Raimon @ quifisraimon
61d8b0a808
- [NEW] [tia] áudio en el seu propi mòdul, pa no tornar-se loco - [NEW] Afegides frequències de rellotge per a NTSC, PAL, SECAM i PAL-M - [NEW] Mòdul Speaker conectat a tia-audio
282 lines
11 KiB
C++
282 lines
11 KiB
C++
#include "tia.h"
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#include "tia-audio.h"
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namespace tia
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{
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// Standard Stella NTSC Palette (ARGB format: 0xFFRRGGBB)
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// Indexed by: (COLUx >> 1) & 0x7F
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const uint32_t NTSC_PALETTE[128] = {
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// Hue $0 (Grayscale / Monochromatic)
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0xFF000000, 0xFF282828, 0xFF444444, 0xFF5C5C5C, 0xFF707070, 0xFF848484, 0xFF989898, 0xFFACACAC,
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// Hue $1 (Gold / Yellow-Orange)
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0xFF4C2C00, 0xFF684400, 0xFF845C00, 0xFF9C7400, 0xFFB48C00, 0xFFCCA414, 0xFFE4BC34, 0xFFFCD454,
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// Hue $2 (Orange / Red-Orange)
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0xFF541800, 0xFF742C00, 0xFF904400, 0xFFA85C00, 0xFFC07400, 0xFFD88C00, 0xFFF0A420, 0xFFFFBC40,
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// Hue $3 (Red-Orange)
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0xFF580C00, 0xFF781C00, 0xFF943000, 0xFFB04800, 0xFFC86000, 0xFFE07808, 0xFFF89028, 0xFFFFA848,
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// Hue $4 (Magenta / Red-Violet)
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0xFF540420, 0xFF74103C, 0xFF902058, 0xFFAC3474, 0xFFC4488C, 0xFFDC5CA8, 0xFFF474C0, 0xFFFF8CD8,
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// Hue $5 (Purple / Violet)
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0xFF440454, 0xFF601074, 0xFF7C2090, 0xFF9434AC, 0xFFAC48C4, 0xFFC45CDC, 0xFFDC74F4, 0xFFF48CFF,
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// Hue $6 (Blue-Violet / Indigo)
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0xFF2C0874, 0xFF441494, 0xFF5C24B0, 0xFF7438CC, 0xFF8C4CE4, 0xFFA460FC, 0xFFBC78FF, 0xFFD490FF,
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// Hue $7 (Blue)
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0xFF101480, 0xFF2424A0, 0xFF3C38BC, 0xFF504CD4, 0xFF6860EC, 0xFF8078FF, 0xFF9890FF, 0xFFB0A8FF,
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// Hue $8 (Blue-Cyan)
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0xFF002074, 0xFF003494, 0xFF0C48B0, 0xFF2060CC, 0xFF3474E4, 0xFF4C8CFC, 0xFF64A4FF, 0xFF7CBCFF,
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// Hue $9 (Cyan / Blue-Green)
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0xFF002854, 0xFF004074, 0xFF005490, 0xFF006CAC, 0xFF1880C4, 0xFF3098DC, 0xFF48B0F4, 0xFF60C8FF,
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// Hue $A (Teal / Green-Cyan)
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0xFF00302C, 0xFF004844, 0xFF00605C, 0xFF007874, 0xFF00908C, 0xFF1CA8A4, 0xFF38C0BC, 0xFF54D8D4,
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// Hue $B (Green)
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0xFF003408, 0xFF004C18, 0xFF00642C, 0xFF007C40, 0xFF009454, 0xFF14AC6C, 0xFF30C484, 0xFF4CDC9C,
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// Hue $C (Yellow-Green)
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0xFF0C3400, 0xFF204C00, 0xFF346400, 0xFF487C00, 0xFF5C9400, 0xFF74AC10, 0xFF8CC428, 0xFFA4DC44,
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// Hue $D (Olive Green)
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0xFF243000, 0xFF3C4800, 0xFF546000, 0xFF6C7800, 0xFF849000, 0xFF9CA800, 0xFFB4C018, 0xFFCCC434,
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// Hue $E (Brown / Olive-Yellow)
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0xFF3C2C00, 0xFF584000, 0xFF745800, 0xFF8C6C00, 0xFFA48400, 0xFFBC9C00, 0xFFD4B420, 0xFFECC83C,
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// Hue $F (Orange-Brown)
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0xFF482400, 0xFF643800, 0xFF805000, 0xFF986400, 0xFFB07C00, 0xFFC89400, 0xFFE0AC28, 0xFFF8C444
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};
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uint8_t collisions[8] { 0, 0, 0, 0, 0, 0, 0, 0 };
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float paddle_pos[4] { 0.5f, 0.5f, 0.5f, 0.5f };
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uint32_t paddle_charge_cycles[4] { 0, 0, 0, 0 };
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bool joy0_button_pressed = false;
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bool joy1_button_pressed = false;
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uint8_t player0_size = 1;
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uint8_t player0_num_copies = 1;
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uint8_t player0_copies_distance = 0;
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uint32_t player0_color = 0x00000000;
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bool player0_reflect = false;
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uint8_t player0_pos = 0;
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uint8_t player0_bits = 0;
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uint8_t player1_size = 1;
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uint8_t player1_num_copies = 1;
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uint8_t player1_copies_distance = 0;
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uint32_t player1_color = 0x00000000;
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bool player1_reflect = false;
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uint8_t player1_pos = 0;
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uint8_t player1_bits = 0;
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bool missile0_enabled = false;
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uint8_t missile0_size = 1;
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uint8_t missile0_pos = 0;
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bool missile1_enabled = false;
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uint8_t missile1_size = 1;
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uint8_t missile1_pos = 0;
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uint32_t playfield_color = 0x00000000;
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bool playfield_reflected = false;
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bool playfield_score = false;
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bool playfield_priority = false;
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uint32_t playfield_bits = 0x00000000;
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uint8_t playfield_shifts[2][40] = {
