mirror of https://github.com/stella-emu/stella.git
Fixed resetting of TIA when changing X/YStart and Width/Height. A full
TIA reset isn't required in this case, and isn't always correct. Instead, only the frame parameters should be reset. git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@1271 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
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stephena
parent
7c5e5af3f4
commit
227c357ece
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@ -13,7 +13,7 @@
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// See the file "license" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//
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// $Id: Console.cxx,v 1.120 2007-01-06 16:21:29 stephena Exp $
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// $Id: Console.cxx,v 1.121 2007-01-06 21:13:29 stephena Exp $
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//============================================================================
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#include <cassert>
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@ -483,7 +483,7 @@ void Console::changeXStart(int direction)
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strval << xstart;
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myProperties.set(Display_XStart, strval.str());
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((TIA*)myMediaSource)->recalc();
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((TIA*)myMediaSource)->frameReset();
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myOSystem->frameBuffer().refresh();
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message = "XStart ";
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@ -521,7 +521,7 @@ void Console::changeYStart(int direction)
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strval << ystart;
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myProperties.set(Display_YStart, strval.str());
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((TIA*)myMediaSource)->recalc();
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((TIA*)myMediaSource)->frameReset();
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myOSystem->frameBuffer().refresh();
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message = "YStart ";
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@ -565,7 +565,7 @@ void Console::changeWidth(int direction)
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strval << width;
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myProperties.set(Display_Width, strval.str());
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((TIA*)myMediaSource)->recalc();
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((TIA*)myMediaSource)->frameReset();
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initializeVideo(); // takes care of refreshing the screen
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message = "Width ";
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@ -603,7 +603,7 @@ void Console::changeHeight(int direction)
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strval << height;
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myProperties.set(Display_Height, strval.str());
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((TIA*)myMediaSource)->recalc();
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((TIA*)myMediaSource)->frameReset();
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initializeVideo(); // takes care of refreshing the screen
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message = "Height ";
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@ -13,7 +13,7 @@
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// See the file "license" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//
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// $Id: TIA.cxx,v 1.77 2007-01-06 16:21:31 stephena Exp $
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// $Id: TIA.cxx,v 1.78 2007-01-06 21:13:29 stephena Exp $
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//============================================================================
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#include <cassert>
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@ -131,60 +131,6 @@ void TIA::reset()
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// Reset the sound device
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mySound->reset();
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// Recalculate the size of the display
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recalc();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void TIA::systemCyclesReset()
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{
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// Get the current system cycle
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uInt32 cycles = mySystem->cycles();
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// Adjust the sound cycle indicator
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mySound->adjustCycleCounter(-1 * cycles);
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// Adjust the dump cycle
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myDumpDisabledCycle -= cycles;
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// Get the current color clock the system is using
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uInt32 clocks = cycles * 3;
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// Adjust the clocks by this amount since we're reseting the clock to zero
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myClockWhenFrameStarted -= clocks;
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myClockStartDisplay -= clocks;
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myClockStopDisplay -= clocks;
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myClockAtLastUpdate -= clocks;
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myVSYNCFinishClock -= clocks;
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myLastHMOVEClock -= clocks;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void TIA::recalc()
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{
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// Clear frame buffers
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clearBuffers();
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// Reset pixel pointer and drawing flag
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myFramePointer = myCurrentFrameBuffer;
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myYStart = atoi(myConsole.properties().get(Display_YStart).c_str());
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myHeight = atoi(myConsole.properties().get(Display_Height).c_str());
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// Calculate color clock offsets for starting and stoping frame drawing
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myStartDisplayOffset = 228 * myYStart;
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myStopDisplayOffset = myStartDisplayOffset + 228 * myHeight;
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// Reasonable values to start and stop the current frame drawing
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myClockWhenFrameStarted = mySystem->cycles() * 3;
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myClockStartDisplay = myClockWhenFrameStarted + myStartDisplayOffset;
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myClockStopDisplay = myClockWhenFrameStarted + myStopDisplayOffset;
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myClockAtLastUpdate = myClockWhenFrameStarted;
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myClocksToEndOfScanLine = 228;
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myVSYNCFinishClock = 0x7FFFFFFF;
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myScanlineCountForLastFrame = 0;
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myCurrentScanline = 0;
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// Currently no objects are enabled
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myEnabledObjects = 0;
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@ -250,6 +196,47 @@ void TIA::recalc()
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myAllowHMOVEBlanks =
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(myConsole.properties().get(Emulation_HmoveBlanks) == "YES");
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if(myConsole.getFormat().compare(0, 3, "PAL") == 0)
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{
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myColorLossEnabled = true;
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myMaximumNumberOfScanlines = 342;
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}
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else // NTSC
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{
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myColorLossEnabled = false;
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myMaximumNumberOfScanlines = 290;
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}
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// Recalculate the size of the display
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frameReset();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void TIA::frameReset()
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{
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// Clear frame buffers
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clearBuffers();
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// Reset pixel pointer and drawing flag
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myFramePointer = myCurrentFrameBuffer;
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myYStart = atoi(myConsole.properties().get(Display_YStart).c_str());
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myHeight = atoi(myConsole.properties().get(Display_Height).c_str());
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// Calculate color clock offsets for starting and stoping frame drawing
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myStartDisplayOffset = 228 * myYStart;
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myStopDisplayOffset = myStartDisplayOffset + 228 * myHeight;
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// Reasonable values to start and stop the current frame drawing
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myClockWhenFrameStarted = mySystem->cycles() * 3;
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myClockStartDisplay = myClockWhenFrameStarted + myStartDisplayOffset;
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myClockStopDisplay = myClockWhenFrameStarted + myStopDisplayOffset;
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myClockAtLastUpdate = myClockWhenFrameStarted;
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myClocksToEndOfScanLine = 228;
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myVSYNCFinishClock = 0x7FFFFFFF;
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myScanlineCountForLastFrame = 0;
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myCurrentScanline = 0;
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myFrameXStart = atoi(myConsole.properties().get(Display_XStart).c_str());
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myFrameWidth = atoi(myConsole.properties().get(Display_Width).c_str());
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myFrameYStart = atoi(myConsole.properties().get(Display_YStart).c_str());
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@ -270,17 +257,30 @@ void TIA::recalc()
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// Values are illegal so reset to default values
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myFrameHeight = 200;
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}
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}
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if(myConsole.getFormat().compare(0, 3, "PAL") == 0)
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{
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myColorLossEnabled = true;
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myMaximumNumberOfScanlines = 342;
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}
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else // NTSC
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{
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myColorLossEnabled = false;
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myMaximumNumberOfScanlines = 290;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void TIA::systemCyclesReset()
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{
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// Get the current system cycle
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uInt32 cycles = mySystem->cycles();
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// Adjust the sound cycle indicator
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mySound->adjustCycleCounter(-1 * cycles);
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// Adjust the dump cycle
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myDumpDisabledCycle -= cycles;
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// Get the current color clock the system is using
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uInt32 clocks = cycles * 3;
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// Adjust the clocks by this amount since we're reseting the clock to zero
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myClockWhenFrameStarted -= clocks;
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myClockStartDisplay -= clocks;
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myClockStopDisplay -= clocks;
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myClockAtLastUpdate -= clocks;
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myVSYNCFinishClock -= clocks;
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myLastHMOVEClock -= clocks;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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@ -13,7 +13,7 @@
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// See the file "license" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//
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// $Id: TIA.hxx,v 1.40 2007-01-06 16:21:31 stephena Exp $
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// $Id: TIA.hxx,v 1.41 2007-01-06 21:13:29 stephena Exp $
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//============================================================================
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#ifndef TIA_HXX
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@ -42,7 +42,7 @@ class Settings;
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be displayed on screen.
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@author Bradford W. Mott
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@version $Id: TIA.hxx,v 1.40 2007-01-06 16:21:31 stephena Exp $
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@version $Id: TIA.hxx,v 1.41 2007-01-06 21:13:29 stephena Exp $
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*/
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class TIA : public Device , public MediaSource
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{
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@ -75,6 +75,11 @@ class TIA : public Device , public MediaSource
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*/
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virtual void reset();
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/**
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Reset frame to change XStart/YStart/Width/Height properties
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*/
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virtual void frameReset();
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/**
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Notification method invoked by the system right before the
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system resets its cycle counter to zero. It may be necessary
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@ -82,11 +87,6 @@ class TIA : public Device , public MediaSource
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*/
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virtual void systemCyclesReset();
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/**
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Recalculate set XStart/YStart/Width/Height properties
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*/
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virtual void recalc();
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/**
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Install TIA in the specified system. Invoked by the system
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when the TIA is attached to it.
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