| Post 2 made on Thursday March 16, 2017 at 19:29 |
3FG Select Member |
Joined:
Posts: | August 2009
1,861 |
|
|
The signals are not "inverse"; instead they are bit reversed in order. What you're doing is reversing the order of the nibbles: 0D becomes D0. Instead, write D0 as 1101 0000
Reverse the order one bit at a time:
0000 1011 which is 0B.
For NEC, the bit reversal is done on each byte individually, and the bytes themselves retain the byte order
So 20 DF when bit reversed changes:
0010 0000 1101 1111 (20 DF)
0000 0100 1111 1011 (04 FB)
| |
|
|
