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1.1 root 1: /*
1.1.1.4 root 2: Hatari - video.h
3:
1.1.1.16 root 4: This file is distributed under the GNU General Public License, version 2
5: or at your option any later version. Read the file gpl.txt for details.
1.1 root 6: */
7:
1.1.1.4 root 8: #ifndef HATARI_VIDEO_H
9: #define HATARI_VIDEO_H
10:
1.1.1.7 root 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:
1.1.1.19! root 34: #define VIDEO_50HZ 50
! 35: #define VIDEO_60HZ 60
! 36: #define VIDEO_71HZ 71
! 37:
1.1.1.7 root 38: /* Scan lines per frame */
39: #define SCANLINES_PER_FRAME_50HZ 313 /* Number of scan lines per frame in 50 Hz */
40: #define SCANLINES_PER_FRAME_60HZ 263 /* Number of scan lines per frame in 60 Hz */
1.1.1.8 root 41: #define SCANLINES_PER_FRAME_71HZ 501 /* could also be 500 ? */
1.1.1.12 root 42: #define MAX_SCANLINES_PER_FRAME SCANLINES_PER_FRAME_71HZ /* Max. number of scan lines per frame */
1.1.1.7 root 43:
44: /* Cycles per line */
45: #define CYCLES_PER_LINE_50HZ 512
46: #define CYCLES_PER_LINE_60HZ 508
1.1.1.8 root 47: #define CYCLES_PER_LINE_71HZ 224
1.1.1.7 root 48:
49: /* Vertical border/display enable/disable:
50: * Normal screen starts 63 lines in, top border is 29 lines */
1.1.1.10 root 51: #define VIDEO_START_HBL_50HZ 63 /* Usually the first line of the displayed screen in 50 Hz */
52: #define VIDEO_START_HBL_60HZ 34 /* The first line of the displayed screen in 60 Hz */
53: #define VIDEO_START_HBL_71HZ 34 /* FIXME: 34 is not verified */
54: #define FIRST_VISIBLE_HBL_50HZ 34 /* At this line we start rendering our screen in 50 Hz */
55: #define FIRST_VISIBLE_HBL_60HZ (34-29) /* At this line we start rendering our screen in 60 Hz (29 = 63-34) */
56: #define FIRST_VISIBLE_HBL_71HZ 34 /* FIXME: 34 is not verified */
1.1.1.7 root 57:
1.1.1.10 root 58: #define VIDEO_HEIGHT_HBL_COLOR 200 /* This is usually the height of the screen */
59: #define VIDEO_HEIGHT_HBL_MONO 400
1.1.1.8 root 60:
1.1.1.10 root 61: #define VIDEO_HEIGHT_BOTTOM_50HZ 47 /* number of lines in a 50 Hz bottom border */
62: #define VIDEO_HEIGHT_BOTTOM_60HZ 29 /* number of lines in a 60 Hz bottom border */
1.1.1.7 root 63:
1.1.1.10 root 64: #define VIDEO_END_HBL_50HZ ( VIDEO_START_HBL_50HZ + VIDEO_HEIGHT_HBL_COLOR ) /* 263 */
65: #define VIDEO_END_HBL_60HZ ( VIDEO_START_HBL_60HZ + VIDEO_HEIGHT_HBL_COLOR ) /* 234 */
1.1.1.19! root 66: #define VIDEO_END_HBL_71HZ ( VIDEO_START_HBL_71HZ + VIDEO_HEIGHT_HBL_MONO ) /* 434 */
1.1.1.8 root 67:
1.1.1.9 root 68: #define LINE_REMOVE_TOP_CYCLE_STF 504 /* switch to 60 Hz on line 33 should not occur after cycle 504 to remove top border */
69: /* switch to 50 Hz should occur after cycle 504 on line 33 */
70: #define LINE_REMOVE_BOTTOM_CYCLE_STF 504 /* same value than top border, but on line 262 (50 Hz) or 233 (60 Hz) */
71:
1.1.1.10 root 72: #define LINE_REMOVE_TOP_CYCLE_STE 500 /* on STE, switch can occur 4 cycles earlier than STF */
1.1.1.9 root 73: #define LINE_REMOVE_BOTTOM_CYCLE_STE 500