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// Repeat
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{16,17,18,19, 15,14,13,12,11,10,9,8, 0,1,2,3,4,5,6,7, 16,17,18,19, 15,14,13,12,11,10,9,8, 0,1,2,3,4,5,6,7},
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// Reflect
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{16,17,18,19, 15,14,13,12,11,10,9,8, 0,1,2,3,4,5,6,7, 7,6,5,4,3,2,1,0, 8,9,10,11,12,13,14,15, 19,18,17,16}
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};
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bool ball_enabled = false;
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uint8_t ball_size = 1;
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uint8_t ball_pos = 0;
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uint32_t background_color = 0x00000000;
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uint32_t current_frame_cycles = 0;
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bool vsync_set = false;
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bool vblank_set = false;
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bool vblank_latch = false;
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bool vblank_dump = false;
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uint16_t color_clock = 0;
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uint16_t current_scanline = 0;
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bool rdy_low = false;
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void reset()
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{
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}
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void tick()
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{
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if (!vblank_dump) current_frame_cycles++;
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color_clock = (color_clock + 1) % 228;
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if (color_clock == 0) {
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rdy_low = false;
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current_scanline++;
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}
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audio::tick();
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// [TODO] Pintar pixels
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}
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uint8_t get_paddle_state(int index)
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{
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if (vblank_dump) return 0x00;
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return (current_frame_cycles >= paddle_charge_cycles[index]) ? 0x80 : 0x00;
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}
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uint8_t read(uint16_t address)
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{
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switch (address & 0x0f) {
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case 0x00: return collisions[0];
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case 0x01: return collisions[2];
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case 0x02: return collisions[3];
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case 0x03: return collisions[4];
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case 0x04: return collisions[5];
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case 0x05: return collisions[6];
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case 0x06: return collisions[7];
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case 0x07: return collisions[8];
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case 0x08: return get_paddle_state(0);
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case 0x09: return get_paddle_state(1);
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case 0x0A: return get_paddle_state(2);
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case 0x0B: return get_paddle_state(3);
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case 0x0C: return joy0_button_pressed ? 0x00 : 0x80;
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case 0x0D: return joy1_button_pressed ? 0x00 : 0x80;
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}
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}
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void write(uint16_t address, uint8_t value)
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{
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address &= 0x3f;
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if (address >= 0x2d) address -= 0x20;
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// [TODO] Procesar segons l'adreça resultant
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switch (address) {
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case 0x00: // VSYNC
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vsync_set = value & 0x20;
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break;
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case 0x01: // VBLANK
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bool prev_dump = vblank_dump;
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vblank_set = value & 0x20;
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vblank_latch = value & 0x40;
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vblank_dump = value & 0x80;
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if (prev_dump && !vblank_dump) {
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current_frame_cycles = 0;
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for (int i = 0; i < 4; ++i) paddle_charge_cycles[i] = static_cast<uint32_t>(paddle_pos[i] * 2400.0f);
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}
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break;
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case 0x02: // WSYNC
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rdy_low = true;
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break;
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case 0x03: // RSYNC
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color_clock = 0;
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rdy_low = false;
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break;
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case 0x004: // NUSIZ0
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missile0_size = 1 << ((value >> 4) & 0x03);
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switch (value & 0x07) {
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case 0: player0_num_copies = 1; player0_copies_distance = 0; player0_size = 1; break;
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case 1: player0_num_copies = 2; player0_copies_distance = 2; player0_size = 1; break;
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case 2: player0_num_copies = 2; player0_copies_distance = 4; player0_size = 1; break;
