diff options
Diffstat (limited to 'kernel/src/cpu/pic.c')
| -rw-r--r-- | kernel/src/cpu/pic.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/kernel/src/cpu/pic.c b/kernel/src/cpu/pic.c index ceb6e11..83bb524 100644 --- a/kernel/src/cpu/pic.c +++ b/kernel/src/cpu/pic.c @@ -3,22 +3,18 @@ void remap_pic(void) { - // save masks -// uint8_t a1 = inb(PIC1_DATA); -// uint8_t a2 = inb(PIC2_DATA); - // starts the initialization sequence (in cascade mode) outb(PIC1_COMMAND, ICW1_INIT | ICW1_ICW4); outb(PIC2_COMMAND, ICW1_INIT | ICW1_ICW4); - outb(PIC1_DATA, 0x20); // ICW2: Master PIC vector offset - outb(PIC2_DATA, 0x28); // ICW2: Slave PIC vector offset + outb(PIC1_DATA, 0xe0); // ICW2: Master PIC vector offset + outb(PIC2_DATA, 0xe8); // ICW2: Slave PIC vector offset outb(PIC1_DATA, 4); // ICW3: tell Master PIC that there is a slave PIC at IRQ2 (0000 0100) outb(PIC2_DATA, 2); // ICW3: tell Slave PIC its cascade identity (0000 0010) outb(PIC1_DATA, ICW4_8086); outb(PIC2_DATA, ICW4_8086); - // mask interrupts - outb(PIC1_DATA, 0xfc); + // mask all interrupts + outb(PIC1_DATA, 0xff); outb(PIC2_DATA, 0xff); } |