/* AppleWin : An Apple //e emulator for Windows Copyright (C) 2010-2011, William S Simms Copyright (C) 2014-2016, Michael Pohoreski, Tom Charlesworth AppleWin is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. AppleWin is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with AppleWin; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ // Includes #include "StdAfx.h" #include "AppleWin.h" #include "CPU.h" #include "Frame.h" // FRAMEBUFFER_W FRAMEBUFFER_H #include "Memory.h" // MemGetMainPtr() MemGetBankPtr() #include "Video.h" // g_pFramebufferbits #include "NTSC.h" #include "NTSC_CharSet.h" #define NTSC_REMOVE_WHITE_RINGING 1 // 0 = theoritical dimmed white has chroma, 1 = pure white without chroma tinting #define NTSC_REMOVE_BLACK_GHOSTING 1 // 1 = remove black smear/smudges carrying over #define NTSC_REMOVE_GRAY_CHROMA 1 // 1 = remove all chroma in gray1 and gray2 #define DEBUG_PHASE_ZERO 0 #define ALT_TABLE 0 #if ALT_TABLE #include "ntsc_rgb.h" #endif //LPBYTE MemGetMainPtr(const WORD); //LPBYTE MemGetBankPtr(const UINT nBank); // Defines #define HGR_TEST_PATTERN 0 #ifdef _MSC_VER #define INLINE __forceinline #else #define INLINE inline #endif #define PI 3.1415926535898f #define DEG_TO_RAD(x) (PI*(x)/180.f) // 2PI=360, PI=180,PI/2=90,PI/4=45 #define RAD_45 PI*0.25f #define RAD_90 PI*0.5f #define RAD_360 PI*2.f // sadly float64 precision is needed #define real double //#define CYCLESTART (PI/4.f) // PI/4 = 45 degrees #define CYCLESTART (DEG_TO_RAD(45)) // Types struct ColorSpace_PAL_t // Phase Amplitute Luma { float phase; float amp; float luma; }; struct ColorSpace_YIQ_t { float y, i, q; }; struct rgba_t { uint8_t r; uint8_t g; uint8_t b; uint8_t a; }; struct abgr_t { uint8_t a; uint8_t b; uint8_t g; uint8_t r; }; struct ColorSpace_BGRA_t { union { uint32_t n; bgra_t bgra; rgba_t rgba; abgr_t abgr; }; }; // Globals (Public) ___________________________________________________ uint16_t g_nVideoClockVert = 0; // 9-bit: VC VB VA V5 V4 V3 V2 V1 V0 = 0 .. 262 uint16_t g_nVideoClockHorz = 0; // 6-bit: H5 H4 H3 H2 H1 H0 = 0 .. 64, 25 >= visible (NB. final hpos is 2 cycles long, so a line is 65 cycles) // Globals (Private) __________________________________________________ static int g_nVideoCharSet = 0; static int g_nVideoMixed = 0; static int g_nHiresPage = 1; static int g_nTextPage = 1; // Understanding the Apple II, Timing Generation and the Video Scanner, Pg 3-11 // Vertical Scanning // Horizontal Scanning // "There are exactly 17030 (65 x 262) 6502 cycles in every television scan of an American Apple." #define VIDEO_SCANNER_MAX_HORZ 65 // TODO: use Video.cpp: kHClocks #define VIDEO_SCANNER_MAX_VERT 262 // TODO: use Video.cpp: kNTSCScanLines #define VIDEO_SCANNER_HORZ_COLORBURST_BEG 12 #define VIDEO_SCANNER_HORZ_COLORBURST_END 16 #define VIDEO_SCANNER_HORZ_START 25 // first displayable horz scanner index #define VIDEO_SCANNER_Y_MIXED 160 // num scanlins for mixed graphics + text #define VIDEO_SCANNER_Y_DISPLAY 192 // max displayable scanlines static uint16_t g_aHorzClockMemAddress[VIDEO_SCANNER_MAX_HORZ]; static bgra_t *g_pVideoAddress = 0; static bgra_t *g_pScanLines[VIDEO_SCANNER_Y_DISPLAY*2]; // To maintain the 280x192 aspect ratio for 560px width, we double every scan line -> 560x384 static unsigned (*g_pHorzClockOffset)[VIDEO_SCANNER_MAX_HORZ] = 0; typedef void (*UpdateScreenFunc_t)(long); static UpdateScreenFunc_t g_apFuncVideoUpdateScanline[VIDEO_SCANNER_Y_DISPLAY]; static UpdateScreenFunc_t g_pFuncUpdateTextScreen = 0; // updateScreenText40; static UpdateScreenFunc_t g_pFuncUpdateGraphicsScreen = 0; // updateScreenText40; static UpdateScreenFunc_t g_pFuncModeSwitchDelayed = 0; static UpdateScreenFunc_t g_aFuncUpdateHorz [VIDEO_SCANNER_MAX_HORZ]; // ANSI STORY: DGR80/TEXT80 vert/horz scrolll switches video mode mid-scan line! static uint32_t g_aHorzClockVideoMode [VIDEO_SCANNER_MAX_HORZ]; // ANSI STORY: DGR80/TEXT80 vert/horz scrolll switches video mode mid-scan line! typedef void (*UpdatePixelFunc_t)(uint16_t); static UpdatePixelFunc_t g_pFuncUpdateBnWPixel = 0; //updatePixelBnWMonitorSingleScanline; static UpdatePixelFunc_t g_pFuncUpdateHuePixel = 0; //updatePixelHueMonitorSingleScanline; static uint8_t g_nTextFlashCounter = 0; static uint16_t g_nTextFlashMask = 0; static unsigned g_aPixelMaskGR [ 16]; static uint16_t g_aPixelDoubleMaskHGR[128]; // hgrbits -> g_aPixelDoubleMaskHGR: 7-bit mono 280 pixels to 560 pixel doubling static int g_nLastColumnPixelNTSC; static int g_nColorBurstPixels; #define INITIAL_COLOR_PHASE 0 static int g_nColorPhaseNTSC = INITIAL_COLOR_PHASE; static int g_nSignalBitsNTSC = 0; #define NTSC_NUM_PHASES 4 #define NTSC_NUM_SEQUENCES 4096 const uint32_t ALPHA32_MASK = 0xFF000000; // Win32: aarrggbb /*extern*/ uint32_t g_nChromaSize = 0; // for NTSC_VideoGetChromaTable() static bgra_t g_aBnWMonitor [NTSC_NUM_SEQUENCES]; static bgra_t g_aHueMonitor[NTSC_NUM_PHASES][NTSC_NUM_SEQUENCES]; static bgra_t g_aBnwColorTV [NTSC_NUM_SEQUENCES]; static bgra_t g_aHueColorTV[NTSC_NUM_PHASES][NTSC_NUM_SEQUENCES]; // g_aBnWMonitor * g_nMonochromeRGB -> g_aBnWMonitorCustom // g_aBnwColorTV * g_nMonochromeRGB -> g_aBnWColorTVCustom static bgra_t g_aBnWMonitorCustom [NTSC_NUM_SEQUENCES]; static bgra_t g_aBnWColorTVCustom [NTSC_NUM_SEQUENCES]; #define CHROMA_ZEROS 2 #define CHROMA_POLES 2 #define CHROMA_GAIN 7.438011255f // Should this be 7.15909 MHz ? #define CHROMA_0 -0.7318893645f #define CHROMA_1 1.2336442711f //#define LUMGAIN 1.062635655e+01 //#define LUMCOEF1 -0.3412038399 //#define LUMCOEF2 0.9647813115 #define LUMA_ZEROS 2 #define LUMA_POLES 2 #define LUMA_GAIN 13.71331570f // Should this be 14.318180 MHz ? #define LUMA_0 -0.3961075449f #define LUMA_1 1.1044202472f #define SIGNAL_ZEROS 2 #define SIGNAL_POLES 2 #define SIGNAL_GAIN 7.614490548f // Should this be 7.15909 MHz ? #define SIGNAL_0 -0.2718798058f #define SIGNAL_1 0.7465656072f // Tables static unsigned g_aClockVertOffsetsHGR[ VIDEO_SCANNER_MAX_VERT ] = { 0x0000,0x0400,0x0800,0x0C00,0x1000,0x1400,0x1800,0x1C00,0x0080,0x0480,0x0880,0x0C80,0x1080,0x1480,0x1880,0x1C80, 0x0100,0x0500,0x0900,0x0D00,0x1100,0x1500,0x1900,0x1D00,0x0180,0x0580,0x0980,0x0D80,0x1180,0x1580,0x1980,0x1D80, 0x0200,0x0600,0x0A00,0x0E00,0x1200,0x1600,0x1A00,0x1E00,0x0280,0x0680,0x0A80,0x0E80,0x1280,0x1680,0x1A80,0x1E80, 0x0300,0x0700,0x0B00,0x0F00,0x1300,0x1700,0x1B00,0x1F00,0x0380,0x0780,0x0B80,0x0F80,0x1380,0x1780,0x1B80,0x1F80, 0x0000,0x0400,0x0800,0x0C00,0x1000,0x1400,0x1800,0x1C00,0x0080,0x0480,0x0880,0x0C80,0x1080,0x1480,0x1880,0x1C80, 0x0100,0x0500,0x0900,0x0D00,0x1100,0x1500,0x1900,0x1D00,0x0180,0x0580,0x0980,0x0D80,0x1180,0x1580,0x1980,0x1D80, 