Reload GDT

1 files changed, 27 insertions, 15 deletions

diff --git a/src/utils/print.c b/src/utils/print.c
index 8fab941..dbed000 100644
--- a/src/utils/print.c
+++ b/src/utils/print.c
@@ -1,24 +1,36 @@
 #include "print.h"
-#include "types.h"
 
 #define MAX_COL 80
 #define MAX_LINE 25
 
-char *video=(char *)0xB8000;
-u8 col=0;
-u8 line=0;
+struct VIDEO_STATE {
+  u8 *mem;
+  u8 col;
+  u8 line;
+  u8 bg;
+  u8 fg;
+};
 
+VIDEO_STATE VS={
+  (u8 *)0xB8000,
+  0,
+  0,
+  BLACK,
+  GRAY,
+};
 
 void putchar(char c){
   // Print char
-  video[col*2+MAX_COL*line*2]=c;
+  VS.mem[VS.col*2+MAX_COL*VS.line*2]=c;
+  VS.mem[VS.col*2+MAX_COL*VS.line*2+1]=VS.fg|VS.bg<<4;
+  
   // Refresh location
-  col+=1;
-  if(col>= MAX_COL){
-    col=0;
-    line+=1;
-    if(line>=MAX_LINE){
-      line=MAX_LINE-1;
+  VS.col+=1;
+  if(VS.col>= MAX_COL){
+    VS.col=0;
+    VS.line+=1;
+    if(VS.line>=MAX_LINE){
+      VS.line=MAX_LINE-1;
       scrollup();
     }
   }
@@ -39,13 +51,13 @@ void clear(){
 }
 
 void scrollup(){
-  // Move line up
+  // Move VS.line up
   for(char i=1;i<=MAX_LINE;i++){
     for(char j=0;j<=MAX_COL;j++)
-      video[j*2+MAX_COL*(i-1)*2]=video[j*2+MAX_COL*i*2];
+      VS.mem[j*2+MAX_COL*(i-1)*2]=VS.mem[j*2+MAX_COL*i*2];
   }
-  // Clear last line
+  // Clear last VS.line
   for(char i=0;i<=MAX_COL;i++){
-    video[col*2+MAX_COL*(MAX_LINE-1)*2]='\0';
+    VS.mem[i*2+MAX_COL*(MAX_LINE-1)*2]='\0';
   }
 }