Short:        Example of using CIA interrupts in Blitz
Author:       anton@ww.co.nz (Anton Reinauer)
Uploader:     anton ww co nz (Anton Reinauer)
Type:         dev/blitz
Version:      1.0
Requires:     Blitz Basic2
Architecture: m68k-amigaos

  The Amiga has two CIA (complex interface adaptor) chips- CIA-A, and CIA-B.
This code can access either of the 2 general purpose Timers on these chips.
These timers can execute a section of code a set number of times a second
(you can change how many times a second they fire), independant of your
main code. This code is based on the CIA_Interval.c code on the developer
CD. You can set up a variable from your main program to be updated by the
Timer, or maybe set the interrupt to signal your main task after a set
period of time.

  The CIA resource is a system legal way of allocating the timers, so your
program can check if a timer is being used by another task, if it isn't
then it can allocate it for itself.