РЕГИСТР ДАННЫХ ПОРТА B - PORTB
| Бит
$18 Чт./зап. (R/W) Начальн.знач. |
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| PORTB7 | PORTB6 | PORTB5 | PORTB4 | PORTB3 | PORTB2 | PORTB1 | PORTB0 | PORTB | |
| R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | ||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Микроконтроллер AT90S2313
| Бит
$18 Чт./зап. (R/W) Начальн.знач. |
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| PORTB7 | PORTB6 | PORTB5 | PORTB4 | PORTB3 | PORTB2 | PORTB1 | PORTB0 | PORTB | |
| R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | ||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |