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don't screw up gfx regs when using mouse on non-vga machine modes (workaround)

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3154
This commit is contained in:
Sebastian Strohhäcker 2008-05-15 20:12:37 +00:00
parent caa9317946
commit 581a6c2322
1 changed files with 26 additions and 18 deletions
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44
src/ints/mouse.cpp
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: mouse.cpp,v 1.72 2008-03-08 22:05:05 c2woody Exp $ */
/* $Id: mouse.cpp,v 1.73 2008-05-15 20:12:37 c2woody Exp $ */
#include <string.h>
#include <math.h>
@ -256,28 +256,36 @@ void DrawCursorText() {
static Bit8u gfxReg3CE[9];
static Bit8u index3C4,gfxReg3C5;
void SaveVgaRegisters() {
for (int i=0; i<9; i++) {
IO_Write (0x3CE,i);
gfxReg3CE[i] = IO_Read(0x3CF);
}
/* Setup some default values in GFX regs that should work */
IO_Write(0x3CE,3); IO_Write(0x3Cf,0); //disable rotate and operation
IO_Write(0x3CE,5); IO_Write(0x3Cf,gfxReg3CE[5]&0xf0); //Force read/write mode 0
if (IS_VGA_ARCH) {
for (int i=0; i<9; i++) {
IO_Write (0x3CE,i);
gfxReg3CE[i] = IO_Read(0x3CF);
}
/* Setup some default values in GFX regs that should work */
IO_Write(0x3CE,3); IO_Write(0x3Cf,0); //disable rotate and operation
IO_Write(0x3CE,5); IO_Write(0x3Cf,gfxReg3CE[5]&0xf0); //Force read/write mode 0
//Set Map to all planes. Celtic Tales
index3C4 = IO_Read(0x3c4); IO_Write(0x3C4,2);
gfxReg3C5 = IO_Read(0x3C5); IO_Write(0x3C5,0xF);
//Set Map to all planes. Celtic Tales
index3C4 = IO_Read(0x3c4); IO_Write(0x3C4,2);
gfxReg3C5 = IO_Read(0x3C5); IO_Write(0x3C5,0xF);
} else if (machine==MCH_EGA) {
//Set Map to all planes.
IO_Write(0x3C4,2);
IO_Write(0x3C5,0xF);
}
}
void RestoreVgaRegisters() {
for (int i=0; i<9; i++) {
IO_Write(0x3CE,i);
IO_Write(0x3CF,gfxReg3CE[i]);
}
if (IS_VGA_ARCH) {
for (int i=0; i<9; i++) {
IO_Write(0x3CE,i);
IO_Write(0x3CF,gfxReg3CE[i]);
}
IO_Write(0x3C4,2);
IO_Write(0x3C5,gfxReg3C5);
IO_Write(0x3C4,index3C4);
IO_Write(0x3C4,2);
IO_Write(0x3C5,gfxReg3C5);
IO_Write(0x3C4,index3C4);
}
}
void ClipCursorArea(Bit16s& x1, Bit16s& x2, Bit16s& y1, Bit16s& y2,