0x0200,0x0600,0x0A00,0x0E00,0x1200,0x1600,0x1A00,0x1E00,0x0280,0x0680,0x0A80,0x0E80,0x1280,0x1680,0x1A80,0x1E80, 0x0300,0x0700,0x0B00,0x0F00,0x1300,0x1700,0x1B00,0x1F00,0x0380,0x0780,0x0B80,0x0F80,0x1380,0x1780,0x1B80,0x1F80, 0x0000,0x0400,0x0800,0x0C00,0x1000,0x1400,0x1800,0x1C00,0x0080,0x0480,0x0880,0x0C80,0x1080,0x1480,0x1880,0x1C80, 0x0100,0x0500,0x0900,0x0D00,0x1100,0x1500,0x1900,0x1D00,0x0180,0x0580,0x0980,0x0D80,0x1180,0x1580,0x1980,0x1D80, 0x0200,0x0600,0x0A00,0x0E00,0x1200,0x1600,0x1A00,0x1E00,0x0280,0x0680,0x0A80,0x0E80,0x1280,0x1680,0x1A80,0x1E80, 0x0300,0x0700,0x0B00,0x0F00,0x1300,0x1700,0x1B00,0x1F00,0x0380,0x0780,0x0B80,0x0F80,0x1380,0x1780,0x1B80,0x1F80, 0x0000,0x0400,0x0800,0x0C00,0x1000,0x1400,0x1800,0x1C00,0x0080,0x0480,0x0880,0x0C80,0x1080,0x1480,0x1880,0x1C80, 0x0100,0x0500,0x0900,0x0D00,0x1100,0x1500,0x1900,0x1D00,0x0180,0x0580,0x0980,0x0D80,0x1180,0x1580,0x1980,0x1D80, 0x0200,0x0600,0x0A00,0x0E00,0x1200,0x1600,0x1A00,0x1E00,0x0280,0x0680,0x0A80,0x0E80,0x1280,0x1680,0x1A80,0x1E80, 0x0300,0x0700,0x0B00,0x0F00,0x1300,0x1700,0x1B00,0x1F00,0x0380,0x0780,0x0B80,0x0F80,0x1380,0x1780,0x1B80,0x1F80, 0x0B80,0x0F80,0x1380,0x1780,0x1B80,0x1F80 }; static unsigned g_aClockVertOffsetsTXT[33] = { 0x0000,0x0080,0x0100,0x0180,0x0200,0x0280,0x0300,0x0380, 0x0000,0x0080,0x0100,0x0180,0x0200,0x0280,0x0300,0x0380, 0x0000,0x0080,0x0100,0x0180,0x0200,0x0280,0x0300,0x0380, 0x0000,0x0080,0x0100,0x0180,0x0200,0x0280,0x0300,0x0380, 0x380 }; static unsigned APPLE_IIP_HORZ_CLOCK_OFFSET[5][VIDEO_SCANNER_MAX_HORZ] = { {0x1068,0x1068,0x1069,0x106A,0x106B,0x106C,0x106D,0x106E,0x106F, 0x1070,0x1071,0x1072,0x1073,0x1074,0x1075,0x1076,0x1077, 0x1078,0x1079,0x107A,0x107B,0x107C,0x107D,0x107E,0x107F, 0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007, 0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F, 0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017, 0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F, 0x0020,0x0021,0x0022,0x0023,0x0024,0x0025,0x0026,0x0027}, {0x1010,0x1010,0x1011,0x1012,0x1013,0x1014,0x1015,0x1016,0x1017, 0x1018,0x1019,0x101A,0x101B,0x101C,0x101D,0x101E,0x101F, 0x1020,0x1021,0x1022,0x1023,0x1024,0x1025,0x1026,0x1027, 0x0028,0x0029,0x002A,0x002B,0x002C,0x002D,0x002E,0x002F, 0x0030,0x0031,0x0032,0x0033,0x0034,0x0035,0x0036,0x0037, 0x0038,0x0039,0x003A,0x003B,0x003C,0x003D,0x003E,0x003F, 0x0040,0x0041,0x0042,0x0043,0x0044,0x0045,0x0046,0x0047, 0x0048,0x0049,0x004A,0x004B,0x004C,0x004D,0x004E,0x004F}, {0x1038,0x1038,0x1039,0x103A,0x103B,0x103C,0x103D,0x103E,0x103F, 0x1040,0x1041,0x1042,0x1043,0x1044,0x1045,0x1046,0x1047, 0x1048,0x1049,0x104A,0x104B,0x104C,0x104D,0x104E,0x104F, 0x0050,0x0051,0x0052,0x0053,0x0054,0x0055,0x0056,0x0057, 0x0058,0x0059,0x005A,0x005B,0x005C,0x005D,0x005E,0x005F, 0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067, 0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F, 0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077}, {0x1060,0x1060,0x1061,0x1062,0x1063,0x1064,0x1065,0x1066,0x1067, 0x1068,0x1069,0x106A,0x106B,0x106C,0x106D,0x106E,0x106F, 0x1070,0x1071,0x1072,0x1073,0x1074,0x1075,0x1076,0x1077, 0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F, 0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007, 0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F, 0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017, 0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F}, {0x1060,0x1060,0x1061,0x1062,0x1063,0x1064,0x1065,0x1066,0x1067, 0x1068,0x1069,0x106A,0x106B,0x106C,0x106D,0x106E,0x106F, 0x1070,0x1071,0x1072,0x1073,0x1074,0x1075,0x1076,0x1077, 0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F, 0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007, 0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F, 0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017, 0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F} }; static unsigned APPLE_IIE_HORZ_CLOCK_OFFSET[5][VIDEO_SCANNER_MAX_HORZ] = { {0x0068,0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F, // bug? 0x106F 0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077, 0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F, 0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007, 0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F, 0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017, 0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F, 0x0020,0x0021,0x0022,0x0023,0x0024,0x0025,0x0026,0x0027}, {0x0010,0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017, 0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F, 0x0020,0x0021,0x0022,0x0023,0x0024,0x0025,0x0026,0x0027, 0x0028,0x0029,0x002A,0x002B,0x002C,0x002D,0x002E,0x002F, 0x0030,0x0031,0x0032,0x0033,0x0034,0x0035,0x0036,0x0037, 0x0038,0x0039,0x003A,0x003B,0x003C,0x003D,0x003E,0x003F, 0x0040,0x0041,0x0042,0x0043,0x0044,0x0045,0x0046,0x0047, 0x0048,0x0049,0x004A,0x004B,0x004C,0x004D,0x004E,0x004F}, {0x0038,0x0038,0x0039,0x003A,0x003B,0x003C,0x003D,0x003E,0x003F, 0x0040,0x0041,0x0042,0x0043,0x0044,0x0045,0x0046,0x0047, 0x0048,0x0049,0x004A,0x004B,0x004C,0x004D,0x004E,0x004F, 0x0050,0x0051,0x0052,0x0053,0x0054,0x0055,0x0056,0x0057, 0x0058,0x0059,0x005A,0x005B,0x005C,0x005D,0x005E,0x005F, 0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067, 0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F, 0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077}, {0x0060,0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067, 0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F, 0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077, 0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F, 0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007, 0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F, 0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017, 0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F}, {0x0060,0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067, 0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F, 0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077, 0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F, 0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007, 0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F, 0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017, 0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F} }; /* http://www.kreativekorp.com/miscpages/a2info/munafo.shtml "Primary" lo-res colors Color GR Duty cycle Phase ====================================== Red COLOR=1 45 to 135 90 Dark-blue COLOR=2 315 to 45 0 Dark-green COLOR=4 225 to 315 270 Brown COLOR=8 