1.1.1.8 root 74:
75:
1.1.1.19! root 76: /* Values for VerticalOverscan */
! 77: #define V_OVERSCAN_NONE 0x00
! 78: #define V_OVERSCAN_NO_TOP 0x01
! 79: #define V_OVERSCAN_NO_BOTTOM_50 0x02
! 80: #define V_OVERSCAN_NO_BOTTOM_60 0x04
! 81: #define V_OVERSCAN_BOTTOM_SHORT_50 0x08
! 82: #define V_OVERSCAN_NO_DE 0x10
! 83:
! 84:
1.1.1.8 root 85: #define LINE_START_CYCLE_50 56
86: #define LINE_START_CYCLE_60 52
1.1.1.12 root 87: #define LINE_START_CYCLE_71 0
1.1.1.10 root 88: #define LINE_END_CYCLE_50 376 /* LINE_START_CYCLE_50 + 320 */
89: #define LINE_END_CYCLE_60 372 /* LINE_START_CYCLE_60 + 320 */
1.1.1.12 root 90: #define LINE_END_CYCLE_71 160
91: #define LINE_END_CYCLE_NO_RIGHT 460 /* 372 + 44*2 */
1.1.1.13 root 92: #define LINE_END_CYCLE_50_2 (LINE_END_CYCLE_50+44*2) /* 464, used in enchanted lands */
1.1.1.8 root 93: #define LINE_END_CYCLE_FULL 512 /* used in enchanted lands */
1.1.1.19! root 94: #define LINE_LEFT_STAB_LOW 16 /* remove left + med res stab using hi/med/lo switches */
1.1.1.8 root 95: #define LINE_SCROLL_13_CYCLE_50 20 /* 13 pixels right "hardware" scrolling */
96: #define LINE_SCROLL_9_CYCLE_50 24 /* 9 pixels right "hardware" scrolling */
97: #define LINE_SCROLL_5_CYCLE_50 28 /* 5 pixels right "hardware" scrolling */
98: #define LINE_SCROLL_1_CYCLE_50 32 /* 1 pixels right "hardware" scrolling */
1.1.1.12 root 99: #define LINE_LEFT_MED_CYCLE_1 20 /* med res overscan, shifts display by 0 byte */
100: #define LINE_LEFT_MED_CYCLE_2 28 /* med res overscan, shifts display by 2 bytes */
101: #define LINE_EMPTY_CYCLE_71_STF 28 /* on STF switch to hi/lo will create an empty line */
102: #define LINE_EMPTY_CYCLE_71_STE (28+4) /* on STE switch to hi/lo will create an empty line */
1.1.1.7 root 103:
104: /* Bytes for opened left and right border: */
1.1.1.8 root 105: #define BORDERBYTES_NORMAL 160 /* size of a "normal" line */
106: #define BORDERBYTES_LEFT 26
1.1.1.13 root 107: #define BORDERBYTES_LEFT_2_STE 20
1.1.1.8 root 108: #define BORDERBYTES_RIGHT 44
109: #define BORDERBYTES_RIGHT_FULL 22
1.1.1.7 root 110:
111:
112:
1.1.1.11 root 113: #define VBL_VIDEO_CYCLE_OFFSET_STF 64 /* value of cycle counter when VBL signal is sent */
1.1.1.10 root 114: #define VBL_VIDEO_CYCLE_OFFSET_STE (64+4) /* 4 cycles difference on STE */
115:
1.1.1.11 root 116: #define HBL_VIDEO_CYCLE_OFFSET 0 /* cycles after end of current line (ie on every 512 cycles in 50 Hz) */
1.1.1.16 root 117: #define TIMERB_VIDEO_CYCLE_OFFSET 24 /* cycles after last displayed pixels : 376+24 in 50 Hz or 372+24 in 60 Hz */
1.1.1.10 root 118:
1.1.1.19! root 119: /* This is when ff8205/07/09 are reloaded with the content of ff8201/03 : on line 310 cycle 48/52 in 50 Hz and on line 260 cycle 48/52 in 60 Hz */
! 120: /* (values were measured on real STF/STE) */
! 121: #define RESTART_VIDEO_COUNTER_LINE_50HZ ( SCANLINES_PER_FRAME_50HZ-3 )
! 122: #define RESTART_VIDEO_COUNTER_LINE_60HZ ( SCANLINES_PER_FRAME_60HZ-3 )
! 123: #define RESTART_VIDEO_COUNTER_CYCLE_STF ( 48 )
