#include typedef unsigned char byte; typedef unsigned short word; // PLATFORM DEFINITION __sfr __at (0x0) input0; __sfr __at (0x1) input1; __sfr __at (0x2) input2; __sfr __at (0x3) input3; __sfr __at (0x1) ay8910_reg; __sfr __at (0x2) ay8910_data; __sfr __at (0x40) palette; byte __at (0xe000) cellram[28][32]; byte __at (0xe800) tileram[256][8]; #define LEFT1 !(input1 & 0x10) #define RIGHT1 !(input1 & 0x20) #define UP1 !(input1 & 0x40) #define DOWN1 !(input1 & 0x80) #define FIRE1 !(input2 & 0x20) #define COIN1 (input3 & 0x8) #define START1 !(input2 & 0x10) #define START2 !(input3 & 0x20) #define TIMER500HZ (input2 & 0x8) // GAME CODE void main(); void gsinit(); // start routine @ 0x0 void start() { __asm LD SP,#0xE800 ; set up stack pointer DI ; disable interrupts __endasm; gsinit(); main(); } #define INIT_MAGIC 0xdeadbeef static long is_initialized = INIT_MAGIC; // set initialized portion of global memory // by copying INITIALIZER area -> INITIALIZED area void gsinit() { // already initialized? skip it if (is_initialized == INIT_MAGIC) return; __asm ; copy initialized data to RAM LD BC, #l__INITIALIZER LD A, B LD DE, #s__INITIALIZED LD HL, #s__INITIALIZER LDIR __endasm; } // SOUND CODE inline void set8910(byte reg, byte data) { ay8910_reg = reg; ay8910_data = data; } typedef enum { AY_PITCH_A_LO, AY_PITCH_A_HI, AY_PITCH_B_LO, AY_PITCH_B_HI, AY_PITCH_C_LO, AY_PITCH_C_HI, AY_NOISE_PERIOD, AY_ENABLE, AY_ENV_VOL_A, AY_ENV_VOL_B, AY_ENV_VOL_C, AY_ENV_PERI_LO, AY_ENV_PERI_HI, AY_ENV_SHAPE } AY8910Register; //////// // https://en.wikipedia.org/wiki/Linear-feedback_shift_register#Galois_LFSRs static word lfsr = 1; word rand() { unsigned lsb = lfsr & 1; /* Get LSB (i.e., the output bit). */ lfsr >>= 1; /* Shift register */ if (lsb) { /* If the output bit is 1, apply toggle mask. */ lfsr ^= 0xB400u; } return lfsr; } void delay(byte msec) { while (msec--) { while (TIMER500HZ != 0) lfsr++; while (TIMER500HZ == 0) lfsr++; } } #define LOCHAR 0x0 #define HICHAR 0xff #define CHAR(ch) (ch-LOCHAR) void clrscr() { memset(cellram, CHAR(' '), sizeof(cellram)); } byte getchar(byte x, byte y) { return cellram[x][y]; } void putchar(byte x, byte y, byte attr) { cellram[x][y] = attr; } void putstring(byte x, byte y, const char* string) { while (*string) { putchar(x++, y, CHAR(*string++)); } } // PC