135 to 225 180 */ ColorSpace_PAL_t aPaletteYIQ[ 16 ] = { // Lo Hi Dh { 0, 0, 0 } // 0 0 Black ,{ 90, 60, 25 } // 1 1 Red ,{ 0, 60, 25 } // 2 8 Dark Blue ,{ 45,100, 50 } // 3 2 9 Purple ,{270, 60, 25 } // 4 Dark Green ,{ 0, 0, 50 } // 5 Grey ,{315,100, 50 } // 6 Medium Blue ,{ 0, 60, 75 } // 7 Light Blue ,{180, 60, 25 } // 8 Brown ,{135,100, 50 } // 9 Orange ,{ 0, 0, 50 } // 10 ,{ 90, 60, 75 } // 11 Pink ,{225,100, 50 } // 12 Light Green ,{180, 60, 75 } // 13 Yellow ,{270, 60, 75} // 14 Aqua ,{ 0, 0,100 } // 15 White }; // purple HCOLOR=2 45 100 50 255 68 253 // orange HCOLOR=5 135 100 50 255 106 60 // green HCOLOR=1 225 100 50 20 245 60 // blue HCOLOR=6 315 100 50 20 207 253 rgba_t aPaletteRGB[ 16 ] = { { 0, 0, 0 } // 0 ,{ 227, 30, 96 } // 1 ,{ 96, 78, 189 } // 2 ,{ 255, 68, 253 } // 3 ,{ 0, 163, 96 } // 4 ,{ 156, 156, 156 } // 5 ,{ 20, 207, 253 } // 6 ,{ 208, 195, 255 } // 7 ,{ 96, 114, 3 } // 8 ,{ 255, 106, 60 } // 9 ,{ 156, 156, 156 } // 10 ,{ 255, 160, 208 } // 11 ,{ 20, 245, 60 } // 12 ,{ 208, 221, 141 } // 13 ,{ 114, 255, 208 } // 14 ,{ 255, 255, 255 } // 15 }; static csbits_t csbits; // charset, optionally followed by alt charset // Prototypes // prototype from CPU.h //unsigned char CpuRead(unsigned short addr, unsigned long uExecutedCycles); // prototypes from Memory.h //unsigned char * MemGetAuxPtr (unsigned short); //unsigned char * MemGetMainPtr (unsigned short); INLINE float clampZeroOne( const float & x ); INLINE uint8_t getCharSetBits( const int iChar ); INLINE uint16_t getLoResBits( uint8_t iByte ); INLINE uint32_t getScanlineColor( const uint16_t signal, const bgra_t *pTable ); INLINE uint32_t* getScanlineNext1Address(); INLINE uint32_t* getScanlinePrev1Address(); INLINE uint32_t* getScanlinePrev2Address(); INLINE uint32_t* getScanlineThis0Address(); INLINE void updateColorPhase(); INLINE void updateFlashRate(); INLINE void updateFramebufferColorTVSingleScanline( uint16_t signal, bgra_t *pTable ); INLINE void updateFramebufferColorTVDoubleScanline( uint16_t signal, bgra_t *pTable ); INLINE void updateFramebufferMonitorSingleScanline( uint16_t signal, bgra_t *pTable ); INLINE void updateFramebufferMonitorDoubleScanline( uint16_t signal, bgra_t *pTable ); INLINE void updatePixels( uint16_t bits ); INLINE bool updateScanLineModeSwitch( long cycles6502, UpdateScreenFunc_t self ); INLINE void updateVideoScannerHorzEOL(); INLINE void updateVideoScannerAddress(); INLINE uint16_t updateVideoScannerAddressTXT(); INLINE uint16_t updateVideoScannerAddressHGR(); static void initChromaPhaseTables(); static real initFilterChroma (real z); static real initFilterLuma0 (real z); static real initFilterLuma1 (real z); static real initFilterSignal(real z); static void initPixelDoubleMasks(void); static void updateMonochromeTables( uint16_t r, uint16_t g, uint16_t b ); static void updatePixelBnWColorTVSingleScanline( uint16_t compositeSignal ); static void updatePixelBnWColorTVDoubleScanline( uint16_t compositeSignal ); static void updatePixelBnWMonitorSingleScanline( uint16_t compositeSignal ); static void updatePixelBnWMonitorDoubleScanline( uint16_t compositeSignal ); static void updatePixelHueColorTVSingleScanline( uint16_t compositeSignal ); static void updatePixelHueColorTVDoubleScanline( uint16_t compositeSignal ); static void updatePixelHueMonitorSingleScanline( uint16_t compositeSignal ); static void updatePixelHueMonitorDoubleScanline( uint16_t compositeSignal ); static void updateScreenDoubleHires40( long cycles6502 ); static void updateScreenDoubleHires80( long cycles6502 ); static void updateScreenDoubleLores40( long cycles6502 ); static void updateScreenDoubleLores80( long cycles6502 ); static void updateScreenSingleHires40( long cycles6502 ); static void updateScreenSingleLores40( long cycles6502 ); static void updateScreenText40 ( long cycles6502 ); static void updateScreenText80 ( long cycles6502 ); //=========================================================================== static void set_csbits() { // NB. For models that don't have an alt charset then set /g_nVideoCharSet/ to zero switch ( GetApple2Type() ) { case A2TYPE_APPLE2: csbits = &csbits_a2[0]; g_nVideoCharSet = 0; break; case A2TYPE_APPLE2PLUS: csbits = &csbits_a2[0]; g_nVideoCharSet = 0; break; case A2TYPE_APPLE2E: csbits = &csbits_2e[0]; break; case A2TYPE_APPLE2EENHANCED:csbits = &csbits_enhanced2e[0]; break; case A2TYPE_PRAVETS82: csbits = &csbits_pravets82[0]; g_nVideoCharSet = 0; break; // Apple ][ clone case A2TYPE_PRAVETS8M: csbits = &csbits_pravets8M[0]; g_nVideoCharSet = 0; break; // Apple ][ clone case A2TYPE_PRAVETS8A: csbits = &csbits_pravets8C[0]; break; // Apple //e clone case A2TYPE_TK30002E: csbits = &csbits_enhanced2e[0]; break; // Enhanced Apple //e clone default: csbits = &csbits_enhanced2e[0]; break; } } //=========================================================================== inline float clampZeroOne( const float & x ) { if (x < 0.f) return 0.f; if (x > 1.f) return 1.f; /* ...... */ return x; } //=========================================================================== inline uint8_t getCharSetBits(int iChar) { return csbits[g_nVideoCharSet][iChar][g_nVideoClockVert & 7]; } //=========================================================================== inline uint16_t getLoResBits( uint8_t iByte ) { return g_aPixelMaskGR[ (iByte >> (g_nVideoClockVert & 4)) & 0xF ]; } //=========================================================================== inline uint32_t getScanlineColor( const uint16_t signal, const bgra_t *pTable ) { g_nSignalBitsNTSC = ((g_nSignalBitsNTSC << 1) | signal) & 0xFFF; // 14-bit return *(uint32_t*) &pTable[ g_nSignalBitsNTSC ]; } //=========================================================================== inline uint32_t* getScanlineNext1Address() { return (uint32_t*) (g_pVideoAddress - 1*FRAMEBUFFER_W); } //=========================================================================== inline uint32_t* getScanlinePrev1Address() { return (uint32_t*) (g_pVideoAddress + 1*FRAMEBUFFER_W); } //=========================================================================== inline uint32_t* getScanlinePrev2Address() { return (uint32_t*) (g_pVideoAddress + 2*FRAMEBUFFER_W); } //=========================================================================== inline uint32_t* getScanlineThis0Address() { return (uint32_t*) g_pVideoAddress; } //=========================================================================== inline void updateColorPhase() { g_nColorPhaseNTSC++; g_nColorPhaseNTSC &= 3; } //=========================================================================== inline