From cb4ebffe888adf5c2064c1b2444747c424e75da9 Mon Sep 17 00:00:00 2001
From: Braiden Vasco <braiden-vasco@users.noreply.github.com>
Date: Mon, 6 Nov 2017 10:37:51 +0000
Subject: [PATCH] Add comments

---
 arch/pic.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/pic.c b/arch/pic.c
index f0e5223..0de4e6c 100644
--- a/arch/pic.c
+++ b/arch/pic.c
@@ -13,15 +13,19 @@ void pic_remap(const unsigned char master_irq_start, const unsigned char slave_i
 {
     logger_info_from("pic", "Remap the IRQ table.");
 
+    // Start the initialization sequence
     outportb(PIC_MASTER_COMMAND, 0x11);
     outportb(PIC_SLAVE_COMMAND,  0x11);
 
+    // Set IRQ vectors
     outportb(PIC_MASTER_DATA, master_irq_start);
     outportb(PIC_SLAVE_DATA,  slave_irq_start);
 
+    // Connect master and slave with each other
     outportb(PIC_MASTER_DATA, 0x04);
     outportb(PIC_SLAVE_DATA,  0x02);
 
+    // 8086/88 (MCS-80/85) mode
     outportb(PIC_MASTER_DATA, 0x01);
     outportb(PIC_SLAVE_DATA,  0x01);