Name:		zippy11.shk
 Author:	Andy McFadden
 Written:	December 1991
 Summary:	P8 ZipGS control program
 Description:

 The ZipGS was a popular accelerator card for the Apple IIgs.  With an
 8MHz card, you could get an overall improvement of about 2x.  If you
 wanted to deactivate the acceleration or twiddle features like the
 joystick delay, you had to be boot into GS/OS to run their application.
 I didn't like that much, so I threw this together.

 One of the cool things about it is the user interface, which changes
 the text and background color registers when the scan line reaches
 certain points.  This gives you more than one text color on the text
 screen simultaneously.  It flashes badly if you have quarter-second
 AppleTalk interrupts enabled, but then nothing's perfect. :-)

 Source code is included.  This program is in the public domain.