diff --git a/src/rk65c02.c b/src/rk65c02.c
index c429c0d..b388f53 100644
--- a/src/rk65c02.c
+++ b/src/rk65c02.c
@@ -82,6 +82,54 @@ rk65c02_step(rk65c02emu_t *e, uint16_t steps) {
 		i++;
 	}
 }
+
+void
+rk65c02_dump_regs(rk65c02emu_t *e)
+{
+	printf("A: %X X: %X Y: %X SP: %X P: ", e->regs.A, e->regs.X, e->regs.Y, e->regs.SP);
+
+	if (e->regs.P & P_NEGATIVE)
+		printf("N");
+	else
+		printf("-");
+
+	if (e->regs.P & P_SIGN_OVERFLOW)
+		printf("O");
+	else
+		printf("-");
+
+	if (e->regs.P & P_UNDEFINED)
+		printf("1");
+	else
+		printf("-");
+
+	if (e->regs.P & P_BREAK)
+		printf("B");
+	else
+		printf("-");
+
+	if (e->regs.P & P_DECIMAL)
+		printf("D");
+	else
+		printf("-");
+
+	if (e->regs.P & P_IRQ_DISABLE)
+		printf("I");
+	else
+		printf("-");
+
+	if (e->regs.P & P_ZERO)
+		printf("Z");
+	else
+		printf("-");
+
+	if (e->regs.P & P_CARRY)
+		printf("C");
+	else
+		printf("-");
+
+	printf("\n");
+}
 /*
 int
 main(void)
diff --git a/src/rk65c02.h b/src/rk65c02.h
index 4349fc7..7d3e084 100644
--- a/src/rk65c02.h
+++ b/src/rk65c02.h
@@ -58,6 +58,7 @@ typedef struct rk65c02emu rk65c02emu_t;
 rk65c02emu_t rk65c02_init(bus_t *);
 void rk65c02_start(rk65c02emu_t *);
 void rk65c02_step(rk65c02emu_t *, uint16_t);
+void rk65c02_dump_regs(rk65c02emu_t *);
 
 #endif