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1.1 ! root 1: /* ! 2: Hatari - video.h ! 3: ! 4: This file is distributed under the GNU Public License, version 2 or at ! 5: your option any later version. Read the file gpl.txt for details. ! 6: */ ! 7: ! 8: #ifndef HATARI_VIDEO_H ! 9: #define HATARI_VIDEO_H ! 10: ! 11: /* ! 12: All the following processor timings are based on a bog standard 8MHz 68000 as ! 13: found in all standard STs: ! 14: ! 15: Clock cycles per line (50Hz) : 512 ! 16: NOPs per scan line (50Hz) : 128 ! 17: Scan lines per VBL (50Hz) : 313 (64 at top,200 screen,49 bottom) ! 18: ! 19: Clock cycles per line (60Hz) : 508 ! 20: NOPs per scan line (60Hz) : 127 ! 21: Scan lines per VBL (60Hz) : 263 ! 22: ! 23: Clock cycles per VBL (50Hz) : 160256 ! 24: NOPs per VBL (50Hz) : 40064 ! 25: ! 26: Pixels per clock cycle (low res) : 1 ! 27: Pixels per clock cycle (med res) : 2 ! 28: Pixels per clock cycle (high res) : 4 ! 29: Pixels per NOP (low res) : 4 ! 30: Pixels per NOP (med res) : 8 ! 31: Pixels per NOP (high res) : 16 ! 32: */ ! 33: ! 34: /* Scan lines per frame */ ! 35: #define SCANLINES_PER_FRAME_50HZ 313 /* Number of scan lines per frame in 50 Hz */ ! 36: #define SCANLINES_PER_FRAME_60HZ 263 /* Number of scan lines per frame in 60 Hz */ ! 37: #define SCANLINES_PER_FRAME_71HZ 501 /* could also be 500 ? */ ! 38: #define MAX_SCANLINES_PER_FRAME SCANLINES_PER_FRAME_71HZ /* Max. number of scan lines per frame */ ! 39: ! 40: /* Cycles per line */ ! 41: #define CYCLES_PER_LINE_50HZ 512 ! 42: #define CYCLES_PER_LINE_60HZ 508 ! 43: #define CYCLES_PER_LINE_71HZ 224 ! 44: ! 45: /* Vertical border/display enable/disable: ! 46: * Normal screen starts 63 lines in, top border is 29 lines */ ! 47: #define VIDEO_START_HBL_50HZ 63 /* Usually the first line of the displayed screen in 50 Hz */ ! 48: #define VIDEO_START_HBL_60HZ 34 /* The first line of the displayed screen in 60 Hz */ ! 49: #define VIDEO_START_HBL_71HZ 34 /* FIXME: 34 is not verified */ ! 50: #define FIRST_VISIBLE_HBL_50HZ 34 /* At this line we start rendering our screen in 50 Hz */ ! 51: #define FIRST_VISIBLE_HBL_60HZ (34-29) /* At this line we start rendering our screen in 60 Hz (29 = 63-34) */ ! 52: #define FIRST_VISIBLE_HBL_71HZ 34 /* FIXME: 34 is not verified */ ! 53: ! 54: #define VIDEO_HEIGHT_HBL_COLOR 200 /* This is usually the height of the screen */ ! 55: #define VIDEO_HEIGHT_HBL_MONO 400 ! 56: ! 57: #define VIDEO_HEIGHT_BOTTOM_50HZ 47 /* number of lines in a 50 Hz bottom border */ ! 58: #define VIDEO_HEIGHT_BOTTOM_60HZ 29 /* number of lines in a 60 Hz bottom border */ ! 59: ! 60: #define VIDEO_END_HBL_50HZ ( VIDEO_START_HBL_50HZ + VIDEO_HEIGHT_HBL_COLOR ) /* 263 */ ! 61: #define VIDEO_END_HBL_60HZ ( VIDEO_START_HBL_60HZ + VIDEO_HEIGHT_HBL_COLOR ) /* 234 */ ! 62: ! 63: #define LINE_REMOVE_TOP_CYCLE_STF 504 /* switch to 60 Hz on line 33 should not occur after cycle 504 to remove top border */ ! 64: /* switch to 50 Hz should occur after cycle 504 on line 33 */ ! 65: #define LINE_REMOVE_BOTTOM_CYCLE_STF 504 /* same value than top border, but on line 262 (50 Hz) or 233 (60 Hz) */ ! 66: ! 67: #define LINE_REMOVE_TOP_CYCLE_STE 500 /* on STE, switch can occur 4 cycles earlier than STF */ ! 68: #define LINE_REMOVE_BOTTOM_CYCLE_STE 500 ! 69: ! 70: ! 