-- IPCompression.doc
000000cc LCC=cc
0nnnnnaa n=00001..11001 1..25 A
0110100n T=0011 0..1 B
011ttttn T=0101..1111 0..1 B
10aa n=0 0 A
11nnnnnntttt T=0001..1111 0..63 A/B
11qqqqqq0000 add q*64 to n for the following code