[Coco] High res joystick interface
d_lord at sbcglobal.net
Wed Apr 4 08:04:30 EDT 2012
The 0 to 63 is for a mouse/joystick without the Hires interface. The 63 count max is because the CoCo D-A convertor is only 6 bits(0-63). The hires interface works by timing a capacitor's charge time through the X or Y axis potentiometer in the mouse. It is processor intensive compared to the 6 bit successive approximation used by the standard interface.
--- On Tue, 4/3/12, Robert Hermanek <rhermanek at centurytel.net> wrote:
From: Robert Hermanek <rhermanek at centurytel.net>
Subject: [Coco] High res joystick interface
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Date: Tuesday, April 3, 2012, 2:21 PM
It occurs to me I've always wanted to try the hi res joystick interface out with my color mouse, but I've not actually verified that I know what it does. What I've always assumed it does is take a single device (like my mouse) and split the X coord to one joystick port, and Y coord to other joystick port, and then using both the horizontal and vertical inputs of each port, give you 64x64 (4096) discreet positions instead of the normal 0-63 for each axis.
Question #1: Am I right about the above?
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