trying to understand i8259

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digo_rp
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trying to understand i8259

Post by digo_rp »

why do I need to send EOI to 8259 PIC cuz I put it to work in AEOI Mode

?????????

could anyone help me to try to understand the diference between
EOI and AEOI ?
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xsix
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Joined: Tue Oct 24, 2006 10:52 am

Post by xsix »

forget about it, just write mov al, 0x20 out 0x20, al for primary pic and to 0xA0 0x20 if secondary had fired
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