From 31dd2fc98edff73e6edc48b892bc0fe2e7dbeb37 Mon Sep 17 00:00:00 2001
From: Michel Kremer <kremi151dev@gmail.com>
Date: Tue, 29 Dec 2020 12:29:43 +0100
Subject: [PATCH] Improve doTimers (#20)

---
 core/source/emulator/cpu.cpp | 4 ++--
 core/source/emulator/cpu.h   | 2 +-
 core/source/util/typedefs.h  | 5 +++++
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/core/source/emulator/cpu.cpp b/core/source/emulator/cpu.cpp
index 07eb74c5..caa85cc9 100644
--- a/core/source/emulator/cpu.cpp
+++ b/core/source/emulator/cpu.cpp
@@ -344,12 +344,12 @@ void CPU::doTimers(Memory &memory, u8 clocks) {
             timerOverflowingCycles = -1;
         }
     }
-    u8 tac = memory.getTAC();
+    u8_fast tac = memory.getTAC();
     bool comp1 = (tac & 0b100u) != 0;
     comp1 &= doTimerObscureCheck(clocks, sysCounter, tac);
     // Falling edge detector
     if (delayedTIMAIncrease && !comp1) {
-        u8 tima = memory.getTIMA();
+        u8_fast tima = memory.getTIMA();
         if (tima == 0xff) {
             //fprintf(stdout, "# TIMA has overflown\n");
             // Delay TIMA load by 1 m-cycle
diff --git a/core/source/emulator/cpu.h b/core/source/emulator/cpu.h
index 48b172e6..59a39387 100644
--- a/core/source/emulator/cpu.h
+++ b/core/source/emulator/cpu.h
@@ -52,7 +52,7 @@ namespace FunkyBoy {
 
         u8 registers[8]{};
 
-        i8 timerOverflowingCycles;
+        int timerOverflowingCycles;
         bool delayedTIMAIncrease;
 
         bool joypadWasNotPressed;
diff --git a/core/source/util/typedefs.h b/core/source/util/typedefs.h
index 79de37e7..3ada4f2f 100644
--- a/core/source/util/typedefs.h
+++ b/core/source/util/typedefs.h
@@ -31,6 +31,11 @@ namespace FunkyBoy {
     typedef uint32_t u32;
     typedef uint64_t u64;
 
+    typedef uint_fast8_t u8_fast;
+    typedef uint_fast16_t u16_fast;
+    typedef uint_fast32_t u32_fast;
+    typedef uint_fast64_t u64_fast;
+
     typedef u32 memory_address;
 
     typedef int8_t i8;