+int vbe_set_scanlen(int len, int mode)
+{
+ struct dpmi_real_regs regs;
+
+ memset(®s, 0, sizeof regs);
+ regs.eax = 0x4f06;
+ regs.ebx = mode;
+ regs.ecx = len & 0xffff;
+ dpmi_real_int(0x10, ®s);
+
+ if(regs.eax == 0x100) {
+ return -1;
+ }
+ return regs.ecx & 0xffff;
+}
+
+int vbe_get_scanlen(int mode)
+{
+ int res;
+ struct dpmi_real_regs regs;
+
+ memset(®s, 0, sizeof regs);
+ regs.eax = 0x4f06;
+ regs.ebx = 1;
+ dpmi_real_int(0x10, ®s);
+
+ if(regs.eax == 0x100) {
+ return -1;
+ }
+
+ if(mode == VBE_SCANLEN_PIXELS) {
+ res = regs.ecx & 0xffff;
+ } else {
+ res = regs.ebx & 0xffff;
+ }
+ return res;
+}
+
+