71: #define LINE_START_CYCLE_50 56 ! 72: #define LINE_START_CYCLE_60 52 ! 73: #define LINE_START_CYCLE_71 0 ! 74: #define LINE_END_CYCLE_50 376 /* LINE_START_CYCLE_50 + 320 */ ! 75: #define LINE_END_CYCLE_60 372 /* LINE_START_CYCLE_60 + 320 */ ! 76: #define LINE_END_CYCLE_71 160 ! 77: #define LINE_END_CYCLE_NO_RIGHT 460 /* 372 + 44*2 */ ! 78: #define LINE_END_CYCLE_50_2 (LINE_END_CYCLE_50+44*2) /* 464, used in enchanted lands */ ! 79: #define LINE_END_CYCLE_FULL 512 /* used in enchanted lands */ ! 80: #define LINE_SCROLL_13_CYCLE_50 20 /* 13 pixels right "hardware" scrolling */ ! 81: #define LINE_SCROLL_9_CYCLE_50 24 /* 9 pixels right "hardware" scrolling */ ! 82: #define LINE_SCROLL_5_CYCLE_50 28 /* 5 pixels right "hardware" scrolling */ ! 83: #define LINE_SCROLL_1_CYCLE_50 32 /* 1 pixels right "hardware" scrolling */ ! 84: #define LINE_LEFT_MED_CYCLE_1 20 /* med res overscan, shifts display by 0 byte */ ! 85: #define LINE_LEFT_MED_CYCLE_2 28 /* med res overscan, shifts display by 2 bytes */ ! 86: #define LINE_EMPTY_CYCLE_71_STF 28 /* on STF switch to hi/lo will create an empty line */ ! 87: #define LINE_EMPTY_CYCLE_71_STE (28+4) /* on STE switch to hi/lo will create an empty line */ ! 88: ! 89: /* Bytes for opened left and right border: */ ! 90: #define BORDERBYTES_NORMAL 160 /* size of a "normal" line */ ! 91: #define BORDERBYTES_LEFT 26 ! 92: #define BORDERBYTES_LEFT_2_STE 20 ! 93: #define BORDERBYTES_RIGHT 44 ! 94: #define BORDERBYTES_RIGHT_FULL 22 ! 95: ! 96: /* Legacy defines: */ ! 97: #define CYCLES_PER_FRAME (nScanlinesPerFrame*nCyclesPerLine) /* Cycles per VBL @ 50fps = 160256 */ ! 98: ! 99: ! 100: #define VBL_VIDEO_CYCLE_OFFSET_STF 64 /* value of cycle counter when VBL signal is sent */ ! 101: #define VBL_VIDEO_CYCLE_OFFSET_STE (64+4) /* 4 cycles difference on STE */ ! 102: ! 103: #define HBL_VIDEO_CYCLE_OFFSET 0 /* cycles after end of current line (ie on every 512 cycles in 50 Hz) */ ! 104: #define TIMERB_VIDEO_CYCLE_OFFSET 28 /* cycles after last displayed pixels : 376+28 in 50 Hz or 372+28 in 60 Hz */ ! 105: ! 106: /* This is when ff8205/07/09 are reloaded with the content of ff8201/03 (on line 310 in 50 Hz) */ ! 107: #define RESTART_VIDEO_COUNTER_CYCLE_STF ( (SCANLINES_PER_FRAME_50HZ-3) * CYCLES_PER_LINE_50HZ + 48 ) ! 108: #define RESTART_VIDEO_COUNTER_CYCLE_STE ( (SCANLINES_PER_FRAME_50HZ-3) * CYCLES_PER_LINE_50HZ + 48 + 4 ) /* 4 cycles later than STF */ ! 109: ! 110: /* anything above 4 uses automatic frameskip */ ! 111: #define AUTO_FRAMESKIP_LIMIT 5 ! 112: ! 113: extern int STRes; ! 114: extern int TTRes; ! 115: extern int nFrameSkips; ! 116: extern bool bUseSTShifter; ! 117: extern bool bUseHighRes; ! 118: extern int nVBLs; ! 119: extern int nHBL; ! 120: extern int nStartHBL; ! 121: extern int nEndHBL; ! 122: extern int OverscanMode; ! 123: extern Uint16 HBLPalettes[]; ! 124: extern Uint16 *pHBLPalettes; ! 125: extern Uint32 HBLPaletteMasks[]; ! 126: extern Uint32 *pHBLPaletteMasks; ! 127: extern Uint32 VideoBase; ! 128: extern int nScreenRefreshRate; ! 129: ! 130: extern int nScanlinesPerFrame; ! 131: extern int nCyclesPerLine; ! 132: ! 133: extern int LineTimerBCycle; ! 134: extern int TimerBEventCountCycleStart; ! 135: ! 136: extern int LastCycleHblException; ! 137: ! 138: extern int HblJitterIndex; ! 