initial
Values are [5:0]:    5, 4, 3, 2, 1, 0
Packed values are: 543210
read & writeVreg
Values are [5:0]:    f, e, d, c, b, a
Packed values are: fedcba
read & writeVreg head
Values are [5:0]:    5, 4, 3, 2, 1, 0
Packed values are: 543210
reverseBits: 010101000011001000010000 000010000100110000101010
0000001 msb = 0 parity = 1, rev = 1000000, Ones = 1, MSB zeros = 6, LSB zeros = 0
0000011 msb = 0 parity = 0, rev = 1100000, Ones = 2, MSB zeros = 5, LSB zeros = 0
0000010 msb = 0 parity = 1, rev = 0100000, Ones = 1, MSB zeros = 5, LSB zeros = 1
1000001 msb = 1 parity = 0, rev = 1000001, Ones = 2, MSB zeros = 0, LSB zeros = 0
1000010 msb = 1 parity = 0, rev = 0100001, Ones = 2, MSB zeros = 0, LSB zeros = 1
1000011 msb = 1 parity = 1, rev = 1100001, Ones = 3, MSB zeros = 0, LSB zeros = 0
1000011 msb = 1 parity = 1, rev = 1100001, Ones = 3, MSB zeros = 0, LSB zeros = 0
1010000 msb = 1 parity = 0, rev = 0000101, Ones = 2, MSB zeros = 0, LSB zeros = 4
0000101 msb = 0 parity = 0, rev = 1010000, Ones = 2, MSB zeros = 4, LSB zeros = 0
11111111 msb = 1 parity = 0, rev = 11111111, Ones =  8, MSB zeros =  0, LSB zeros =  0
00000000 msb = 0 parity = 0, rev = 00000000, Ones =  0, MSB zeros =  8, LSB zeros =  8
10101010 msb = 1 parity = 0, rev = 01010101, Ones =  4, MSB zeros =  0, LSB zeros =  1
01010101 msb = 0 parity = 0, rev = 10101010, Ones =  4, MSB zeros =  1, LSB zeros =  0
10000001 msb = 1 parity = 0, rev = 10000001, Ones =  2, MSB zeros =  0, LSB zeros =  0
10000001,  truncateLSB = 100000 
10000001,  truncateLSB = 10000 
10000001,  truncateLSB = 1000 
10000001,  truncateLSB = 100 
10000001,  truncateLSB = 10 
10000001,  truncateLSB = 1 
10000001,  truncateLSB = 0 
0010011,  truncateLSB = 001001 
0010011,  truncateLSB = 00100 
0010011,  truncateLSB = 0010 
0010011,  truncateLSB = 001 
0010011,  truncateLSB = 00 
0010011,  truncateLSB = 0 
0010011,  truncateLSB = 0 
1100100,  truncateLSB = 110010 
1100100,  truncateLSB = 11001 
1100100,  truncateLSB = 1100 
1100100,  truncateLSB = 110 
1100100,  truncateLSB = 11 
1100100,  truncateLSB = 1 
1100100,  truncateLSB = 0 
110001111,  truncateLSB = 110001 
110001111,  truncateLSB = 11000 
110001111,  truncateLSB = 1100 
110001111,  truncateLSB = 110 
110001111,  truncateLSB = 11 
110001111,  truncateLSB = 1 
110001111,  truncateLSB = 0 
10111100,  truncateLSB = 101111 
10111100,  truncateLSB = 10111 
10111100,  truncateLSB = 1011 
10111100,  truncateLSB = 101 
10111100,  truncateLSB = 10 
10111100,  truncateLSB = 1 
10111100,  truncateLSB = 0