2006.03.12 [megacz] Swapped {L1,L0}->W, FB->{L0,L1}, {H0->L0,H1->L1}
2006.03.13 [megacz] Fixed lowest bit of z=00000000; it should be "1"
2006.03.13 [megacz] Corrected meaning of z-octet bits 2-4 in IOBs
+ 2006.03.13 [megacz] Added constant zeroes in IOB section
Background
+--------+--------+--------+------+-------+-------+--------+--------+--------+
|Z octet | D octet |
+--------+--------+--------+------+-------+-------+--------+--------+--------+
- |011_0_00| Schmit | Slew |~G2->CR| | Pull | |
+ |011_0_00| Schmit | Slew |~G2->CR| 0 | Pull | 0 |
+--------+--------+--------+------+-------+-------+--------+--------+--------+
- |011_0_01|REG->OUT| | OE | Output Mux |
+ |011_0_01|REG->OUT| 0 | OE | Output Mux |
+--------+--------+--------+------+-------+-------+--------+--------+--------+
|011_0010| Added Delay (primary) |PRI->S-| PRI->G+| PRI->G | PRI->S |
+--------+--------+--------+------+-------+-------+--------+--------+--------+