I think this should be the final pinout for the 20-pin expansion bus on the Erzielboard.
| Bus Pin | Common Port | Remappable Port |
| 1 | RA0 | RP0 |
| 2 | RA1 | RP1 |
| 3 | RA2 | RP2 |
| 4 | RA3 | RP3 |
| 5 | RA4 | RP4 |
| 6 | RA5 | RP5 |
| 7 | RB3 | RP7 |
| 8 | RB0 | RP8 |
| 9 | RB1 | RP9 |
| 10 | RC2 | RP11 |
| 11 | RB4 | RP12 |
| 12 | RB5 | RP13 |
| 13 | RB2 | RP14 |
| 14 | RC3 | RP15 |
| 15 | RC5 | RP16 |
| 16 | RC4 | RP17 |
| 17 | RC6 | RP18 |
| 18 | RC7 | RP19 |
| 19 | RD0 | RP20 |
| 20 | RD1 | RP21 |
Crypto [Neo]
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