139: extern int HblJitterArray[]; ! 140: extern int HblJitterArrayPending[]; ! 141: extern int VblJitterIndex; ! 142: extern int VblJitterArray[]; ! 143: extern int VblJitterArrayPending[]; ! 144: ! 145: ! 146: /*--------------------------------------------------------------*/ ! 147: /* Functions prototypes */ ! 148: /*--------------------------------------------------------------*/ ! 149: ! 150: extern void Video_MemorySnapShot_Capture(bool bSave); ! 151: ! 152: extern void Video_Reset(void); ! 153: extern void Video_Reset_Glue(void); ! 154: ! 155: extern void Video_ConvertPosition( int FrameCycles , int *pHBL , int *pLineCycles ); ! 156: extern void Video_GetPosition( int *pFrameCycles , int *pHBL , int *pLineCycles ); ! 157: extern void Video_GetPosition_OnWriteAccess( int *pFrameCycles , int *pHBL , int *pLineCycles ); ! 158: extern void Video_GetPosition_OnReadAccess( int *pFrameCycles , int *pHBL , int *pLineCycles ); ! 159: ! 160: extern void Video_Sync_WriteByte(void); ! 161: ! 162: extern int Video_TimerB_GetPos( int LineNumber ); ! 163: ! 164: extern void Video_InterruptHandler_HBL(void); ! 165: extern void Video_InterruptHandler_EndLine(void); ! 166: ! 167: extern void Video_SetScreenRasters(void); ! 168: extern void Video_GetTTRes(int *width, int *height, int *bpp); ! 169: extern bool Video_RenderTTScreen(void); ! 170: ! 171: extern void Video_AddInterruptTimerB ( int Pos ); ! 172: ! 173: extern void Video_StartInterrupts ( int PendingCyclesOver ); ! 174: extern void Video_InterruptHandler_VBL(void); ! 175: ! 176: extern void Video_ScreenBaseSTE_WriteByte(void); ! 177: extern void Video_ScreenCounter_ReadByte(void); ! 178: extern void Video_ScreenCounter_WriteByte(void); ! 179: extern void Video_Sync_ReadByte(void); ! 180: extern void Video_BaseLow_ReadByte(void); ! 181: extern void Video_LineWidth_ReadByte(void); ! 182: extern void Video_ShifterMode_ReadByte(void); ! 183: extern void Video_HorScroll_Read(void); ! 184: extern void Video_LineWidth_WriteByte(void); ! 185: extern void Video_Color0_WriteWord(void); ! 186: extern void Video_Color1_WriteWord(void); ! 187: extern void Video_Color2_WriteWord(void); ! 188: extern void Video_Color3_WriteWord(void); ! 189: extern void Video_Color4_WriteWord(void); ! 190: extern void Video_Color5_WriteWord(void); ! 191: extern void Video_Color6_WriteWord(void); ! 192: extern void Video_Color7_WriteWord(void); ! 193: extern void Video_Color8_WriteWord(void); ! 194: extern void Video_Color9_WriteWord(void); ! 195: extern void Video_Color10_WriteWord(void); ! 196: extern void Video_Color11_WriteWord(void); ! 197: extern void Video_Color12_WriteWord(void); ! 198: extern void Video_Color13_WriteWord(void); ! 199: extern void Video_Color14_WriteWord(void); ! 200: extern void Video_Color15_WriteWord(void); ! 201: extern void Video_ShifterMode_WriteByte(void); ! 202: extern void Video_HorScroll_Write_8264(void); ! 203: extern void Video_HorScroll_Write_8265(void); ! 204: extern void Video_HorScroll_Write(void); ! 205: extern void Video_TTShiftMode_WriteWord(void); ! 206: extern void Video_TTColorRegs_WriteWord(void); ! 207: extern void Video_TTColorSTRegs_WriteWord(void); ! 208: ! 209: #endif /* HATARI_VIDEO_H */
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