! 124: #define RESTART_VIDEO_COUNTER_CYCLE_STE ( 48 + 4 ) /* 4 cycles later than STF */
1.1.1.8 root 125:
1.1.1.10 root 126: /* anything above 4 uses automatic frameskip */
127: #define AUTO_FRAMESKIP_LIMIT 5
1.1.1.8 root 128:
129: extern int STRes;
130: extern int TTRes;
1.1.1.10 root 131: extern int nFrameSkips;
132: extern bool bUseHighRes;
1.1.1.8 root 133: extern int nVBLs;
134: extern int nHBL;
135: extern int nStartHBL;
1.1.1.10 root 136: extern int nEndHBL;
1.1.1.19! root 137: extern int VerticalOverscan;
1.1.1.14 root 138: extern Uint16 HBLPalettes[HBL_PALETTE_LINES];
1.1.1.5 root 139: extern Uint16 *pHBLPalettes;
1.1.1.14 root 140: extern Uint32 HBLPaletteMasks[HBL_PALETTE_MASKS];
1.1.1.6 root 141: extern Uint32 *pHBLPaletteMasks;
1.1.1.5 root 142: extern Uint32 VideoBase;
1.1.1.3 root 143: extern int nScreenRefreshRate;
1.1 root 144:
1.1.1.7 root 145: extern int nScanlinesPerFrame;
146: extern int nCyclesPerLine;
1.1.1.19! root 147: extern int TTSpecialVideoMode;
! 148: extern int LineTimerBPos;
1.1.1.12 root 149: extern int TimerBEventCountCycleStart;
150:
1.1.1.15 root 151: #define HBL_JITTER_ARRAY_SIZE 5
1.1.1.11 root 152: extern int HblJitterIndex;
1.1.1.15 root 153: extern const int HblJitterArray[HBL_JITTER_ARRAY_SIZE];
154: extern const int HblJitterArrayPending[HBL_JITTER_ARRAY_SIZE];
155: #define VBL_JITTER_ARRAY_SIZE 5
1.1.1.11 root 156: extern int VblJitterIndex;
1.1.1.15 root 157: extern const int VblJitterArray[VBL_JITTER_ARRAY_SIZE];
158: extern const int VblJitterArrayPending[VBL_JITTER_ARRAY_SIZE];
1.1.1.11 root 159:
1.1.1.7 root 160:
1.1.1.12 root 161: /*--------------------------------------------------------------*/
162: /* Functions prototypes */
163: /*--------------------------------------------------------------*/
164:
165: extern void Video_MemorySnapShot_Capture(bool bSave);
166:
167: extern void Video_Reset(void);
168: extern void Video_Reset_Glue(void);
169:
1.1.1.19! root 170: extern void Video_InitTimings(void);
! 171: extern void Video_SetTimings( MACHINETYPE MachineType , VIDEOTIMINGMODE Mode );
! 172: extern const char* Video_GetTimings_Name ( void );
! 173:
1.1.1.12 root 174: extern void Video_ConvertPosition( int FrameCycles , int *pHBL , int *pLineCycles );
175: extern void Video_GetPosition( int *pFrameCycles , int *pHBL , int *pLineCycles );
176: extern void Video_GetPosition_OnWriteAccess( int *pFrameCycles , int *pHBL , int *pLineCycles );
177: extern void Video_GetPosition_OnReadAccess( int *pFrameCycles , int *pHBL , int *pLineCycles );
178:
179: extern void Video_Sync_WriteByte(void);
180:
181: extern int Video_TimerB_GetPos( int LineNumber );
182:
183: extern void Video_InterruptHandler_HBL(void);
184: extern void Video_InterruptHandler_EndLine(void);
1.1.1.4 root 185:
1.1.1.12 root 186: extern void Video_SetScreenRasters(void);
187: extern void Video_GetTTRes(int *width, int *height, int *bpp);
1.1.1.13 root 188: extern bool Video_RenderTTScreen(void);
1.1.1.12 root 189:
