Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentesRévision précédenteProchaine révision | Révision précédenteProchaine révisionLes deux révisions suivantes | ||
back2root:ibm-pc-ms-dos:hardware:8259 [2022/12/29 02:56] – [Tableau] frater | back2root:ibm-pc-ms-dos:hardware:8259 [2022/12/29 02:57] – [8259 Programmable Interrupt Controller Notes] frater | ||
---|---|---|---|
Ligne 100: | Ligne 100: | ||
==== Other Registers ==== | ==== Other Registers ==== | ||
- | IRR - Interrupt Request Register, maintains a bit vector indicating which IRQ hardware events are awaiting service. Highest level interrupt is reset when the CPU acknowledges interrupt. | + | * IRR - Interrupt Request Register, maintains a bit vector indicating which IRQ hardware events are awaiting service. Highest level interrupt is reset when the CPU acknowledges interrupt. |
- | ISR - In Service Register, tracks IRQ line currently being serviced. | + | |
- | <tab>Updated by EOI command. | + | |
===== Hardware Interrupt Sequence of Events: ====== | ===== Hardware Interrupt Sequence of Events: ====== | ||
Ligne 136: | Ligne 135: | ||
- for a more in-depth discussion of the 8259, see Intel' | - for a more in-depth discussion of the 8259, see Intel' | ||
- | | + | <WRAP rounded box> |
+ | see [[back2root: | ||
+ | </ |