font (code page 437) const byte font8x8[0x100][8] = {/*{w:8,h:8,bpp:1,count:256,xform:"scaleX(-1) rotate(90deg)"}*/ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, { 0x7e,0x81,0x95,0xb1,0xb1,0x95,0x81,0x7e }, { 0x7e,0xff,0xeb,0xcf,0xcf,0xeb,0xff,0x7e }, { 0x0e,0x1f,0x3f,0x7e,0x3f,0x1f,0x0e,0x00 }, { 0x08,0x1c,0x3e,0x7f,0x3e,0x1c,0x08,0x00 }, { 0x38,0x3a,0x9f,0xff,0x9f,0x3a,0x38,0x00 }, { 0x10,0x38,0xbc,0xff,0xbc,0x38,0x10,0x00 }, { 0x00,0x00,0x18,0x3c,0x3c,0x18,0x00,0x00 }, { 0xff,0xff,0xe7,0xc3,0xc3,0xe7,0xff,0xff }, { 0x00,0x3c,0x66,0x42,0x42,0x66,0x3c,0x00 }, { 0xff,0xc3,0x99,0xbd,0xbd,0x99,0xc3,0xff }, { 0x70,0xf8,0x88,0x88,0xfd,0x7f,0x07,0x0f }, { 0x00,0x4e,0x5f,0xf1,0xf1,0x5f,0x4e,0x00 }, { 0xc0,0xe0,0xff,0x7f,0x05,0x05,0x07,0x07 }, { 0xc0,0xff,0x7f,0x05,0x05,0x65,0x7f,0x3f }, { 0x99,0x5a,0x3c,0xe7,0xe7,0x3c,0x5a,0x99 }, { 0x7f,0x3e,0x3e,0x1c,0x1c,0x08,0x08,0x00 }, { 0x08,0x08,0x1c,0x1c,0x3e,0x3e,0x7f,0x00 }, { 0x00,0x24,0x66,0xff,0xff,0x66,0x24,0x00 }, { 0x00,0x5f,0x5f,0x00,0x00,0x5f,0x5f,0x00 }, { 0x06,0x0f,0x09,0x7f,0x7f,0x01,0x7f,0x7f }, { 0xda,0xbf,0xa5,0xa5,0xfd,0x59,0x03,0x02 }, { 0x00,0x70,0x70,0x70,0x70,0x70,0x70,0x00 }, { 0x80,0x94,0xb6,0xff,0xff,0xb6,0x94,0x80 }, { 0x00,0x04,0x06,0x7f,0x7f,0x06,0x04,0x00 }, { 0x00,0x10,0x30,0x7f,0x7f,0x30,0x10,0x00 }, { 0x08,0x08,0x08,0x2a,0x3e,0x1c,0x08,0x00 }, { 0x08,0x1c,0x3e,0x2a,0x08,0x08,0x08,0x00 }, { 0x3c,0x3c,0x20,0x20,0x20,0x20,0x20,0x00 }, { 0x08,0x1c,0x3e,0x08,0x08,0x3e,0x1c,0x08 }, { 0x30,0x38,0x3c,0x3e,0x3e,0x3c,0x38,0x30 }, { 0x06,0x0e,0x1e,0x3e,0x3e,0x1e,0x0e,0x06 }, { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, { 0x00,0x06,0x5f,0x5f,0x06,0x00,0x00,0x00 }, { 0x00,0x07,0x07,0x00,0x07,0x07,0x00,0x00 }, { 0x14,0x7f,0x7f,0x14,0x7f,0x7f,0x14,0x00 }, { 0x24,0x2e,0x6b,0x6b,0x3a,0x12,0x00,0x00 }, { 0x46,0x66,0x30,0x18,0x0c,0x66,0x62,0x00 }, { 0x30,0x7a,0x4f,0x5d,0x37,0x7a,0x48,0x00 }, { 0x04,0x07,0x03,0x00,0x00,0x00,0x00,0x00 }, { 0x00,0x1c,0x3e,0x63,0x41,0x00,0x00,0x00 }, { 0x00,0x41,0x63,0x3e,0x1c,0x00,0x00,0x00 }, { 0x08,0x2a,0x3e,0x1c,0x1c,0x3e,0x2a,0x08 }, { 0x08,0x08,0x3e,0x3e,0x08,0x08,0x00,0x00 }, { 0x00,0xa0,0xe0,0x60,0x00,0x00,0x00,0x00 }, { 0x08,0x08,0x08,0x08,0x08,0x08,0x00,0x00 }, { 0x00,0x00,0x60,0x60,0x00,0x00,0x00,0x00 }, { 0x60,0x30,0x18,0x0c,0x06,0x03,0x01,0x00 }, { 