void updateFlashRate() // TODO: Flash rate should be constant (regardless of CPU speed) { // BUG: In unthrottled CPU mode, flash rate should not be affected // Flash rate: // . NTSC : 60/16 ~= 4Hz // . PAL : 50/16 ~= 3Hz if ((++g_nTextFlashCounter & 0xF) == 0) g_nTextFlashMask ^= -1; // 16-bits // The old way to handle flashing was // if ((SW_TEXT || SW_MIXED) ) // && !SW_80COL) // FIX: FLASH 80-Column // g_nTextFlashMask = true; // The new way is to check the active char set, inlined: // if (0 == g_nVideoCharSet && 0x40 == (m & 0xC0)) // Flash only if mousetext not active } #if 0 #define updateFramebufferMonitorSingleScanline(signal,table) \ do { \ uint32_t *cp, *mp; \ g_nSignalBitsNTSC = ((g_nSignalBitsNTSC << 1) | signal) & 0xFFF; \ cp = (uint32_t*) &table[g_nSignalBitsNTSC]; \ *(uint32_t*)g_pVideoAddress = *cp; \ mp = (uint32_t*)(g_pVideoAddress - FRAMEBUFFER_W); \ *mp = ((*cp & 0x00fcfcfc) >> 2) | ALPHA32_MASK; \ g_pVideoAddress++; \ } while(0) // prevp is never used nor blended with! #define updateFramebufferColorTVSingleScanline(signal,table) \ do { \ uint32_t ntscp, prevp, betwp; \ uint32_t *prevlin, *between; \ g_nSignalBitsNTSC = ((g_nSignalBitsNTSC << 1) | signal) & 0xFFF; \ prevlin = (uint32_t*)(g_pVideoAddress + 2*FRAMEBUFFER_W); \ between = (uint32_t*)(g_pVideoAddress + 1*FRAMEBUFFER_W); \ ntscp = *(uint32_t*) &table[g_nSignalBitsNTSC]; /* raw current NTSC color */ \ prevp = *prevlin; \ betwp = ntscp - ((ntscp & 0x00fcfcfc) >> 2); \ *between = betwp | ALPHA32_MASK; \ *(uint32_t*)g_pVideoAddress = ntscp; \ g_pVideoAddress++; \ } while(0) #define updateFramebufferMonitorDoubleScanline(signal,table) \ do { \ uint32_t *cp, *mp; \ g_nSignalBitsNTSC = ((g_nSignalBitsNTSC << 1) | signal) & 0xFFF; \ cp = (uint32_t*) &table[g_nSignalBitsNTSC]; \ mp = (uint32_t*)(g_pVideoAddress - FRAMEBUFFER_W); \ *(uint32_t*)g_pVideoAddress = *mp = *cp; \ g_pVideoAddress++; \ } while(0) #define updateFramebufferColorTVDoubleScanline(signal,table) \ do { \ uint32_t ntscp, prevp, betwp; \ uint32_t *prevlin, *between; \ g_nSignalBitsNTSC = ((g_nSignalBitsNTSC << 1) | signal) & 0xFFF; \ prevlin = (uint32_t*)(g_pVideoAddress + 2*FRAMEBUFFER_W); \ between = (uint32_t*)(g_pVideoAddress + 1*FRAMEBUFFER_W); \ ntscp = *(uint32_t*) &table[g_nSignalBitsNTSC]; /* raw current NTSC color */ \ prevp = *prevlin; \ betwp = ((ntscp & 0x00fefefe) >> 1) + ((prevp & 0x00fefefe) >> 1); \ *between = betwp | ALPHA32_MASK; \ *(uint32_t*)g_pVideoAddress = ntscp; \ g_pVideoAddress++; \ } while(0) #else //=========================================================================== inline void updateFramebufferColorTVSingleScanline( uint16_t signal, bgra_t *pTable ) { /* */ uint32_t *pLine0Address = getScanlineThis0Address(); /* */ uint32_t *pLine1Address = getScanlinePrev1Address(); /* */ uint32_t *pLine2Address = getScanlinePrev2Address(); const uint32_t color0 = getScanlineColor( signal, pTable ); const uint32_t color2 = *pLine2Address; // const uint32_t color1 = color0 - ((color2 & 0x00fcfcfc) >> 2); // BUG? color0 - color0? not color0-color2? // TC: The above operation "color0 - ((color2 & 0x00fcfcfc) >> 2)" causes underflow, so I've recoded to clamp on underflow: uint32_t color1; { int r=(color0>>16)&0xff, g=(color0>>8)&0xff, b=color0&0xff; uint32_t color2_prime = (color2 & 0x00fcfcfc) >> 2; r -= (color2_prime>>16)&0xff; if (r<0) r=0; // clamp to 0 on underflow g -= (color2_prime>>8)&0xff; if (g<0) g=0; // clamp to 0 on underflow b -= (color2_prime)&0xff; if (b<0) b=0; // clamp to 0 on underflow color1 = (r<<16)|(g<<8)|(b); } /* */ *pLine1Address = color1 | ALPHA32_MASK; /* */ *pLine0Address = color0; /* */ g_pVideoAddress++; } //=========================================================================== inline void updateFramebufferColorTVDoubleScanline( uint16_t signal, bgra_t *pTable ) { /* */ uint32_t *pLine0Address = getScanlineThis0Address(); /* */ uint32_t *pLine1Address = getScanlinePrev1Address(); const uint32_t *pLine2Address = getScanlinePrev2Address(); const uint32_t color0 = getScanlineColor( signal, pTable ); const uint32_t color2 = *pLine2Address; const uint32_t color1 = ((color0 & 0x00fefefe) >> 1) + ((color2 & 0x00fefefe) >> 1); // 50% Blend /* */ *pLine1Address = color1 | ALPHA32_MASK; /* */ *pLine0Address = color0; /* */ g_pVideoAddress++; } //=========================================================================== inline void updateFramebufferMonitorSingleScanline( uint16_t signal, bgra_t *pTable ) { /* */ uint32_t *pLine0Address = getScanlineThis0Address(); /* */ uint32_t *pLine1Address = getScanlineNext1Address(); const uint32_t color0 = getScanlineColor( signal, pTable ); const uint32_t color1 = ((color0 & 0x00fcfcfc) >> 2); // 25% Blend (original) // const uint32_t color1 = ((color0 & 0x00fefefe) >> 1); // 50% Blend -- looks OK most of the time; Archon looks poor /* */ *pLine1Address = color1 | ALPHA32_MASK; /* */ *pLine0Address = color0; /* */ g_pVideoAddress++; } //=========================================================================== inline void updateFramebufferMonitorDoubleScanline( uint16_t signal, bgra_t *pTable ) { /* */ uint32_t *pLine0Address = getScanlineThis0Address(); /* */ uint32_t *pLine1Address = getScanlineNext1Address(); const uint32_t color0 = getScanlineColor( signal, pTable ); /* */ *pLine1Address = color0; /* */ *pLine0Address = color0; /* */ g_pVideoAddress++; } #endif //=========================================================================== inline void updatePixels( uint16_t bits ) { if (g_nColorBurstPixels < 2) { /* #1 of 7 */ g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; /* #2 of 7 */ g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; /* #3 of 7 */ g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; /* #4 of 7 */ g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; /* #5 of 7 */ g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; /* #6 of 7 */ g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; /* #7 of 7 */ g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1; g_pFuncUpdateBnWPixel(bits & 1); g_nLastColumnPixelNTSC=bits& 1 ; bits >>= 1; } else { /* #1 of 7 */ // abcd efgh ijkl mnop g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0abc defg hijk lmno g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 00ab cdef ghi jklmn /* #2 of 7 */ g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 000a bcde fghi jklm g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 abcd efgh ijkl /* #3 of 7 */ g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0abc defg hijk g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 