From eb3de2861b532b31e633b10fbf14ae87d5980155 Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jackpot51@gmail.com>
Date: Sat, 11 Feb 2017 20:50:41 -0700
Subject: [PATCH] Remove PIC initialization
---
x86_64/initialize.asm | 23 -----------------------
x86_64/startup-common.asm | 4 ----
2 files changed, 27 deletions(-)
diff --git a/x86_64/initialize.asm b/x86_64/initialize.asm
index e723d37..90a42d4 100644
--- a/x86_64/initialize.asm
+++ b/x86_64/initialize.asm
@@ -53,26 +53,3 @@ initialize:
;or al, 0x40
;out 0x71, al
ret
-
-.pic: ;sets up IRQs at int 20-2F
- mov al, 0x11
- out 0x20, al
- out 0xA0, al
- mov al, 0x20 ;IRQ0 vector
- out 0x21, al
- mov al, 0x28 ;IRQ8 vector
- out 0xA1, al
- mov al, 4
- out 0x21, al
- mov al, 2
- out 0xA1, al
- mov al, 1
- out 0x21, al
- out 0xA1, al
- xor al, al ;no IRQ masks
- out 0x21, al
- out 0xA1, al
- mov al, 0x20 ;reset PIC's
- out 0xA0, al
- out 0x20, al
- ret
diff --git a/x86_64/startup-common.asm b/x86_64/startup-common.asm
index 9677bbc..3a86a9b 100644
--- a/x86_64/startup-common.asm
+++ b/x86_64/startup-common.asm
@@ -86,10 +86,6 @@ finished_loading:
call printrm
call initialize.pit
- mov si, init_pic_msg
- call printrm
- call initialize.pic
-
mov si, startup_arch_msg
call printrm
--
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