A poorly written OS for the x86 arch. (WIP)
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#include "pic.h"
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#include "io.h"
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void PIC_sendEOI(uint8 irq) {
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if( irq >= 8 )
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outb(PIC2_CMD, PIC_EOI);
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outb(PIC1_CMD, PIC_EOI);
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}
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void PIC_remap(uint offset_1, uint offset_2) {
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uint8 a1, a2;
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a1 = inb(PIC1_DATA);
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a2 = inb(PIC2_DATA);
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// Start the init sequance
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outb_w( PIC1_CMD, ICW_INIT_MASK );
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outb_w(PIC2_CMD, ICW_INIT_MASK );
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outb_w(PIC1_DATA, offset_1); // ICW2 master offset
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outb_w(PIC2_DATA, offset_2); // ICW2 slave offset
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outb_w(PIC1_DATA, 0x4);
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outb_w(PIC2_DATA, 0x2);
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}
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