From 7da2773f1c6c33f0651f2adcf06b8402acca3890 Mon Sep 17 00:00:00 2001
From: Steve Schnepp <steve.schnepp@pwkf.org>
Date: Mon, 18 Sep 2023 19:35:18 +0200
Subject: [PATCH] compile time cycles

---
 Makefile | 2 ++
 emu.c    | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/Makefile b/Makefile
index 2d29f05..a138ffc 100644
--- a/Makefile
+++ b/Makefile
@@ -3,10 +3,12 @@
 #####################################################################
 BIN := emu
 
+CYCLES_PER_INSTR=12
 OPTIM=g
 CFLAGS += -O$(OPTIM)
 CFLAGS += -pipe
 CFLAGS += -g -Wall -Wextra -Wno-unused-parameter -Wshadow
+CFLAGS += -DCYCLES_PER_INSTR=$(CYCLES_PER_INSTR)
 
 # Uncomment to activate LTO
 #CFLAGS += -flto
diff --git a/emu.c b/emu.c
index 185d6d6..2cfbfc1 100644
--- a/emu.c
+++ b/emu.c
@@ -45,7 +45,9 @@
 #include "emu8051.h"
 #include "emulator.h"
 
+#ifndef CYCLES_PER_INSTR
 #define CYCLES_PER_INSTR 12
+#endif // CYCLES_PER_INSTR
 
 unsigned char history[HISTORY_LINES * (128 + 64 + sizeof(int))];