mirror of
https://github.com/originalmk/mkos32.git
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54 lines
1.0 KiB
C
54 lines
1.0 KiB
C
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#include <stddef.h>
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#include <stdint.h>
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#include "gdt.h"
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#include "print.h"
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#include "idt.h"
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#include "utils.h"
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void kernel_main(void)
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{
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terminal_initialize();
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print_texts();
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gdt_setup();
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idt_setup();
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// 8 of master PIC interrupt numbers
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// and 8 of slave PIC interrupt numbers
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// right after 0-31 interrupt numbers reserved for processor
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PIC_remap(0x20, 0x28);
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// Set RTC freq
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uint8_t rate = 15;
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rate &= 0x0F;
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set_interrupts(false);
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outb(0x70, 0x8A);
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char prev = inb(0x71);
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outb(0x70, 0x8A);
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outb(0x71, (prev & 0xF0) | rate);
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set_interrupts(true);
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// Set up RTC periodic interrupts
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set_interrupts(false);
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outb(0x70, 0x8B);
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prev = inb(0x71);
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outb(0x70, 0x8B);
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outb(0x71, prev | 0x44);
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set_interrupts(true);
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// Change to binary date format ^^
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// Clear IRQ 8 mask
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//outb(0xA1, inb(0xA1) & ~(1 << 0));
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outb(0xA1, ~(1 << 0));
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outb(0x21, ~(1 << 2));
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outb(0x70, 0x0C);
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unsigned short v = inb(0x71);
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terminal_newline();
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display_date();
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__asm__("int $21");
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__asm__("int $10");
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__asm__("int $9");
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}
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