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#include <assert.h>
#include "base.c"
#include "mknes.h"
// #include "apu.c"
#include "ppu.c"
#include "memory.c"
#include "cpu.c"
#include "ines2.c"
#include "mapper.c"
struct nes_state nstate;
static uint32_t frames;
static void render_callback(void) {
clear_buffer();
while(!nstate.ppu.frame_ready) {
cpu_tick(&nstate);
}
nstate.ppu.frame_ready = 0;
frames++;
uint32_t *dst = RENDER_START(0,0);
uint8_t *src = nstate.ppu.pixels;
for(uint32_t y = 0; y < 240; ++y) {
for(uint32_t x = 0; x < 256; ++x) {
uint8_t val = *src++;
if(val >= 64) val = 0;
dst[x] = nes_palette[val];
}
dst += BUFFER_WIDTH;
}
}
static void shutdown_callback() {
printf("%d\n", frames);
}
static void audio_callback(int16_t *buffer, size_t frames) {
}
#include <sys/mman.h>
#include <unistd.h>
void protect_opcode_lut(void) {
uintptr_t addr = (uintptr_t)opcode_lut;
size_t page_size = getpagesize();
uintptr_t page = addr & ~(page_size - 1);
if(mprotect((void*)page, page_size, PROT_READ) != 0) {
perror("mprotect");
abort();
}
}
static void init_callback(void) {
setbuf(stdout, 0);
init_opcode_lut();
init_opcode_ud_lut();
// protect_opcode_lut();
ppu_reset(&nstate);
// ines2_load(&nstate, "data/nrom/10-Yard Fight (USA, Europe).nes");
// ines2_load(&nstate, "data/nrom/Balloon Fight (USA).nes");
// ines2_load(&nstate, "data/nrom/Excitebike (Japan, USA).nes");
ines2_load(&nstate, "data/nrom/Ice Climber (USA, Europe, Korea).nes");
// ines2_load(&nstate, "data/nrom/Kung Fu (Japan, USA).nes");
// ines2_load(&nstate, "data/nrom/Super Mario Bros. (World) (HVC-SM).nes");
// ines2_load(&nstate, "data/nrom/Urban Champion (World).nes");
// ines2_load(&nstate, "data/nrom/Wrecking Crew (World).nes");
mapper_setup(&nstate);
uint32_t lo = nstate.mapper.read(&nstate, 0xfffc);
uint32_t hi = nstate.mapper.read(&nstate, 0xfffd);
nstate.cpu.pc = (hi << 8) | lo;
}
// int main(void) {
// struct nes_state state = {0};
// init_opcode_lut();
// init_opcode_ud_lut();
// state.cpu.sp = 0xfd;
// // FILE *f = fopen("nestest.nes", "rb");
// // fseek(f, 16, SEEK_SET);
// // fread(&state.memory[0xc000], 1, 0x4000, f);
// // fclose(f);
// // state.cpu.pc = 0xc000;
// FILE *f = fopen("6502_functional_test.bin", "rb");
// fread(state.memory, 1, 0x10000, f);
// fclose(f);
// state.cpu.pc = 0x0400;
// size_t i;
// for(i = 0; i < 70000000; ++i) {
// cpu_tick(&state);
// if(state.cpu.pc == 0x3469) break;
// }
// // printf("%lld", i);
// return 0;
// }
// bool running = true;
// uint64_t next_update = mkfw_gettime();
// int64_t frame_duration_ns = 16666667; // NTSC ~60.0988 Hz
// audio_sync_init(next_update); // Initialize sync base time
// while(running && !mkfw_should_close()) {
// mkfw_pump_messages();
// if(key_pressed(MKS_KEY_ESCAPE)) { running = false; }
// #ifdef PROFILER
// reset_profiling_data();
// #endif
// render_callback();
// apply_phosphor_decay();
// update_keyboard_state();
// update_modifier_state();
// update_mouse_state();
// state.frame_number++;
// #ifndef PERF_TEST
// render_frame();
// #ifdef PROFILER
// debug_render();
// #endif
// audio_throttle_emulator(state.frame_number, &frame_duration_ns);
// uint64_t now = mkfw_gettime();
// int64_t remaining = next_update - now;
// if(remaining > 0) {
// if(remaining > ONE_MILLISECOND_NS) {
// mkfw_sleep(remaining - ONE_MILLISECOND_NS);
// }
// while(mkfw_gettime() < next_update) { /**/ }
// } else {
// next_update = now;
// }
// next_update += frame_duration_ns;
// mkfw_swap_buffers();
// #endif
// }
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