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case 3: player0_num_copies = 3; player0_copies_distance = 2; player0_size = 1; break;
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case 4: player0_num_copies = 2; player0_copies_distance = 8; player0_size = 1; break;
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case 5: player0_num_copies = 1; player0_copies_distance = 0; player0_size = 2; break;
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case 6: player0_num_copies = 3; player0_copies_distance = 4; player0_size = 1; break;
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case 7: player0_num_copies = 1; player0_copies_distance = 0; player0_size = 4; break;
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}
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break;
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case 0x005: // NUSIZ1
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missile1_size = 1 << ((value >> 4) & 0x03);
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switch (value & 0x07) {
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case 0: player1_num_copies = 1; player1_copies_distance = 0; player1_size = 1; break;
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case 1: player1_num_copies = 2; player1_copies_distance = 2; player1_size = 1; break;
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case 2: player1_num_copies = 2; player1_copies_distance = 4; player1_size = 1; break;
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case 3: player1_num_copies = 3; player1_copies_distance = 2; player1_size = 1; break;
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case 4: player1_num_copies = 2; player1_copies_distance = 8; player1_size = 1; break;
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case 5: player1_num_copies = 1; player1_copies_distance = 0; player1_size = 2; break;
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case 6: player1_num_copies = 3; player1_copies_distance = 4; player1_size = 1; break;
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case 7: player1_num_copies = 1; player1_copies_distance = 0; player1_size = 4; break;
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}
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break;
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case 0x06: // COLUP0
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player0_color = NTSC_PALETTE[(value >> 1) & 0x7F]; break;
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case 0x07: // COLUP1
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player1_color = NTSC_PALETTE[(value >> 1) & 0x7F]; break;
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case 0x08: // COLUPF
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playfield_color = NTSC_PALETTE[(value >> 1) & 0x7F]; break;
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case 0x09: // COLUBK
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background_color = NTSC_PALETTE[(value >> 1) & 0x7F]; break;
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case 0x0A: // CTRLPF
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playfield_reflected = value & 0x01;
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playfield_score = value & 0x02;
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playfield_priority = value & 0x04;
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ball_size = 1 << ((value >> 4) & 0x03);
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break;
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case 0x0B: // REFP0
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player0_reflect = value & 0x08; break;
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case 0x0C: // REFP1
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player1_reflect = value & 0x08; break;
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case 0x0D: // PF0
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playfield_bits = (playfield_bits & 0x0000ffff) | (uint32_t(value>>4)<<16); break;
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case 0x0E: // PF1
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playfield_bits = (playfield_bits & 0x000f00ff) | (uint32_t(value)<<8); break;
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case 0x0F: // PF2
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playfield_bits = (playfield_bits & 0x000fff00) | (uint32_t(value)); break;
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case 0x10: // RESP0
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player0_pos = color_clock < 68 ? 0 : color_clock; break;
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case 0x11: // RESP1
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player1_pos = color_clock < 68 ? 0 : color_clock; break;
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case 0x12: // RESM0
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missile0_pos = color_clock < 68 ? 0 : color_clock; break;
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case 0x13: // RESM1
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missile1_pos = color_clock < 68 ? 0 : color_clock; break;
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case 0x14: // RESBL
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ball_pos = color_clock < 68 ? 0 : color_clock; break;
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case 0x15: // AUDC0
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case 0x16: // AUDC1
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case 0x17: // AUDF0
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case 0x18: // AUDF1
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case 0x19: // AUDV0
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case 0x1A: // AUDV1
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audio::write(address, value);
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break;
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case 0x1B: //GRP0
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player0_bits = value; break;
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case 0x1C: //GRP1
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player1_bits = value; break;
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case 0x1D: //ENAM0
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missile0_enabled = value & 0x02; break;
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case 0x1E: //ENAM1
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missile0_enabled = value & 0x02; break;
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case 0x1F: //ENABL
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missile0_enabled = value & 0x02; break;
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}
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}
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bool is_rdy_low()
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{
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return rdy_low;
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}
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}
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