[comp.sys.amiga.hardware] Trackball conversion

technews@iitmax.iit.edu (K. Kadow) (04/24/91)

Is it easy to do this sort of conversion?

Wiring it to handle the mouse buttons would be simple, but how could i convert
a trackball so the A500 could handle it? software driver?

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kadokev@iitvax.bitnet                            technews@iitmax.edu
                        My employer disagrees.                      

C465353@UMCVMB.missouri.edu (Jim Struglia) (04/24/91)

In Message-ID: <1991Apr24.004552.8583@iitmax.iit.edu>
          technews@iitmax.iit.edu (K. Kadow) said:
>Is it easy to do this sort of conversion?
>
>Wiring it to handle the mouse buttons would be simple, but how could i convert
>a trackball so the A500 could handle it? software driver?

It can be very simple to convert a trackball to work on an amiga.  No software
drivers are needed, usually the hardware is modified so that the trackball's
output emulates a mouse's output.  There are (were?) several trackball hacks
available by FTP on ab20.larc.nasa.gov.  Some require adding a few chips, while
others just need to have a new cable soldered in.
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