Frodo4/Src/C64_WIN32.h

/*
 *  C64_WIN32.h - Put the pieces together, WIN32 specific stuff
 *
 *  Frodo (C) 1994-1997,2002-2005 Christian Bauer
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <process.h>
#include "main.h"

#define FRAME_INTERVAL          (1000/SCREEN_FREQ)      // in milliseconds
#ifdef FRODO_SC
#define SPEEDOMETER_INTERVAL    4000                    // in milliseconds
#else
#define SPEEDOMETER_INTERVAL    1000                    // in milliseconds
#endif
#define JOYSTICK_SENSITIVITY    40                      // % of live range
#define JOYSTICK_MIN            0x0000                  // min value of range
#define JOYSTICK_MAX            0xffff                  // max value of range
#define JOYSTICK_RANGE          (JOYSTICK_MAX - JOYSTICK_MIN)

static BOOL high_resolution_timer = FALSE;

/*
 *  Constructor, system-dependent things
 */

void C64::c64_ctor1()
{
        Debug("C64::c64_ctor1\n");

        // Initialize joystick variables.
        joy_state = 0xff;

        // No need to check for state change.
        state_change = FALSE;

        // Start the synchronization timer.
        timer_semaphore = NULL;
        timer_id = NULL;
        StartTimer();
}

void C64::c64_ctor2()
{
        Debug("C64::c64_ctor2\n");
}


/*
 *  Destructor, system-dependent things
 */

void C64::c64_dtor()
{
        Debug("C64::c64_dtor\n");

        StopTimer();
}


/*
 *  Start emulation
 */

void C64::Run()
{
        // Reset chips
        TheCPU->Reset();
        TheSID->Reset();
        TheCIA1->Reset();
        TheCIA2->Reset();
        TheCPU1541->Reset();

        // Patch kernal IEC routines
        orig_kernal_1d84 = Kernal[0x1d84];
        orig_kernal_1d85 = Kernal[0x1d85];
        patch_kernal(ThePrefs.FastReset, ThePrefs.Emul1541Proc);

        // Start the CPU thread
        thread_func();
}


/*
 *  Stop emulation
 */

void C64::Quit()
{
        // Ask the thread to quit itself if it is running
        quit_thyself = TRUE;
        state_change = TRUE;
}


/*
 *  Pause emulation
 */

void C64::Pause()
{
        StopTimer();
        TheSID->PauseSound();
        have_a_break = TRUE;
        state_change = TRUE;
}


/*
 *  Resume emulation
 */

void C64::Resume()
{
        StartTimer();
        TheSID->ResumeSound();
        have_a_break = FALSE;
}


/*
 *  Vertical blank: Poll keyboard and joysticks, update window
 */

void C64::VBlank(bool draw_frame)
{
        //Debug("C64::VBlank\n");

        // Poll the keyboard.
        TheDisplay->PollKeyboard(TheCIA1->KeyMatrix, TheCIA1->RevMatrix, &joykey);
        // Poll the joysticks.
        TheCIA1->Joystick1 = poll_joystick(0);
        TheCIA1->Joystick2 = poll_joystick(1);

        if (ThePrefs.JoystickSwap) {
                uint8 tmp = TheCIA1->Joystick1;
                TheCIA1->Joystick1 = TheCIA1->Joystick2;
                TheCIA1->Joystick2 = tmp;
        }

        // Joystick keyboard emulation.
        if (TheDisplay->NumLock())
                TheCIA1->Joystick1 &= joykey;
        else
                TheCIA1->Joystick2 &= joykey;

        // Count TOD clocks.
        TheCIA1->CountTOD();
        TheCIA2->CountTOD();

#if 1
        // Output a frag.
        TheSID->VBlank();
#endif
        
        if (have_a_break)
                return;

        // Update the window if needed.
        frame++;
        if (draw_frame) {

                // Synchronize to the timer if limiting the speed.
                if (ThePrefs.LimitSpeed) {
                        if (skipped_frames == 0) {
                                // There is a tiny race condtion here that
                                // could cause a full extra delay cycle.
                                WaitForSingleObject(timer_semaphore, INFINITE);
                        }
                        else {
                                Debug("*** Skipped a frame! ***\n");
                                skipped_frames = 0;
                        }
                }

                // Perform the actual screen update exactly at the
                // beginning of an interval for the smoothest video.
                TheDisplay->Update();

                // Compute the speed index and show it in the speedometer.
                DWORD now = timeGetTime();
                int elapsed_time = now - ref_time;
                if (now - ref_time >= SPEEDOMETER_INTERVAL) {
                        double speed_index = double(frame * FRAME_INTERVAL * 100 + elapsed_time/2) / elapsed_time;
                        TheDisplay->Speedometer((int)speed_index);
                        ref_time = now;
                        frame = 0;
                }

                // Make sure our timer is set correctly.
                CheckTimerChange();
        }
}


void C64::CheckTimerChange()
{
        // Make sure the timer interval matches the preferences.
        if (!ThePrefs.LimitSpeed && timer_every == 0)
                return;
        if (ThePrefs.LimitSpeed && ThePrefs.SkipFrames == timer_every)
                return;
        StopTimer();
        StartTimer();
}

/*
 *  Open/close joystick drivers given old and new state of
 *  joystick preferences
 */

BOOL joystick_open[2];

void C64::open_close_joysticks(int oldjoy1, int oldjoy2, int newjoy1, int newjoy2)
{
        if (oldjoy1 != newjoy1) {
                joystick_open[0] = FALSE;
                if (newjoy1) {
                        JOYINFO joyinfo;
                        if (joyGetPos(0, &joyinfo) == JOYERR_NOERROR)
                                joystick_open[0] = TRUE;
                }
        }

        if (oldjoy2 != newjoy2) {
                joystick_open[1] = FALSE;
                if (newjoy1) {
                        JOYINFO joyinfo;
                        if (joyGetPos(1, &joyinfo) == JOYERR_NOERROR)
                                joystick_open[1] = TRUE;
                }
        }

