1991/0723/pc/vga.c (diff list | history)

pc/vga.c on 1991/0723
1991/0723		#include "u.h" #include "lib.h" #include "mem.h" #include "dat.h" #include "fns.h" #include "io.h" enum { GRX= 0x3CE, /* index to graphics registers */ GR= 0x3CF, /* graphics registers 0-8 */ }; /* * look at VGA registers */ void vgainit(void) { int i; uchar x; for(i = 0; i < 9; i++){ outb(GRX, i); x = inb(GR); print("GR%d == %ux\n", i, x); } panic("for the hell of it"); }