diff options
Diffstat (limited to 'emulator.c')
| -rw-r--r-- | emulator.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/emulator.c b/emulator.c index 1c02036..57fc3f3 100644 --- a/emulator.c +++ b/emulator.c @@ -2,7 +2,8 @@ int emulator_initialise(Emulator* emulator) { - uint8_t font[] = { + const uint8_t font[] = + { 0xF0, 0x90, 0x90, 0x90, 0xF0, // 0 0x20, 0x60, 0x20, 0x20, 0x70, // 1 0xF0, 0x10, 0xF0, 0x80, 0xF0, // 2 @@ -19,11 +20,15 @@ int emulator_initialise(Emulator* emulator) 0xE0, 0x90, 0x90, 0x90, 0xE0, // D 0xF0, 0x80, 0xF0, 0x80, 0xF0, // E 0xF0, 0x80, 0xF0, 0x80, 0x80 // F - }; + }; + + //zero out the memory + memset(emulator, 0, sizeof(Emulator)); - memcpy(emulator->memory + 0x50, font, sizeof(font)); + memcpy(emulator->memory + FONT_LOAD_LOCATION, font, sizeof(font)); + emulator->is_on = 1; - return 0; + return 0; } int emulator_load_rom(Emulator* emulator, char* rom_name) @@ -40,13 +45,15 @@ int emulator_load_rom(Emulator* emulator, char* rom_name) fstat(fileno(rom), &st); //rom loaded after 0x200 into memory - int bytes_read = fread(emulator->memory + 0x200, 1, st.st_size, rom); + int bytes_read = fread(emulator->memory + GAME_LOAD_LOCATION, 1, st.st_size, rom); if(bytes_read != st.st_size) { perror("doesnt cuadrar\n"); return 2; } + emulator->pc = GAME_LOAD_LOCATION; + return 0; } |