00ab cdef ghij /* #4 of 7 */ g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 000a bcde fghi g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0000 abcd efgh /* #5 of 7 */ g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0000 0abc defg g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0000 00ab cdef /* #6 of 7 */ g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0000 000a bcde g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0000 0000 abcd /* #7 of 7 */ g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0000 0000 0abc g_pFuncUpdateHuePixel(bits & 1); g_nLastColumnPixelNTSC=bits& 1 ; bits >>= 1; // 0000 0000 0000 00ab } } //=========================================================================== inline bool updateScanLineModeSwitch( long cycles6502, UpdateScreenFunc_t self ) { bool bBail = false; if( g_aHorzClockVideoMode[ g_nVideoClockHorz ] != g_aHorzClockVideoMode[ g_nVideoClockHorz+1 ] && !g_nVideoMixed ) // !g_nVideoMixed for "Rainbow" { UpdateScreenFunc_t pFunc = g_aFuncUpdateHorz[ g_nVideoClockHorz ]; if( pFunc && pFunc != self ) { g_pFuncUpdateGraphicsScreen = pFunc; // g_pFuncUpdateTextScreen = pFunc; // No, as we can't break mixed mode for "Rainbow" pFunc( cycles6502 ); bBail = true; } } return bBail; } //=========================================================================== inline void updateVideoScannerHorzEOL() { if (VIDEO_SCANNER_MAX_HORZ == ++g_nVideoClockHorz) { if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY) { //VIDEO_DRAW_ENDLINE(); if (g_nColorBurstPixels < 2) { // NOTE: This writes out-of-bounds for a 560x384 framebuffer g_pFuncUpdateBnWPixel(0); g_pFuncUpdateBnWPixel(0); g_pFuncUpdateBnWPixel(0); g_pFuncUpdateBnWPixel(0); } else { // NOTE: This writes out-of-bounds for a 560x384 framebuffer g_pFuncUpdateHuePixel(0); g_pFuncUpdateHuePixel(0); g_pFuncUpdateHuePixel(0); g_pFuncUpdateHuePixel(g_nLastColumnPixelNTSC); // BUGFIX: ARCHON: green fringe on end of line } } g_nVideoClockHorz = 0; if (++g_nVideoClockVert == VIDEO_SCANNER_MAX_VERT) { g_nVideoClockVert = 0; updateFlashRate(); //VideoRefreshScreen(); // ContinueExecution() calls VideoRefreshScreen() every dwClksPerFrame (17030) } if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY) { updateVideoScannerAddress(); } } } //=========================================================================== inline void updateVideoScannerAddress() { g_pVideoAddress = g_nVideoClockVert poles for low pass //=========================================================================== static real initFilterChroma (real z) { static real x[CHROMA_ZEROS + 1] = {0,0,0}; static real y[CHROMA_POLES + 1] = {0,0,0}; x[0] = x[1]; x[1] = x[2]; x[2] = z / CHROMA_GAIN; y[0] = y[1]; y[1] = y[2]; y[2] = -x[0] + x[2] + (CHROMA_0*y[0]) + (CHROMA_1*y[1]); // inverted x[0] return y[2]; } // Butterworth Lowpass digital filter // Filter Order: 2 -> poles for low pass //=========================================================================== static real initFilterLuma0 (real z) { static real x[LUMA_ZEROS + 1] = { 0,0,0 }; static real y[LUMA_POLES + 1] = { 0,0,0 }; x[0] = x[1]; x[1] = x[2]; x[2] = z / LUMA_GAIN; y[0] = y[1]; y[1] = y[2]; y[2] = x[0] + x[2] + (2.f*x[1]) + (LUMA_0*y[0]) + (LUMA_1*y[1]); return y[2]; } // Butterworth Lowpass digital filter // Filter Order: 2 -> poles for low pass //=========================================================================== static real initFilterLuma1 (real z) { static real x[LUMA_ZEROS + 1] = { 0,0,0}; static real y[LUMA_POLES + 1] = { 0,0,0}; x[0] = x[1]; x[1] = x[2]; x[2] = z / LUMA_GAIN; y[0] = y[1]; y[1] = y[2]; y[2] = x[0] + x[2] + (2.f*x[1]) + (LUMA_0*y[0]) + (LUMA_1*y[1]); return y[2]; } // Butterworth Lowpass digital filter // Filter Order: 2 -> poles for low pass //=========================================================================== static real initFilterSignal (real z) { static real x[SIGNAL_ZEROS + 1] = { 0,0,0 }; static real y[SIGNAL_POLES + 1] = { 0,0,0 }; x[0] = x[1]; x[1] = x[2]; x[2] = z / SIGNAL_GAIN; y[0] = y[1]; y[1] = y[2]; y[2] = x[0] + x[2] + (2.f*x[1]) + (SIGNAL_0*y[0]) + (SIGNAL_1*y[1]); return y[2]; } //=========================================================================== static void initPixelDoubleMasks (void) { /* Convert 7-bit monochrome luminance to 14-bit double pixel luminance Chroma will be applied later based on the color phase in updatePixelHueMonitorDoubleScanline( luminanceBit ) 0x001 -> 0x0003 0x002 -> 0x000C 0x004 -> 0x0030 0x008 -> 0x00C0 : -> : 0x100 -> 0x4000 */ for (uint8_t byte = 0; byte < 0x80; byte++ ) // Optimization: hgrbits second 128 entries are mirror of first 128 for (uint8_t bits = 0; bits < 7; bits++ ) // high bit = half pixel shift; pre-optimization: bits < 8 if (byte & (1 << bits)) // pow2 mask g_aPixelDoubleMaskHGR[byte] |= 3 << (bits*2); for ( uint16_t color = 0; color < 16; color++ ) g_aPixelMaskGR[ color ] = (color << 12) | (color << 8) | (color << 4) | (color << 0); } //=========================================================================== void updateMonochromeTables( uint16_t r, uint16_t g, uint16_t b ) { for( int iSample = 0; iSample < NTSC_NUM_SEQUENCES; iSample++ ) { g_aBnWMonitorCustom[ iSample ].b = (g_aBnWMonitor[ iSample ].b * b) >> 8; g_aBnWMonitorCustom[ iSample ].g = (g_aBnWMonitor[ iSample ].g * g) >> 8; g_aBnWMonitorCustom[ iSample ].r = (g_aBnWMonitor[ iSample ].r * r) >> 8; g_aBnWMonitorCustom[ iSample ].a = 0xFF; g_aBnWColorTVCustom[ iSample ].b = (g_aBnwColorTV[ iSample ].b * b) >> 8; g_aBnWColorTVCustom[ iSample ].g = (g_aBnwColorTV[ iSample ].g * g) >> 8; g_aBnWColorTVCustom[ iSample ].r = (g_aBnwColorTV[ iSample ].r * r) >> 8; g_aBnWColorTVCustom[ iSample ].a = 0xFF; } } //=========================================================================== static void updatePixelBnWMonitorSingleScanline (uint16_t compositeSignal) { updateFramebufferMonitorSingleScanline(compositeSignal, g_aBnWMonitorCustom); } //=========================================================================== static void updatePixelBnWMonitorDoubleScanline (uint16_t compositeSignal) { updateFramebufferMonitorDoubleScanline(compositeSignal, g_aBnWMonitorCustom); } //=========================================================================== static void updatePixelBnWColorTVSingleScanline (uint16_t compositeSignal) { updateFramebufferColorTVSingleScanline(compositeSignal, g_aBnWColorTVCustom); } //=========================================================================== static void updatePixelBnWColorTVDoubleScanline (uint16_t