0x3e,0x7f,0x59,0x4d,0x7f,0x3e,0x00,0x00 }, { 0x42,0x42,0x7f,0x7f,0x40,0x40,0x00,0x00 }, { 0x62,0x73,0x59,0x49,0x6f,0x66,0x00,0x00 }, { 0x22,0x63,0x49,0x49,0x7f,0x36,0x00,0x00 }, { 0x18,0x1c,0x16,0x13,0x7f,0x7f,0x10,0x00 }, { 0x27,0x67,0x45,0x45,0x7d,0x39,0x00,0x00 }, { 0x3c,0x7e,0x4b,0x49,0x79,0x30,0x00,0x00 }, { 0x03,0x63,0x71,0x19,0x0f,0x07,0x00,0x00 }, { 0x36,0x7f,0x49,0x49,0x7f,0x36,0x00,0x00 }, { 0x06,0x4f,0x49,0x69,0x3f,0x1e,0x00,0x00 }, { 0x00,0x00,0x6c,0x6c,0x00,0x00,0x00,0x00 }, { 0x00,0xa0,0xec,0x6c,0x00,0x00,0x00,0x00 }, { 0x08,0x1c,0x36,0x63,0x41,0x00,0x00,0x00 }, { 0x14,0x14,0x14,0x14,0x14,0x14,0x00,0x00 }, { 0x00,0x41,0x63,0x36,0x1c,0x08,0x00,0x00 }, { 0x02,0x03,0x51,0x59,0x0f,0x06,0x00,0x00 }, { 0x3e,0x7f,0x41,0x5d,0x5d,0x1f,0x1e,0x00 }, { 0x7c,0x7e,0x13,0x13,0x7e,0x7c,0x00,0x00 }, { 0x41,0x7f,0x7f,0x49,0x49,0x7f,0x36,0x00 }, { 0x1c,0x3e,0x63,0x41,0x41,0x63,0x22,0x00 }, { 0x41,0x7f,0x7f,0x41,0x63,0x7f,0x1c,0x00 }, { 0x41,0x7f,0x7f,0x49,0x5d,0x41,0x63,0x00 }, { 0x41,0x7f,0x7f,0x49,0x1d,0x01,0x03,0x00 }, { 0x1c,0x3e,0x63,0x41,0x51,0x73,0x72,0x00 }, { 0x7f,0x7f,0x08,0x08,0x7f,0x7f,0x00,0x00 }, { 0x00,0x41,0x7f,0x7f,0x41,0x00,0x00,0x00 }, { 0x30,0x70,0x40,0x41,0x7f,0x3f,0x01,0x00 }, { 0x41,0x7f,0x7f,0x08,0x1c,0x77,0x63,0x00 }, { 0x41,0x7f,0x7f,0x41,0x40,0x60,0x70,0x00 }, { 0x7f,0x7f,0x06,0x0c,0x06,0x7f,0x7f,0x00 }, { 0x7f,0x7f,0x06,0x0c,0x18,0x7f,0x7f,0x00 }, { 0x1c,0x3e,0x63,0x41,0x63,0x3e,0x1c,0x00 }, { 0x41,0x7f,0x7f,0x49,0x09,0x0f,0x06,0x00 }, { 0x1e,0x3f,0x21,0x71,0x7f,0x5e,0x00,0x00 }, { 0x41,0x7f,0x7f,0x19,0x39,0x6f,0x46,0x00 }, { 0x26,0x67,0x4d,0x59,0x7b,0x32,0x00,0x00 }, { 0x03,0x41,0x7f,0x7f,0x41,0x03,0x00,0x00 }, { 0x7f,0x7f,0x40,0x40,0x7f,0x7f,0x00,0x00 }, { 0x1f,0x3f,0x60,0x60,0x3f,0x1f,0x00,0x00 }, { 0x7f,0x7f,0x30,0x18,0x30,0x7f,0x7f,0x00 }, { 0x63,0x77,0x1c,0x08,0x1c,0x77,0x63,0x00 }, { 0x07,0x4f,0x78,0x78,0x4f,0x07,0x00,0x00 }, { 0x67,0x73,0x59,0x4d,0x47,0x63,0x71,0x00 }, { 0x00,0x7f,0x7f,0x41,0x41,0x00,0x00,0x00 }, { 0x01,0x03,0x06,0x0c,0x18,0x30,0x60,0x00 }, { 0x00,0x41,0x41,0x7f,0x7f,0x00,0x00,0x00 }, { 0x08,0x0c,0x06,0x03,0x06,0x0c,0x08,0x00 }, { 0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80 }, { 0x00,0x00,0x03,0x07,0x04,0x00,0x00,0x00 }, { 0x20,0x74,0x54,0x54,0x3c,0x78,0x40,0x00 }, { 0x41,0x3f,0x7f,0x44,0x44,0x7c,0x38,0x00 }, { 0x38,0x7c,0x44,0x44,0x6c,0x28,0x00,0x00 }, { 0x30,0x78,0x48,0x49,0x3f,0x7f,0x40,0x00 }, { 0x38,0x7c,0x54,0x54,0x5c,0x18,0x00,0x00 }, { 0x48,0x7e,0x7f,0x49,0x03,0x02,0x00,0x00 }, { 0x98,0xbc,0xa4,0xa4,0xf8,0x7c,0x04,0x00 }, { 0x41,0x7f,0x7f,0x08,0x04,0x7c,0x78,0x00 }, { 0x00,0x44,0x7d,0x7d,0x40,0x00,0x00,0x00 }, { 0x40,0xc4,0x84,0xfd,0x7d,0x00,0x00,0x00 }, { 0x41,0x7f,0x7f,0x10,0x38,0x6c,0x44,0x00 }, { 0x00,0x41,0x7f,0x7f,0x40,0x00,0x00,0x00 }, { 0x7c,0x7c,0x0c,0x18,0x0c,0x7c,0x78,0x00 }, { 0x7c,0x7c,0x04,0x04,0x7c,0x78,0x00,0x00 }, { 0x38,0x7c,0x44,0x44,0x7c,0x38,0x00,0x00 }, { 0x84,0xfc,0xf8,0xa4,0x24,0x3c,0x18,0x00 }, { 0x18,0x3c,0x24,0xa4,0xf8,0xfc,0x84,0x00 }, { 0x44,0x7c,0x78,0x44,0x1c,0x18,0x00,0x00 }, { 0x48,0x5c,0x54,0x54,0x74,0x24,0x00,0x00 }, { 0x00,0x04,0x3e,0x7f,0x44,0x24,0x00,0x00 }, { 0x3c,0x7c,0x40,0x40,0x3c,0x7c,0x40,0x00 }, { 0x1c,0x3c,0x60,0x60,0x3c,0x1c,0x00,0x00 }, { 0x3c,0x7c,0x60,0x30,0x60,0x7c,0x3c,0x00 }, { 0x44,0x6c,0x38,0x10,0x38,0x6c,0x44,0x00 }, { 0x9c,0xbc,0xa0,0xa0,0xfc,0x7c,0x00,0x00 }, { 0x4c,0x64,0x74,0x5c,0x4c,0x64,0x00,0x00 }, { 0x08,0x08,0x3e,0x77,0x41,0x41,0x00,0x00 }, { 0x00,0x00,0x00,0x77,0x77,0x00,0x00,0x00 }, { 0x41,0x41,0x77,0x3e,0x08,0x08,0x00,0x00 }, { 0x02,0x03,0x01,0x03,0x02,0x03,0x01,0x00 }, { 0x78,0x7c,0x46,0x43,0x46,0x7c,0x78,0x00 }, { 0x0e,0x9f,0x91,0xb1,0xfb,0x4a,0x00,0x00 }, { 0x3a,0x7a,0x40,0x40,0x7a,0x7a,0x40,0x00 }, { 0x38,0x7c,0x54,0x55,0x5d,0x19,0x00,0x00 }, { 0x02,0x23,0x75,0x55,0x55,0x7d,0x7b,0x42 }, { 0x21,0x75,0x54,0x54,0x7d,0x79,0x40,0x00 }, { 0x21,0x75,0x55,0x54,0x7c,0x78,0x40,0x00 }, { 0x20,0x74,0x57,0x57,0x7c,0x78,0x40,0x00 }, { 0x18,0x3c,0xa4,0xa4,0xa4,0xe4,0x40,0x00 }, { 0x02,0x3b,0x7d,0x55,0x55,0x5d,0x1b,0x02 }, { 0x39,0x7d,0x54,0x54,0x5d,0x19,0x00,0x00 }, { 0x39,0x7d,0x55,0x54,0x5c,0x18,0x00,0x00 }, { 0x01,0x45,0x7c,0x7c,0x41,0x01,0x00,0x00 }, { 0x02,0x03,0x45,0x7d,0x7d,0x43,0x02,0x00 }, { 0x01,0x45,0x7d,0x7c,0x40,0x00,0x00,0x00 }, { 0x79,0x7d,0x26,0x26,0x7d,0x79,0x00,0x00 }, { 0x70,0x78,0x2b,0x2b,0x78,0x70,0x00,0x00 }, { 0x44,0x7c,0x7c,0x55,0x55,0x45,0x00,0x00 }, { 0x20,0x74,0x54,0x54,0x7c,0x7c,0x54,0x54 }, { 0x7c,0x7e,0x0b,0x09,0x7f,0x7f,0x49,0x00 }, { 0x32,0x7b,0x49,0x49,0x7b,0x32,0x00,0x00 }, { 0x32,0x7a,0x48,0x48,0x7a,0x32,0x00,0x00 }, { 0x32,0x7a,0x4a,0x48,0x78,0x30,0x00,0x00 }, { 