backup/30dayMakeOS
1
0
Fork 1
mirror of https://github.com/yourtion/30dayMakeOS.git synced 2026-07-17 03:51:24 +08:00
Code Issues Packages Projects Releases Wiki Activity

初始化PIC

Browse Source
This commit is contained in:
Yourtion
2014-09-12 16:37:27 +08:00
parent 362a753c51
commit 8205320110
4 changed files with 45 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
06_day/bootpack.h
View File

@@ -67,3 +67,18 @@ void set_gatedesc(struct GATE_DESCRIPTOR *gd, int offset, int selector, int ar);
#define LIMIT_BOTPAK 0x0007ffff
#define AR_DATA32_RW 0x4092
#define AR_CODE32_ER 0x409a
/* int.c */
void init_pic(void);
#define PIC0_ICW1 0x0020
#define PIC0_OCW2 0x0020
#define PIC0_IMR 0x0021
#define PIC0_ICW2 0x0021
#define PIC0_ICW3 0x0021
#define PIC0_ICW4 0x0021
#define PIC1_ICW1 0x00a0
#define PIC1_OCW2 0x00a0
#define PIC1_IMR 0x00a1
#define PIC1_ICW2 0x00a1
#define PIC1_ICW3 0x00a1
#define PIC1_ICW4 0x00a1