compositeSignal) { updateFramebufferColorTVDoubleScanline(compositeSignal, g_aBnWColorTVCustom); } //=========================================================================== static void updatePixelHueColorTVSingleScanline (uint16_t compositeSignal) { updateFramebufferColorTVSingleScanline(compositeSignal, g_aHueColorTV[g_nColorPhaseNTSC]); updateColorPhase(); } //=========================================================================== static void updatePixelHueColorTVDoubleScanline (uint16_t compositeSignal) { updateFramebufferColorTVDoubleScanline(compositeSignal, g_aHueColorTV[g_nColorPhaseNTSC]); updateColorPhase(); } //=========================================================================== static void updatePixelHueMonitorSingleScanline (uint16_t compositeSignal) { updateFramebufferMonitorSingleScanline(compositeSignal, g_aHueMonitor[g_nColorPhaseNTSC]); updateColorPhase(); } //=========================================================================== static void updatePixelHueMonitorDoubleScanline (uint16_t compositeSignal) { updateFramebufferMonitorDoubleScanline(compositeSignal, g_aHueMonitor[g_nColorPhaseNTSC]); updateColorPhase(); } //=========================================================================== void updateScreenDoubleHires40 (long cycles6502) // wsUpdateVideoHires0 { if (g_nVideoMixed && g_nVideoClockVert >= VIDEO_SCANNER_Y_MIXED) { g_pFuncUpdateTextScreen( cycles6502 ); return; } for (; cycles6502 > 0; --cycles6502) { uint16_t addr = updateVideoScannerAddressHGR(); if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY) { if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG)) { g_nColorBurstPixels = 1024; } else if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START) { if ( updateScanLineModeSwitch( cycles6502, updateScreenDoubleHires40 ) ) return; // ANSI STORY: vide mode switch mid scan line! uint8_t *pMain = MemGetMainPtr(addr); uint8_t m = pMain[0]; uint16_t bits = g_aPixelDoubleMaskHGR[m & 0x7F]; // Optimization: hgrbits second 128 entries are mirror of first 128 updatePixels( bits ); } } updateVideoScannerHorzEOL(); } } //=========================================================================== void updateScreenDoubleHires80 (long cycles6502 ) // wsUpdateVideoDblHires { uint16_t bits; if (g_nVideoMixed && g_nVideoClockVert >= VIDEO_SCANNER_Y_MIXED) { g_pFuncUpdateTextScreen( cycles6502 ); return; } for (; cycles6502 > 0; --cycles6502) { uint16_t addr = updateVideoScannerAddressHGR(); if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY) { if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG)) { g_nColorBurstPixels = 1024; } else if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START) { if ( updateScanLineModeSwitch( cycles6502, updateScreenDoubleHires80 ) ) return; // ANSI STORY: vide mode switch mid scan line! uint8_t *pMain = MemGetMainPtr(addr); uint8_t *pAux = MemGetAuxPtr (addr); uint8_t m = pMain[0]; uint8_t a = pAux [0]; bits = ((m & 0x7f) << 7) | (a & 0x7f); bits = (bits << 1) | g_nLastColumnPixelNTSC; updatePixels( bits ); g_nLastColumnPixelNTSC = (bits >> 14) & 3; } } updateVideoScannerHorzEOL(); } } //=========================================================================== void updateScreenDoubleLores40 (long cycles6502) // wsUpdateVideo7MLores { if (g_nVideoMixed && g_nVideoClockVert >= VIDEO_SCANNER_Y_MIXED) { g_pFuncUpdateTextScreen( cycles6502 ); return; } for (; cycles6502 > 0; --cycles6502) { uint16_t addr = updateVideoScannerAddressTXT(); if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY) { if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG)) { g_nColorBurstPixels = 1024; } else if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START) { if ( updateScanLineModeSwitch( cycles6502, updateScreenDoubleLores40 ) ) return; // ANSI STORY: vide mode switch mid scan line! uint8_t *pMain = MemGetMainPtr(addr); uint8_t m = pMain[0]; uint16_t lo = getLoResBits( m ); uint16_t bits = g_aPixelDoubleMaskHGR[(0xFF & lo >> ((1 - (g_nVideoClockHorz & 1)) * 2)) & 0x7F]; // Optimization: hgrbits updatePixels( bits ); } } updateVideoScannerHorzEOL(); } } //=========================================================================== void updateScreenDoubleLores80 (long cycles6502) // wsUpdateVideoDblLores { if (g_nVideoMixed && g_nVideoClockVert >= VIDEO_SCANNER_Y_MIXED) { g_pFuncUpdateTextScreen( cycles6502 ); return; } for (; cycles6502 > 0; --cycles6502) { uint16_t addr = updateVideoScannerAddressTXT(); if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY) { if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG)) { g_nColorBurstPixels = 1024; } else if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START) { if( updateScanLineModeSwitch( cycles6502, updateScreenDoubleLores80 ) ) return; // ANSI STORY: vide mode switch mid scan line! uint8_t *pMain = MemGetMainPtr(addr); uint8_t *pAux = MemGetAuxPtr (addr); uint8_t m = pMain[0]; uint8_t a = pAux [0]; uint16_t lo = getLoResBits( m ); uint16_t hi = getLoResBits( a ); uint16_t main = lo >> (((1 - (g_nVideoClockHorz & 1)) * 2) + 3); uint16_t aux = hi >> (((1 - (g_nVideoClockHorz & 1)) * 2) + 3); uint16_t bits = (main << 7) | (aux & 0x7f); updatePixels( bits ); g_nLastColumnPixelNTSC = (bits >> 14) & 3; } } updateVideoScannerHorzEOL(); } } //=========================================================================== void updateScreenSingleHires40 (long cycles6502) { if (g_nVideoMixed && g_nVideoClockVert >= VIDEO_SCANNER_Y_MIXED) { g_pFuncUpdateTextScreen( cycles6502 ); return; } for (; cycles6502 > 0; --cycles6502) { uint16_t addr = updateVideoScannerAddressHGR(); if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY) { if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG)) { g_nColorBurstPixels = 1024; } else if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START) { if ( updateScanLineModeSwitch( cycles6502, updateScreenSingleHires40 ) ) return; // ANSI STORY: vide mode switch mid scan line! uint8_t *pMain = MemGetMainPtr(addr); uint8_t m = pMain[0]; uint16_t bits = g_aPixelDoubleMaskHGR[m & 0x7F]; // Optimization: hgrbits second 128 entries are mirror of first 128 if (m & 0x80) bits = (bits << 1) | g_nLastColumnPixelNTSC; updatePixels( bits ); } } updateVideoScannerHorzEOL(); } } //=========================================================================== void updateScreenSingleLores40 (long cycles6502) { if (g_nVideoMixed && g_nVideoClockVert >= VIDEO_SCANNER_Y_MIXED) { g_pFuncUpdateTextScreen( cycles6502 ); return; } for (; cycles6502 > 0; --cycles6502) { uint16_t addr = updateVideoScannerAddressTXT(); if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY) { if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG)) { g_nColorBurstPixels = 1024; } else if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START) { if( updateScanLineModeSwitch( cycles6502, updateScreenSingleLores40 ) ) return; // ANSI STORY: vide mode switch mid scan line! uint8_t *pMain = MemGetMainPtr(addr); uint8_t m = pMain[0]; uint16_t lo = getLoResBits( m ); uint16_t bits = lo >> ((1 - (g_nVideoClockHorz & 1)) * 2); updatePixels( bits ); } } updateVideoScannerHorzEOL(); } } //=========================================================================== void updateScreenText40 (long cycles6502) { for (; cycles6502 > 0; --cycles6502) { uint16_t addr = updateVideoScannerAddressTXT(); if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG)) { if (g_nColorBurstPixels > 0) g_nColorBurstPixels -= 1; } else if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY) { if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START) { if ( updateScanLineModeSwitch( cycles6502, updateScreenText40 ) ) return; // ANSI STORY: vide mode switch mid scan line! uint8_t *pMain = MemGetMainPtr(addr); uint8_t m = pMain[0]; uint8_t c = getCharSetBits(m); uint16_t bits = g_aPixelDoubleMaskHGR[c & 0x7F]; // Optimization: hgrbits second 128 entries are mirror of first 128 if (0 == g_nVideoCharSet && 0x40 == (m & 0xC0)) // Flash only if mousetext not active bits ^= g_nTextFlashMask; updatePixels( bits ); } } updateVideoScannerHorzEOL(); } } //=========================================================================== void updateScreenText80 (long cycles6502) { for (; cycles6502 > 0; --cycles6502) { uint16_t addr = updateVideoScannerAddressTXT(); if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG)) { if (g_nColorBurstPixels > 0) g_nColorBurstPixels -= 1; } else if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY) { if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START) { if ( updateScanLineModeSwitch( cycles6502, updateScreenText80 ) ) return; // ANSI STORY: vide mode switch mid scan line! uint8_t *pMain = MemGetMainPtr(addr); uint8_t *pAux = MemGetAuxPtr (addr); uint8_t m = pMain[0]; uint8_t a = pAux [0]; uint16_t main = getCharSetBits( m ); uint16_t aux = getCharSetBits( a ); if ((0 == g_nVideoCharSet) && 0x40 == (m & 0xC0)) // Flash only if mousetext not active main ^= g_nTextFlashMask; if ((0 == g_nVideoCharSet) && 0x40 == (a & 0xC0)) // Flash only if mousetext not active aux ^= g_nTextFlashMask; uint16_t bits = (main << 7) | aux; updatePixels( bits ); } } updateVideoScannerHorzEOL(); } } // Functions (Public) _____________________________________________________________________________ //=========================================================================== uint32_t*NTSC_VideoGetChromaTable( bool bHueTypeMonochrome, bool bMonitorTypeColorTV ) { if( bHueTypeMonochrome ) { g_nChromaSize = sizeof( g_aBnwColorTV ); if( bMonitorTypeColorTV ) return (uint32_t*) g_aBnwColorTV; else return (uint32_t*) g_aBnWMonitor; } else { g_nChromaSize = sizeof( g_aHueColorTV ); if( bMonitorTypeColorTV ) return (uint32_t*) g_aHueColorTV; else #if ALT_TABLE g_nChromaSize = sizeof(T_NTSC); return (uint32_t*)T_NTSC; #endif return (uint32_t*) g_aHueMonitor; } } //=========================================================================== uint16_t NTSC_VideoGetScannerAddress ( unsigned long cycles6502 ) { (void)cycles6502; int nHires = (g_uVideoMode & VF_HIRES) && !(g_uVideoMode & VF_TEXT); // (SW_HIRES && !SW_TEXT) ? 1 : 0; if( nHires ) updateVideoScannerAddressHGR(); else updateVideoScannerAddressTXT(); // Required for ANSI STORY vert scrolling mid-scanline mixed mode: DGR80, TEXT80, DGR80 uint8_t hclock = (g_nVideoClockHorz + VIDEO_SCANNER_MAX_HORZ - 2) % VIDEO_SCANNER_MAX_HORZ; // Optimization: (h-2) return g_aHorzClockMemAddress[ hclock ]; } //=========================================================================== void NTSC_SetVideoTextMode( int cols ) { if( cols == 40 ) g_pFuncUpdateTextScreen = updateScreenText40; else g_pFuncUpdateTextScreen = updateScreenText80; } //=========================================================================== void NTSC_SetVideoMode( int bVideoModeFlags ) { int h = g_nVideoClockHorz; g_aHorzClockVideoMode[ h ] = bVideoModeFlags; g_nVideoMixed = bVideoModeFlags & VF_MIXED; g_nVideoCharSet = VideoGetSWAltCharSet() ? 1 : 0; g_nTextPage = 1; g_nHiresPage = 1; if (bVideoModeFlags & VF_PAGE2) { // Apple IIe, Technical Notes, #3: Double High-Resolution Graphics // 80STORE must be OFF to display page 2 if (0 == (bVideoModeFlags & VF_80STORE)) { g_nTextPage = 2; g_nHiresPage = 2; } } if (bVideoModeFlags & VF_TEXT) { if (bVideoModeFlags & VF_80COL) g_pFuncUpdateGraphicsScreen = updateScreenText80; else g_pFuncUpdateGraphicsScreen = updateScreenText40; } else if (bVideoModeFlags & VF_HIRES) { if (bVideoModeFlags & VF_DHIRES) if (bVideoModeFlags & VF_80COL) g_pFuncUpdateGraphicsScreen = updateScreenDoubleHires80; else g_pFuncUpdateGraphicsScreen = updateScreenDoubleHires40; else g_pFuncUpdateGraphicsScreen = updateScreenSingleHires40; } else { if (bVideoModeFlags & VF_DHIRES) if (bVideoModeFlags & VF_80COL) g_pFuncUpdateGraphicsScreen = updateScreenDoubleLores80; else g_pFuncUpdateGraphicsScreen = updateScreenDoubleLores40; else g_pFuncUpdateGraphicsScreen = updateScreenSingleLores40; } g_aFuncUpdateHorz[ h ] = g_pFuncUpdateGraphicsScreen; // NTSC: ANSI STORY } //=========================================================================== void NTSC_SetVideoStyle() // (int v, int s) { int half = g_uHalfScanLines; uint8_t r, g, b; switch ( g_eVideoType ) { case VT_COLOR_TV: r = 0xFF; g = 0xFF; b = 0xFF; updateMonochromeTables( r, g, b ); if (half) { g_pFuncUpdateBnWPixel = updatePixelBnWColorTVSingleScanline; g_pFuncUpdateHuePixel = updatePixelHueColorTVSingleScanline; } else { g_pFuncUpdateBnWPixel = updatePixelBnWColorTVDoubleScanline; g_pFuncUpdateHuePixel = updatePixelHueColorTVDoubleScanline; } break; case VT_COLOR_MONITOR: default: r = 0xFF; g = 0xFF; b = 0xFF; updateMonochromeTables( r, g, b ); if (half) { g_pFuncUpdateBnWPixel = updatePixelBnWMonitorSingleScanline; g_pFuncUpdateHuePixel = updatePixelHueMonitorSingleScanline; } else { g_pFuncUpdateBnWPixel = updatePixelBnWMonitorDoubleScanline; g_pFuncUpdateHuePixel = updatePixelHueMonitorDoubleScanline; } break; case VT_MONO_TV: r = 0xFF; g = 0xFF; b = 0xFF; updateMonochromeTables( r, g, b ); // Custom Monochrome color if (half) { g_pFuncUpdateBnWPixel = g_pFuncUpdateHuePixel = updatePixelBnWColorTVSingleScanline; } else { g_pFuncUpdateBnWPixel = g_pFuncUpdateHuePixel = updatePixelBnWColorTVDoubleScanline; } break; // case