From 3e0d421012eb4efb29576993ed7a78aa65b0cfce Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Herm=C3=A8s=20B=C3=A9lusca-Ma=C3=AFto?=
 <hermes.belusca-maito@reactos.org>
Date: Wed, 10 Jun 2015 01:30:30 +0000
Subject: [PATCH] [NTVDM] - Some INT --> UINT fixes. - Fix the third value of
 MemorySizes according to the specification, confirmed by Aleksander.

svn path=/trunk/; revision=68099
---
 reactos/subsystems/mvdm/ntvdm/bios/vidbios.c  | 23 +++++++++----------
 .../mvdm/ntvdm/hardware/video/vga.c           |  4 ++--
 2 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/reactos/subsystems/mvdm/ntvdm/bios/vidbios.c b/reactos/subsystems/mvdm/ntvdm/bios/vidbios.c
index 8f5d50e9ff0..4b923a4e5eb 100644
--- a/reactos/subsystems/mvdm/ntvdm/bios/vidbios.c
+++ b/reactos/subsystems/mvdm/ntvdm/bios/vidbios.c
@@ -2120,7 +2120,7 @@ static __inline VOID VgaSetSinglePaletteRegister(BYTE Index, BYTE Value)
 
 static BOOLEAN VgaSetRegisters(PVGA_REGISTERS Registers)
 {
-    INT i;
+    UINT i;
 
     if (Registers == NULL) return FALSE;
 
@@ -2389,21 +2389,21 @@ static inline BYTE VidBiosGetVideoMode(VOID)
 
 static inline VOID VidBiosClearScreen(VOID)
 {
-    static const DWORD MemoryMaps[4] = { 0xA0000, 0xA0000, 0xB0000, 0xB8000 };
-    static const DWORD MemorySizes[4] = { 0x20000, 0x10000, 0x10000, 0x8000 };
+    static const DWORD MemoryMaps[4]  = { 0xA0000, 0xA0000, 0xB0000, 0xB8000 };
+    static const DWORD MemorySizes[4] = { 0x20000, 0x10000, 0x08000, 0x08000 };
 
     DWORD VideoAddress;
-    BYTE Buffer[0x20000];
     DWORD BufferSize;
     BYTE Misc;
+    BYTE Buffer[0x20000];
 
     /* Read the misc register */
     IOWriteB(VGA_GC_INDEX, VGA_GC_MISC_REG);
     Misc = IOReadB(VGA_GC_DATA);
 
-    /* Get the video address */
+    /* Get the video address and buffer size */
     VideoAddress = MemoryMaps[(Misc >> 2) & 3];
-    BufferSize = MemorySizes[(Misc >> 2) & 3];
+    BufferSize  = MemorySizes[(Misc >> 2) & 3];
 
     if (Misc & 1)
     {
@@ -2412,9 +2412,8 @@ static inline VOID VidBiosClearScreen(VOID)
     }
     else
     {
-        INT i;
-
         /* Text mode */
+        UINT i;
         for (i = 0; i < (BufferSize >> 1); i++)
         {
             ((PWORD)Buffer)[i] = MAKEWORD(' ', DEFAULT_ATTRIBUTE);
@@ -3174,7 +3173,7 @@ VOID WINAPI VidBiosVideoService(LPWORD Stack)
                 /* Set All Palette Registers */
                 case 0x02:
                 {
-                    INT i;
+                    UINT i;
                     LPBYTE Buffer = SEG_OFF_TO_PTR(getES(), getDX());
 
                     /* Set the palette registers */
@@ -3258,7 +3257,7 @@ VOID WINAPI VidBiosVideoService(LPWORD Stack)
                 /* Get All Palette Registers */
                 case 0x09:
                 {
-                    INT i;
+                    UINT i;
                     LPBYTE Buffer = SEG_OFF_TO_PTR(getES(), getDX());
 
                     /* Get the palette registers */
@@ -3300,7 +3299,7 @@ VOID WINAPI VidBiosVideoService(LPWORD Stack)
                 /* Set Block of DAC Registers */
                 case 0x12:
                 {
-                    INT i;
+                    UINT i;
                     LPBYTE Buffer = SEG_OFF_TO_PTR(getES(), getDX());
 
                     /* Write the index */
@@ -3335,7 +3334,7 @@ VOID WINAPI VidBiosVideoService(LPWORD Stack)
                 /* Get Block of DAC Registers */
                 case 0x17:
                 {
-                    INT i;
+                    UINT i;
                     LPBYTE Buffer = SEG_OFF_TO_PTR(getES(), getDX());
 
                     /* Write the index */
diff --git a/reactos/subsystems/mvdm/ntvdm/hardware/video/vga.c b/reactos/subsystems/mvdm/ntvdm/hardware/video/vga.c
index f11d1a691aa..b6fb591552e 100644
--- a/reactos/subsystems/mvdm/ntvdm/hardware/video/vga.c
+++ b/reactos/subsystems/mvdm/ntvdm/hardware/video/vga.c
@@ -771,7 +771,7 @@ static VOID VgaRestoreDefaultPalette(PPALETTEENTRY Entries, USHORT NumOfEntries)
 
 static BOOLEAN VgaInitializePalette(VOID)
 {
-    INT i;
+    UINT i;
     BOOLEAN Result = FALSE;
     LPLOGPALETTE Palette, TextPalette;
 
@@ -1576,7 +1576,7 @@ static inline VOID VgaWriteCrtc(BYTE Data)
 
 static inline VOID VgaWriteDac(BYTE Data)
 {
-    INT i, PaletteIndex;
+    UINT i, PaletteIndex;
     PALETTEENTRY Entry;
 
     /* Set the value */