From ea7ce8a23b1fc9a6815577e7af439a6d6c528951 Mon Sep 17 00:00:00 2001
From: Autch <autch@autch.net>
Date: Mon, 18 Feb 2019 01:56:38 +0900
Subject: [PATCH] =?UTF-8?q?CPU=E6=99=82=E9=96=93=E3=82=92=E3=82=AF?=
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---
 emu.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/emu.c b/emu.c
index e4012e8..c16625d 100644
--- a/emu.c
+++ b/emu.c
@@ -91,12 +91,15 @@ int emu_work(void *ctx)
     unsigned nClocksDivBy1k = nSystemClock / 1000;
     unsigned nMSecPerFrame = 1000 / context->o_fps;
     unsigned nClocksShr14 = nSystemClock >> 14; // nClocks SHift to Right 14bits
+    unsigned clocksPerFrame = nSystemClock / context->o_fps;
 
     SDL_TimerID clock_keeper = SDL_AddTimer(500, emu_clockkeeper_work, context);
 
     do {
         unsigned real_org = SDL_GetTicks();
 
+        CLK = 0;
+
         do {
             /* 命令実行。 */
             if(!context->core.in_halt) {
@@ -124,7 +127,7 @@ int emu_work(void *ctx)
             if (bWD_EN_EWD) core_trap_from_devices(context, TRAP_NMI, 0);
 
             SDL_Delay(1);
-        }while(!context->bEndFlag && (SDL_GetTicks() - real_org) < nMSecPerFrame);
+        }while(!context->bEndFlag && CLK < clocksPerFrame);
 
         /* 実時間との同期 */
         if (!context->o_nowait) {