C-64 reads the 1351 Commodore mouse..
 
Fred, if you're still tuned in here, is this A/D process similar to the way
the C-64 reads the Paddle pots..?
 
The 8-bit Atari uses a somewhat similar way of reading the A/D ports through
hardware, although the scaling seems to be a little different.  The Atari
paddles on a C-64 give a slightly different range than the Commodore paddles
do...   also, a much asked question revolves around the differences between
the Atari and Commodore versions of the Koalapad touch tablet...
 
I guess this is mostly out of curiosity, not any immediate application..
 
As far as the proportional mode of the 1351 mouse, does the resultant data
get stored in the same locations as the paddle values..?  If so, it just might
be possible that the mouse could be read on an 8-bit Atari...  
 p t 0
I guess I'm just a little bit confused as to the actual input method from
the mouse... if it's a variable resistance, as in a paddle, does the computer
translate the x-y values into an absolute position, rather than relative
direction and speed values, as an Amiga or Atari ST mouse..?
 
Again, just mostly curiosity, I guess...
 
BobR