README

	Wow!  About 25 people mailed me about my FlipBitMapX and FlipBitMapY
routines.  Well, I have decided to zoo them up and send them to comp.sys.amiga,
so that anyone who is interested in them will be able to get them.  I will
be sending the zoom routines as soon as I 'port' them to manx assembler. (I
usually use JForth as my primary development language)  Thank you to all who
mailed.  Please let me know if you have any problems with the routines.
	NOTE:  When flipping a bitmap on the Y axis you may find that there
	is a black area on the lefthand side of the bitmap, and that the
	righthand side of the bitmap has disappeared.  This is because your
	bitmap has been 'rounded' up by allocraster().  i.e. let's say you
	have a 641x200 screen open.  Your bitmap will really be 656x200 wide,
	and when you flip it, you will 'lose' part of the bitmap.  This does
	not mean that part of the bitmap is gone, it means that part of the
	bitmap is not visible on the screen (viewport).  If you were to flip
	it back, then you would see the bitmap back like it was before you
	started.  How to get around this problem:  Either make the screen
	the same word bounded size as allocraster() will give, or do the flip
	in a separate bitmap, and then do a blit back to the viewing screen,
	accounting for the bitmap 'shift'

kirkb@cod.nosc.mil