1.1.1.19! root 190: extern void Video_AddInterruptTimerB ( int LineVideo , int CycleVideo , int Pos );
1.1.1.12 root 191:
192: extern void Video_StartInterrupts ( int PendingCyclesOver );
193: extern void Video_InterruptHandler_VBL(void);
194:
1.1.1.19! root 195: extern void Video_ScreenBase_WriteByte(void);
1.1.1.8 root 196: extern void Video_ScreenCounter_ReadByte(void);
1.1.1.12 root 197: extern void Video_ScreenCounter_WriteByte(void);
1.1.1.5 root 198: extern void Video_Sync_ReadByte(void);
199: extern void Video_BaseLow_ReadByte(void);
200: extern void Video_LineWidth_ReadByte(void);
1.1.1.19! root 201: extern void Video_Res_ReadByte(void);
1.1.1.7 root 202: extern void Video_HorScroll_Read(void);
203: extern void Video_LineWidth_WriteByte(void);
1.1.1.5 root 204: extern void Video_Color0_WriteWord(void);
205: extern void Video_Color1_WriteWord(void);
206: extern void Video_Color2_WriteWord(void);
207: extern void Video_Color3_WriteWord(void);
208: extern void Video_Color4_WriteWord(void);
209: extern void Video_Color5_WriteWord(void);
210: extern void Video_Color6_WriteWord(void);
211: extern void Video_Color7_WriteWord(void);
212: extern void Video_Color8_WriteWord(void);
213: extern void Video_Color9_WriteWord(void);
214: extern void Video_Color10_WriteWord(void);
215: extern void Video_Color11_WriteWord(void);
216: extern void Video_Color12_WriteWord(void);
217: extern void Video_Color13_WriteWord(void);
218: extern void Video_Color14_WriteWord(void);
219: extern void Video_Color15_WriteWord(void);
1.1.1.17 root 220: extern void Video_Color0_ReadWord(void);
221: extern void Video_Color1_ReadWord(void);
222: extern void Video_Color2_ReadWord(void);
223: extern void Video_Color3_ReadWord(void);
224: extern void Video_Color4_ReadWord(void);
225: extern void Video_Color5_ReadWord(void);
226: extern void Video_Color6_ReadWord(void);
227: extern void Video_Color7_ReadWord(void);
228: extern void Video_Color8_ReadWord(void);
229: extern void Video_Color9_ReadWord(void);
230: extern void Video_Color10_ReadWord(void);
231: extern void Video_Color11_ReadWord(void);
232: extern void Video_Color12_ReadWord(void);
233: extern void Video_Color13_ReadWord(void);
234: extern void Video_Color14_ReadWord(void);
235: extern void Video_Color15_ReadWord(void);
1.1.1.19! root 236: extern void Video_Res_WriteByte(void);
! 237: extern void Video_HorScroll_Read_8264(void);
! 238: extern void Video_HorScroll_Read_8265(void);
1.1.1.10 root 239: extern void Video_HorScroll_Write_8264(void);
240: extern void Video_HorScroll_Write_8265(void);
1.1.1.7 root 241: extern void Video_HorScroll_Write(void);
1.1.1.8 root 242: extern void Video_TTShiftMode_WriteWord(void);
1.1.1.19! root 243: extern void Video_TTColorRegs_Write(void);
! 244: extern void Video_TTColorRegs_STRegWrite(void);
1.1.1.5 root 245:
1.1.1.18 root 246: extern void Video_Info(FILE *fp, Uint32 dummy);
1.1.1.17 root 247:
1.1.1.4 root 248: #endif /* HATARI_VIDEO_H */
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