--- hatari/src/includes/vdi.h	2019/04/01 07:09:16	1.1
+++ hatari/src/includes/vdi.h	2019/04/09 08:48:45	1.1.1.6
@@ -1,20 +1,42 @@
 /*
-  Hatari
+  Hatari - vdi.h
+
+  This file is distributed under the GNU Public License, version 2. or at
+  your option any later version. Read the file gpl.txt for details.
 */
 
-#define MAX_VDI_WIDTH  1024
-#define MAX_VDI_HEIGHT  768
+#ifndef HATARI_VDI_H
+#define HATARI_VDI_H
+
 #define MAX_VDI_PLANES  4
+/* TOS needs width to be aligned to 128/planes and height to VDI text
+ * height (16 in 1-plane mode, 8 otherwise).   Use TT hi-res as max
+ * (max size affects memory usage).
+ */
+#define MAX_VDI_WIDTH  1280
+#define MAX_VDI_HEIGHT  960
+/* next in-all-bitdepths aligned size up from smallest ST res. */
+#define MIN_VDI_WIDTH   384
+#define MIN_VDI_HEIGHT  208
+
 
-extern BOOL bHoldScreenDisplay;
-extern int LineABase,FontBase;
-extern unsigned int VDI_OldPC;
-extern BOOL bUseVDIRes;
-extern int VDIWidth,VDIHeight,VDIRes;
-extern int VDIPlanes,VDIColours,VDICharHeight;
-
-extern void VDI_SetResolution(int GEMRes,int GEMColour);
-extern BOOL VDI(void);
-extern void VDI_OpCode(void);
+enum
+{
+  GEMCOLOR_2,
+  GEMCOLOR_4,
+  GEMCOLOR_16
+};
+
+extern Uint32 VDI_OldPC;
+extern bool bUseVDIRes;
+extern int VDIWidth,VDIHeight;
+extern int VDIRes,VDIPlanes;
+
+extern int VDI_Limit(int value, int align, int min, int max);
+extern void VDI_SetResolution(int GEMColor, int WidthRequest, int HeightRequest);
+extern bool VDI(void);
 extern void VDI_FixDesktopInf(void);
-extern void VDI_LineA(void);
+extern void VDI_LineA(Uint32 LineABase, Uint32 FontBase);
+extern void VDI_Complete(void);
+
+#endif  /* HATARI_VDI_H */