0x3a,0x7b,0x41,0x41,0x7b,0x7a,0x40,0x00 }, { 0x3a,0x7a,0x42,0x40,0x78,0x78,0x40,0x00 }, { 0xba,0xba,0xa0,0xa0,0xfa,0x7a,0x00,0x00 }, { 0x19,0x3d,0x66,0x66,0x66,0x3d,0x19,0x00 }, { 0x3d,0x7d,0x40,0x40,0x7d,0x3d,0x00,0x00 }, { 0x18,0x3c,0x24,0xe7,0xe7,0x24,0x24,0x00 }, { 0x68,0x7e,0x7f,0x49,0x43,0x66,0x20,0x00 }, { 0x2b,0x2f,0x7c,0x7c,0x2f,0x2b,0x00,0x00 }, { 0x7f,0x7f,0x09,0x2f,0xf6,0xf8,0xa0,0x00 }, { 0x40,0xc8,0x88,0xfe,0x7f,0x09,0x0b,0x02 }, { 0x20,0x74,0x54,0x55,0x7d,0x79,0x40,0x00 }, { 0x00,0x44,0x7d,0x7d,0x41,0x00,0x00,0x00 }, { 0x30,0x78,0x48,0x4a,0x7a,0x32,0x00,0x00 }, { 0x38,0x78,0x40,0x42,0x7a,0x7a,0x40,0x00 }, { 0x7a,0x7a,0x0a,0x0a,0x7a,0x70,0x00,0x00 }, { 0x7d,0x7d,0x19,0x31,0x7d,0x7d,0x00,0x00 }, { 0x00,0x26,0x2f,0x29,0x2f,0x2f,0x28,0x00 }, { 0x00,0x26,0x2f,0x29,0x29,0x2f,0x26,0x00 }, { 0x30,0x78,0x4d,0x45,0x60,0x20,0x00,0x00 }, { 0x38,0x38,0x08,0x08,0x08,0x08,0x00,0x00 }, { 0x08,0x08,0x08,0x08,0x38,0x38,0x00,0x00 }, { 0x67,0x37,0x18,0xcc,0xee,0xab,0xb9,0x90 }, { 0x6f,0x3f,0x18,0x4c,0x66,0x73,0xf9,0xf8 }, { 0x00,0x00,0x60,0xfa,0xfa,0x60,0x00,0x00 }, { 0x08,0x1c,0x36,0x22,0x08,0x1c,0x36,0x22 }, { 0x22,0x36,0x1c,0x08,0x22,0x36,0x1c,0x08 }, { 0xaa,0x00,0x55,0x00,0xaa,0x00,0x55,0x00 }, { 0xaa,0x55,0xaa,0x55,0xaa,0x55,0xaa,0x55 }, { 0x55,0xff,0xaa,0xff,0x55,0xff,0xaa,0xff }, { 0x00,0x00,0x00,0xff,0xff,0x00,0x00,0x00 }, { 0x10,0x10,0x10,0xff,0xff,0x00,0x00,0x00 }, { 0x14,0x14,0x14,0xff,0xff,0x00,0x00,0x00 }, { 0x10,0x10,0xff,0xff,0x00,0xff,0xff,0x00 }, { 0x10,0x10,0xf0,0xf0,0x10,0xf0,0xf0,0x00 }, { 0x14,0x14,0x14,0xfc,0xfc,0x00,0x00,0x00 }, { 0x14,0x14,0xf7,0xf7,0x00,0xff,0xff,0x00 }, { 0x00,0x00,0xff,0xff,0x00,0xff,0xff,0x00 }, { 0x14,0x14,0xf4,0xf4,0x04,0xfc,0xfc,0x00 }, { 0x14,0x14,0x17,0x17,0x10,0x1f,0x1f,0x00 }, { 0x10,0x10,0x1f,0x1f,0x10,0x1f,0x1f,0x00 }, { 0x14,0x14,0x14,0x1f,0x1f,0x00,0x00,0x00 }, { 0x10,0x10,0x10,0xf0,0xf0,0x00,0x00,0x00 }, { 0x00,0x00,0x00,0x1f,0x1f,0x10,0x10,0x10 }, { 0x10,0x10,0x10,0x1f,0x1f,0x10,0x10,0x10 }, { 0x10,0x10,0x10,0xf0,0xf0,0x10,0x10,0x10 }, { 0x00,0x00,0x00,0xff,0xff,0x10,0x10,0x10 }, { 0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10 }, { 0x10,0x10,0x10,0xff,0xff,0x10,0x10,0x10 }, { 0x00,0x00,0x00,0xff,0xff,0x14,0x14,0x14 }, { 0x00,0x00,0xff,0xff,0x00,0xff,0xff,0x10 }, { 0x00,0x00,0x1f,0x1f,0x10,0x17,0x17,0x14 }, { 0x00,0x00,0xfc,0xfc,0x04,0xf4,0xf4,0x14 }, { 0x14,0x14,0x17,0x17,0x10,0x17,0x17,0x14 }, { 0x14,0x14,0xf4,0xf4,0x04,0xf4,0xf4,0x14 }, { 0x00,0x00,0xff,0xff,0x00,0xf7,0xf7,0x14 }, { 0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14 }, { 0x14,0x14,0xf7,0xf7,0x00,0xf7,0xf7,0x14 }, { 0x14,0x14,0x14,0x17,0x17,0x14,0x14,0x14 }, { 0x10,0x10,0x1f,0x1f,0x10,0x1f,0x1f,0x10 }, { 0x14,0x14,0x14,0xf4,0xf4,0x14,0x14,0x14 }, { 0x10,0x10,0xf0,0xf0,0x10,0xf0,0xf0,0x10 }, { 0x00,0x00,0x1f,0x1f,0x10,0x1f,0x1f,0x10 }, { 0x00,0x00,0x00,0x1f,0x1f,0x14,0x14,0x14 }, { 0x00,0x00,0x00,0xfc,0xfc,0x14,0x14,0x14 }, { 0x00,0x00,0xf0,0xf0,0x10,0xf0,0xf0,0x10 }, { 0x10,0x10,0xff,0xff,0x00,0xff,0xff,0x10 }, { 0x14,0x14,0x14,0xf7,0xf7,0x14,0x14,0x14 }, { 0x10,0x10,0x10,0x1f,0x1f,0x00,0x00,0x00 }, { 0x00,0x00,0x00,0xf0,0xf0,0x10,0x10,0x10 }, { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff }, { 0xf0,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0 }, { 0xff,0xff,0xff,0xff,0x00,0x00,0x00,0x00 }, { 0x00,0x00,0x00,0x00,0xff,0xff,0xff,0xff }, { 0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f }, { 0x38,0x7c,0x44,0x6c,0x38,0x6c,0x44,0x00 }, { 0xfc,0xfe,0x2a,0x2a,0x3e,0x14,0x00,0x00 }, { 0x7e,0x7e,0x02,0x02,0x02,0x06,0x06,0x00 }, { 0x02,0x7e,0x7e,0x02,0x7e,0x7e,0x02,0x00 }, { 0x41,0x63,0x77,0x5d,0x49,0x63,0x63,0x00 }, { 0x38,0x7c,0x44,0x44,0x7c,0x3c,0x04,0x00 }, { 0x80,0xfe,0x7e,0x20,0x20,0x3e,0x1e,0x00 }, { 0x04,0x06,0x02,0x7e,0x7c,0x06,0x02,0x00 }, { 0x99,0xbd,0xe7,0xe7,0xbd,0x99,0x00,0x00 }, { 0x1c,0x3e,0x6b,0x49,0x6b,0x3e,0x1c,0x00 }, { 0x4c,0x7e,0x73,0x01,0x73,0x7e,0x4c,0x00 }, { 0x30,0x78,0x4a,0x4f,0x7d,0x39,0x00,0x00 }, { 0x18,0x3c,0x24,0x3c,0x3c,0x24,0x3c,0x18 }, { 0x98,0xfc,0x64,0x3c,0x3e,0x27,0x3d,0x18 }, { 0x1c,0x3e,0x6b,0x49,0x49,0x49,0x00,0x00 }, { 0x7e,0x7f,0x01,0x01,0x7f,0x7e,0x00,0x00 }, { 0x2a,0x2a,0x2a,0x2a,0x2a,0x2a,0x00,0x00 }, { 0x44,0x44,0x5f,0x5f,0x44,0x44,0x00,0x00 }, { 0x40,0x51,0x5b,0x4e,0x44,0x40,0x00,0x00 }, { 0x40,0x44,0x4e,0x5b,0x51,0x40,0x00,0x00 }, { 0x00,0x00,0x00,0xfe,0xff,0x01,0x07,0x06 }, { 0x60,0xe0,0x80,0xff,0x7f,0x00,0x00,0x00 }, { 0x08,0x08,0x6b,0x6b,0x08,0x08,0x00,0x00 }, { 0x24,0x12,0x12,0x36,0x24,0x24,0x12,0x00 }, { 0x00,0x06,0x0f,0x09,0x0f,0x06,0x00,0x00 }, { 0x00,0x00,0x00,0x18,0x18,0x00,0x00,0x00 }, { 0x00,0x00,0x00,0x10,0x10,0x00,0x00,0x00 }, { 0x10,0x30,0x70,0xc0,0xff,0xff,0x01,0x01 }, { 0x00,0x1f,0x1f,0x01,0x1f,0x1e,0x00,0x00 }, { 0x00,0x19,0x1d,0x15,0x17,0x12,0x00,0x00 }, { 0x00,0x00,0x3c,0x3c,0x3c,0x3c,0x00,0x00 }, { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 } }; const char BOX_CHARS[8] = { 218, 191, 192, 217, 196, 196, 179, 179 }; void draw_box(byte x, byte y, byte x2, byte y2, const char* chars) { byte x1 = x; putchar(x, y, chars[2]); putchar(x2, y, chars[3]); putchar(x, y2, chars[0]); putchar(x2, y2, chars[1]); while (++x < x2) { putchar(x, y, chars[5]); putchar(x, y2, chars[4]); } while (++y < y2) { putchar(x1, y, chars[6]); putchar(x2, y, chars[7]); } } // // MUSIC ROUTINES // // 440.5 1.79270256703 49 const int note_table[64] = { 4305, 4063, 3835, 3620, 3417, 3225, 3044, 2873, 2712, 2560, 2416, 2280, 2152, 2032, 1918, 1810, 1708, 1612, 1522, 1437, 1356, 1280, 1208, 1140, 1076, 1016, 959, 905, 854, 806, 761, 718, 678, 640, 604, 570, 538, 508, 479, 452, 427, 403, 380, 359, 339, 320, 302, 285, 269, 254, 240, 226, 214, 202, 190, 180, 169, 160, 151, 143, 135, 127, 120, 113, }; struct { byte volume; } voice[3]; byte music_index = 0; byte cur_duration = 0; const byte music1[] = { 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}; static const byte* music_ptr = music1; inline byte next_music_byte() { return *music_ptr++; } void play_music() { byte ch; byte enable = 0; byte freech = 0; byte chmask = 1; for (ch=0; ch<3; ch++) { if (voice[ch].volume) { set8910(AY_ENV_VOL_A+ch, voice[ch].volume--); enable |= chmask; } else { freech = ch; } chmask <<= 1; } set8910(AY_ENABLE, ~enable); if (music_ptr) { ch = freech; while (cur_duration == 0) { byte note = next_music_byte(); if ((note & 0x80) == 0) { int period = note_table[note & 63]; set8910(AY_PITCH_A_LO+ch*2, period & 0xff); set8910(AY_PITCH_A_HI+ch*2, period >> 8); voice[ch].volume = 15; ch = ch ? ch-1 : 2; } else { if (note == 0xff) music_ptr = NULL; cur_duration = note & 63; } } cur_duration--; } } void start_music(const byte* music) { music_ptr = music; cur_duration == 0; } void main() { palette = 0; memset(cellram, 0, sizeof(cellram)); memcpy(tileram, font8x8, sizeof(font8x8)); draw_box(0, 0, 27, 31, BOX_CHARS); music_ptr = 0; while (1) { if (!music_ptr) start_music(music1); play_music(); delay(15); // 30 msec delay } }