diff options
| -rw-r--r-- | chip8.c | 9 | ||||
| -rw-r--r-- | main.c | 13 |
2 files changed, 8 insertions, 14 deletions
@@ -94,15 +94,6 @@ chip8_init() { memory[0x0 + i] = chip8_fontset[i]; } - - /* - uint8_t sinv[] = {0xBA, 0x7C, 0xD6, 0xFE, 0x54, 0xAA}; - // temp - for (uint8_t i = 0; i <= FONT_WIDTH; i++) - { - memory[PROGRAM_START+i] = sinv[i]; - } - */ } void @@ -28,7 +28,7 @@ * https://slack-files.com/T3CH37TNX-F3RKEUKL4-b05ab4930d?nojsmode=1 */ -#define VIDEO_SCALE 5 +//#define VIDEO_SCALE 5 #define STEPPING 0 // set to 1 to step manually through program SDL_Window *window; @@ -46,6 +46,7 @@ void handle_key_up(int keycode); uint8_t get_chip8_key(int keycode); void print_registers(); +int VIDEO_SCALE = 5; int step_cycle = 0; extern uint32_t video[WIDTH*HEIGHT]; @@ -62,7 +63,7 @@ extern uint16_t stack[STACK_SIZE]; void usage(char *program) { - printf("usage: %s [romfile]\n", program); + printf("usage: %s [speed] [scale] [romfile]\nspeed - how many cycles per second should be run (60-1000 or so, depends on the game)\nscale - pixel scaling (~5 recommended)", program); } void @@ -204,15 +205,17 @@ handle_sdl_events() int main(int argc, char *argv[]) { - if (argc < 2) + if (argc < 4) { usage(argv[0]); exit(EXIT_FAILURE); } + + VIDEO_SCALE = atoi(argv[1]); chip8_init(); - if (!load_rom(argv[1])) + if (!load_rom(argv[3])) { fprintf(stderr, "cannot start interpreter\n"); exit(EXIT_FAILURE); @@ -220,7 +223,7 @@ int main(int argc, char *argv[]) init_video(); - const int fps = 300; + const int fps = atoi(argv[2]); const int frame_delay = 1000/fps; uint32_t frame_start; uint32_t frame_time; |