Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentesRévision précédente | |||
back2root:ibm-pc-ms-dos:hardware:8253 [2023/01/14 16:21] – [Read Back Command Status (8254 only, read from counter register)] frater | back2root:ibm-pc-ms-dos:hardware:8253 [2023/01/14 16:26] (Version actuelle) – frater | ||
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Ligne 139: | Ligne 139: | ||
| 10 | select counter 2 | | | 10 | select counter 2 | | ||
| 11 | read back command (8254 only, **illegal on 8253**, see [[# | | 11 | read back command (8254 only, **illegal on 8253**, see [[# | ||
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- | ===== Read Back Command Format | ||
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- | ^ Bit ^ Read Back Command (written to Mode Control Reg) ^ | ||
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- | | 6-7 | 11 = read back command| | ||
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===== Read Back Command Status (8254 only) ====== | ===== Read Back Command Status (8254 only) ====== | ||
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Read from counter register | Read from counter register | ||