Jed, 
	I am trying to locate a copy of spec you worked from but I can 
not find it in my files.  I am trying to map the original functional 
requirements to pieces of TIGA.  Would you please send me a copy of it.  
(I hope you still have one.)
					Thanks,
					Morgan

Morgan,

	The original functional requirements were:

   1. Be cheap;

   2. Be able to put up a cursor and some characters in a 640 x 480 format with
      two bits/pixel;

   3. Be cheap;

   4. Accept external sync from the video board;

   5. Be cheap;


The minimum number of VRAMs in a system is four, so four is what was used.

This produces a single buffer with 8K Bytes (contiguous) VRAM available for 
34010 program.

There is 45K Bytes also available but it is non-contiguous consisting of 
96 Bytes every 256 Bytes (until the contiguous part is reached).

Using the 45K Bytes for program would mean not being able to use the fast
screen clear mode. Fast screen clear would be able to clear (or set) the screen
in less than 100 us.


     Jed	

Thanks,
				Be cheap,
				Morgan