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8259 PIC: Difference between revisions
Added section on disabling
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''Note the presence of io_wait() calls, on older machines its necessary to give the PIC some time to react to commands as they might not be processed quickly''
== Disabling ==
If you are going to use the processor local APIC and the IOAPIC, you must first disable the PIC. This is done via:
<source lang=asm>mov al, 0xff
out 0xa1, al
out 0x21, al
</source>
== See Also ==
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