#define MODE_LFB (1 << 14)
-extern void *low_mem_buffer;
+extern unsigned char low_mem_buffer[];
struct vbe_info *vbe_get_info(void)
{
struct vbe_info *info;
struct int86regs regs;
- info = low_mem_buffer;
+ info = (struct vbe_info*)low_mem_buffer;
memcpy(info->sig, "VBE2", 4);
memset(®s, 0, sizeof regs);
- regs.es = (uint32_t)low_mem_buffer >> 4;
+ regs.es = (uint32_t)info >> 4;
regs.eax = 0x4f00;
int86(0x10, ®s);
+ if((regs.eax & 0xffff) != 0x4f) {
+ return 0;
+ }
+
return info;
}
struct vbe_mode_info *mi;
struct int86regs regs;
- mi = low_mem_buffer;
+ mi = (struct vbe_mode_info*)(low_mem_buffer + 512);
memset(®s, 0, sizeof regs);
- regs.es = (uint32_t)low_mem_buffer >> 4;
+ regs.es = (uint32_t)mi >> 4;
regs.eax = 0x4f01;
regs.ecx = mode;
int86(0x10, ®s);
- if(regs.eax & 0xff00) {
+ if((regs.eax & 0xffff) != 0x4f) {
return 0;
}