Forgot to add these to the previous commit.

2020-05-08 10:17:34 -05:00
parent 3d4557343f
commit ff96bef431
3 changed files with 25 additions and 4 deletions
@@ -1,5 +1,26 @@
+#include "../includes/io.h"

-void kmain()
+void write_screen(unsigned int, char, unsigned char, unsigned char);
+void move(unsigned short);
+
+extern void kmain()
 {
-	asm("hlt");
+	write_screen(0, 'A', 2, 8);
+	move(80);
+	//asm("hlt");
+}
+
+void write_screen(unsigned int i, char c, unsigned char fg, unsigned char bg)
+{
+	char *fb = (char *) 0x000B8000;
+	fb[i] = c;
+	fb[i + 1] = ((fg & 0x0F) << 4) | (bg & 0x0F);
+}
+
+void move(unsigned short pos)
+{
+	outb(0x3D4, 14);
+	outb(0x3D5, ((pos >> 8 ) & 0x00FF));
+	outb(0x3D4, 15);
+	outb(0x3D5, pos & 0x00FF);
 }