Import backup from 2003-11-03

Functions.c

@@ -107,6 +107,13 @@ inline void init_timer()
 	outportb(0x40, 0x2e); //msb
 }
 
+
+//Invalidates the page tables to re-cache the Translation Lookaside Buffer
+/*inline void invlpg()
+{
+	asm("invlpg");
+}*/
+
 //Signals an End Of Interrupt signal to the first PIC
 inline void eoi()
 {

functions.h

@@ -21,6 +21,8 @@ inline void eoi();
 inline void eoi2();
 inline dword kernel_size();
 inline void init_timer();
+//inline void invlpg();
+
 
 
 

kernel.c

@@ -45,8 +45,8 @@ void k_init()
 	console_cls();
 	remap_pics(0x20, 0x28);
 	init_timer();
-	video_init((ModeInfoBlock *) 0x90306);
 	mm_init();
+	video_init((ModeInfoBlock *) 0x90306);
 	vmm_init();
 	mouse_init();
 	vmm_enable_paging();
@@ -74,7 +74,7 @@ void isr(dword num)
 	{
 	case 0x20:         		// IRQ0 - timer interrupt
 		timer++;
-		(*(byte *)(0xb8000+3998))++;
+		(*(byte *)(0xb8000))++;
 		eoi();
 		break;
 	case 0x21:  			// IRQ1 - keyboard interrupt

video.c

@@ -18,6 +18,8 @@ void video_init(ModeInfoBlock *mib)
 		vid_ptr32 = (dword *) video_mode.PhysBasePtr;
 	}
 	
+	vid_Buffer = mm_palloc((4*video_mode.XResolution*video_mode.YResolution)/4096+1, PID_KERNEL);
+
 	dword tot = ((video_mode.XResolution) * (video_mode.YResolution));
 	int a;
 	for (a = 0; a < tot; a++)

video.h

@@ -57,7 +57,7 @@ ModeInfoBlock	video_mode;
 byte	*vid_ptr24;
 word	*vid_ptr16;
 dword	*vid_ptr32;
-
+dword	*vid_Buffer;