VT_MONO_WHITE: //VT_MONO_MONITOR: //3: case VT_MONO_AMBER: r = 0xFF; g = 0x80; b = 0x00; goto _mono; case VT_MONO_GREEN: r = 0x00; g = 0xC0; b = 0x00; goto _mono; case VT_MONO_WHITE: r = 0xFF; g = 0xFF; b = 0xFF; goto _mono; case VT_MONO_CUSTOM: // From WinGDI.h // #define RGB(r,g,b) ((COLORREF)(((BYTE)(r)|((WORD)((BYTE)(g))<<8))|(((DWORD)(BYTE)(b))<<16))) //#define GetRValue(rgb) (LOBYTE(rgb)) //#define GetGValue(rgb) (LOBYTE(((WORD)(rgb)) >> 8)) //#define GetBValue(rgb) (LOBYTE((rgb)>>16)) r = (g_nMonochromeRGB >> 0) & 0xFF; g = (g_nMonochromeRGB >> 8) & 0xFF; b = (g_nMonochromeRGB >> 16) & 0xFF; _mono: updateMonochromeTables( r, g, b ); // Custom Monochrome color if (half) { g_pFuncUpdateBnWPixel = g_pFuncUpdateHuePixel = updatePixelBnWMonitorSingleScanline; } else { g_pFuncUpdateBnWPixel = g_pFuncUpdateHuePixel = updatePixelBnWMonitorDoubleScanline; } break; } } //=========================================================================== void NTSC_VideoInit( uint8_t* pFramebuffer ) // wsVideoInit { make_csbits(); initPixelDoubleMasks(); initChromaPhaseTables(); updateMonochromeTables( 0xFF, 0xFF, 0xFF ); for (int y = 0; y < (VIDEO_SCANNER_Y_DISPLAY*2); y++) g_pScanLines[y] = (bgra_t*)(g_pFramebufferbits + sizeof(bgra_t) * FRAMEBUFFER_W * ((FRAMEBUFFER_H - 1) - y - BORDER_H) + (sizeof(bgra_t) * BORDER_W)); g_pVideoAddress = g_pScanLines[0]; g_pFuncUpdateTextScreen = updateScreenText40; g_pFuncUpdateGraphicsScreen = updateScreenText40; VideoReinitialize(); // Setup g_pFunc_ntsc*Pixel() #if HGR_TEST_PATTERN // Init HGR to almost all-possible-combinations // CALL-151 // C050 C053 C057 unsigned char b = 0; unsigned char *main, *aux; uint16_t ad; for( unsigned page = 0; page < 2; page++ ) { // for( unsigned w = 0; w < 2; w++ ) // 16 cols { for( unsigned z = 0; z < 2; z++ ) // 8 cols { b = 0; // 4 columns * 64 rows for( unsigned x = 0; x < 4; x++ ) // 4 cols { for( unsigned y = 0; y < 64; y++ ) // 1 col { unsigned y2 = y*2; ad = 0x2000 + (y2&7)*0x400 + ((y2/8)&7)*0x80 + (y2/64)*0x28 + 2*x + 10*z; // + 20*w; ad += 0x2000*page; main = MemGetMainPtr(ad); aux = MemGetAuxPtr (ad); main[0] = b; main[1] = z + page*0x80; aux [0] = z; aux [1] = 0; if( page == 1 ) { // Columns = # of consecutive pixels // x = 0, 1, 2, 3 // # = 3, 5, 7, 9 // b = 3, 7, 15, 31 // = (4 << x) - 1 main[0+z] = (0x80*(y/32) + (((4 << x) - 1) << (y/8))); // (3 | 3+x*2) main[1+z] = (0x80*(y/32) + (((4 << x) - 1) << (y/8))) >> 8; } y2 = y*2 + 1; ad = 0x2000 + (y2&7)*0x400 + ((y2/8)&7)*0x80 + (y2/64)*0x28 + 2*x + 10*z; // + 20*w; ad += 0x2000*page; main = MemGetMainPtr(ad); aux = MemGetAuxPtr (ad); main[0] = 0; main[1] = z + page*0x80; aux [0] = b; aux [1] = 0; b++; } } } } } #endif } //=========================================================================== void NTSC_VideoReinitialize( DWORD cyclesThisFrame ) { _ASSERT(cyclesThisFrame < VIDEO_SCANNER_6502_CYCLES); if (cyclesThisFrame >= VIDEO_SCANNER_6502_CYCLES) cyclesThisFrame = 0; // error g_nVideoClockVert = (uint16_t) (cyclesThisFrame / VIDEO_SCANNER_MAX_HORZ); g_nVideoClockHorz = cyclesThisFrame % VIDEO_SCANNER_MAX_HORZ; updateVideoScannerAddress(); // Pre-condition: g_nVideoClockVert } //=========================================================================== void NTSC_VideoInitAppleType () { int model = GetApple2Type(); // anything other than low bit set means not II/II+ (TC: include Pravets machines too?) if (model & 0xFFFE) g_pHorzClockOffset = APPLE_IIE_HORZ_CLOCK_OFFSET; else g_pHorzClockOffset = APPLE_IIP_HORZ_CLOCK_OFFSET; set_csbits(); } //=========================================================================== void NTSC_VideoInitChroma() { initChromaPhaseTables(); } //=========================================================================== bool NTSC_VideoIsVbl () { return (g_nVideoClockVert >= VIDEO_SCANNER_Y_DISPLAY) && (g_nVideoClockVert < VIDEO_SCANNER_MAX_VERT); } //=========================================================================== // Pre: cyclesLeftToUpdate = [0...VIDEO_SCANNER_6502_CYCLES] // . 2-14: After one emulated 6502/65C02 opcode (optionally with IRQ) // . ~1000: After 1ms of Z80 emulation // . 17030: From NTSC_VideoRedrawWholeScreen() static void VideoUpdateCycles( int cyclesLeftToUpdate ) { const int cyclesToEndOfLine = VIDEO_SCANNER_MAX_HORZ - g_nVideoClockHorz; if (g_nVideoClockVert < VIDEO_SCANNER_Y_MIXED) { const int cyclesToLine160 = VIDEO_SCANNER_MAX_HORZ * (VIDEO_SCANNER_Y_MIXED - g_nVideoClockVert - 1) + cyclesToEndOfLine; int cycles = cyclesLeftToUpdate < cyclesToLine160 ? cyclesLeftToUpdate : cyclesToLine160; g_pFuncUpdateGraphicsScreen(cycles); // lines [currV...159] cyclesLeftToUpdate -= cycles; const int cyclesFromLine160ToLine261 = VIDEO_SCANNER_6502_CYCLES - (VIDEO_SCANNER_MAX_HORZ * VIDEO_SCANNER_Y_MIXED); cycles = cyclesLeftToUpdate < cyclesFromLine160ToLine261 ? cyclesLeftToUpdate : cyclesFromLine160ToLine261; g_pFuncUpdateGraphicsScreen(cycles); // lines [160..191..261] cyclesLeftToUpdate -= cycles; // Any remaining cyclesLeftToUpdate: lines [0...currV) } else { const int cyclesToLine262 = VIDEO_SCANNER_MAX_HORZ * (VIDEO_SCANNER_MAX_VERT - g_nVideoClockVert - 1) + cyclesToEndOfLine; int cycles = cyclesLeftToUpdate < cyclesToLine262 ? cyclesLeftToUpdate : cyclesToLine262; g_pFuncUpdateGraphicsScreen(cycles); // lines [currV...261] cyclesLeftToUpdate -= cycles; const int cyclesFromLine0ToLine159 = VIDEO_SCANNER_MAX_HORZ * VIDEO_SCANNER_Y_MIXED; cycles = cyclesLeftToUpdate < cyclesFromLine0ToLine159 ? cyclesLeftToUpdate : cyclesFromLine0ToLine159; g_pFuncUpdateGraphicsScreen(cycles); // lines [0..159] cyclesLeftToUpdate -= cycles; // Any remaining cyclesLeftToUpdate: lines [160...currV) } if (cyclesLeftToUpdate) g_pFuncUpdateGraphicsScreen(cyclesLeftToUpdate); } //=========================================================================== void NTSC_VideoUpdateCycles( long cycles6502 ) { _ASSERT(cycles6502 < VIDEO_SCANNER_6502_CYCLES); // Use NTSC_VideoRedrawWholeScreen() instead VideoUpdateCycles(cycles6502); } //=========================================================================== void NTSC_VideoRedrawWholeScreen( void ) { #ifdef _DEBUG const uint16_t currVideoClockVert = g_nVideoClockVert; const uint16_t currVideoClockHorz = g_nVideoClockHorz; #endif VideoUpdateCycles(VIDEO_SCANNER_6502_CYCLES); #ifdef _DEBUG _ASSERT(currVideoClockVert == g_nVideoClockVert); _ASSERT(currVideoClockHorz == g_nVideoClockHorz); #endif } //=========================================================================== bool NTSC_GetColorBurst( void ) { return (g_nColorBurstPixels < 2) ? false : true; }