added mapper_tick() functionality, regressed 200fps, and optimized it back up to ~1940fps

1 files changed, 1 insertions, 4 deletions

diff --git a/cpu.c b/cpu.c
index 23825aa..f6a070e 100644
--- a/cpu.c
+++ b/cpu.c
@@ -80,13 +80,10 @@ static inline void check_interrupts(struct nes_state *state) {
 
 static inline void cpu_tick(struct nes_state *state) {
 	struct cpu_state * restrict cpu = &state->cpu;
-
 	check_interrupts(state);
 
-	uint8_t opcode;
-
 	// printf("%4.4x: ", cpu->pc);
-	opcode = memory_read(state, cpu->pc++);
+	uint8_t opcode = memory_read(state, cpu->pc++);
 	// printf("%2.2x   a:%2.2x x:%2.2x y:%2.2x p:%2.2x sp:%2.2x  cycle: %ld\n", opcode, cpu->a, cpu->x, cpu->y, pack_flags(cpu), cpu->sp, state->cycles);
 	opcode_lut[opcode](state);
 }