        // XXX: Should have our own new prefs!
        state_change = TRUE;
}


/*
 *  Poll joystick port, return CIA mask
 */

uint8 C64::poll_joystick(int port)
{
        uint8 j = 0xff;

        if (joystick_open[port]) {
                JOYINFO joyinfo;
                if (joyGetPos(port, &joyinfo) == JOYERR_NOERROR) {
                        int x = joyinfo.wXpos;
                        int y = joyinfo.wYpos;
                        int buttons = joyinfo.wButtons;
                        int s1 = JOYSTICK_SENSITIVITY;
                        int s2 = 100 - JOYSTICK_SENSITIVITY;
                        if (x < JOYSTICK_MIN + s1*JOYSTICK_RANGE/100)
                                j &= 0xfb; // Left
                        else if (x > JOYSTICK_MIN + s2*JOYSTICK_RANGE/100)
                                j &= 0xf7; // Right
                        if (y < JOYSTICK_MIN + s1*JOYSTICK_RANGE/100)
                                j &= 0xfe; // Up
                        else if (y > JOYSTICK_MIN + s2*JOYSTICK_RANGE/100)
                                j &= 0xfd; // Down
                        if (buttons & 1)
                                j &= 0xef; // Button
                        if (buttons & 2) {
                                Pause();
                                while (joyGetPos(port, &joyinfo) == JOYERR_NOERROR && (joyinfo.wButtons & 2))
                                        Sleep(100);
                                Resume();
                        }
                }
        }

        return j;
}

void C64::StartTimer()
{
        ref_time = timeGetTime();
        skipped_frames = 0;
        frame = 0;

        if (!ThePrefs.LimitSpeed) {
                timer_every = 0;
                StopTimer();
                return;
        }
        timer_every = ThePrefs.SkipFrames;

        if (!timer_semaphore) {
                timer_semaphore = CreateSemaphore(NULL, 0, 1, NULL);
                if (!timer_semaphore)
                        Debug("CreateSemaphore failed\n");
        }

        if (!timer_id) {

                // Turn on high-resolution times and delays.
                int resolution = FRAME_INTERVAL;
                if (high_resolution_timer) {
                        timeBeginPeriod(1);
                        resolution = 0;
                }

                timer_id = timeSetEvent(timer_every*FRAME_INTERVAL, resolution, StaticTimeProc, (DWORD) this, TIME_PERIODIC);
                if (!timer_id)
                        Debug("timeSetEvent failed\n");
        }
}

void C64::StopTimer()
{
        if (timer_semaphore) {
                CloseHandle(timer_semaphore);
                timer_semaphore = NULL;
        }
        if (timer_id) {
                timeKillEvent(timer_id);
                timer_id = NULL;

                // Turn off high-resolution delays.
                if (high_resolution_timer)
                        timeEndPeriod(1);
        }

}

void CALLBACK C64::StaticTimeProc(UINT uID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2)
{
        C64* TheC64 = (C64 *) dwUser;
        TheC64->TimeProc(uID);
}

void C64::TimeProc(UINT id)
{
        if (id != timer_id) {
                Debug("TimeProc called for wrong timer id!\n");
                timeKillEvent(id);
                return;
        }

        if (!ReleaseSemaphore(timer_semaphore, 1, NULL))
                skipped_frames++;
}


/*
 * The emulation's main loop
 */

void C64::thread_func()
{
        Debug("C64::thread_func\n");

        thread_running = TRUE;

        while (!quit_thyself) {

                if (have_a_break)
                        TheDisplay->WaitUntilActive();

#ifdef FRODO_SC
                if (ThePrefs.Emul1541Proc)
                        EmulateCyclesWith1541();
                else
                        EmulateCyclesWithout1541();
                state_change = FALSE;
#else
                // The order of calls is important here
                int cycles = TheVIC->EmulateLine();
                TheSID->EmulateLine();
#if !PRECISE_CIA_CYCLES
                TheCIA1->EmulateLine(ThePrefs.CIACycles);
                TheCIA2->EmulateLine(ThePrefs.CIACycles);
#endif
                if (ThePrefs.Emul1541Proc) {
                        int cycles_1541 = ThePrefs.FloppyCycles;
                        TheCPU1541->CountVIATimers(cycles_1541);

                        if (!TheCPU1541->Idle) {
                                // 1541 processor active, alternately execute
                                //  6502 and 6510 instructions until both have
                                //  used up their cycles
                                while (cycles >= 0 || cycles_1541 >= 0)
                                        if (cycles > cycles_1541)
                                                cycles -= TheCPU->EmulateLine(1);
                                        else
                                                cycles_1541 -= TheCPU1541->EmulateLine(1);
                        } else
                                TheCPU->EmulateLine(cycles);
                } else
                        // 1541 processor disabled, only emulate 6510
                        TheCPU->EmulateLine(cycles);
#endif
        }

        thread_running = FALSE;

}

#ifdef FRODO_SC

void C64::EmulateCyclesWith1541()
{
        thread_running = TRUE;
        while (!state_change) {
                // The order of calls is important here
                if (TheVIC->EmulateCycle())
                        TheSID->EmulateLine();
#ifndef BATCH_CIA_CYCLES
                TheCIA1->EmulateCycle();
                TheCIA2->EmulateCycle();
#endif
                TheCPU->EmulateCycle();
                TheCPU1541->CountVIATimers(1);
                if (!TheCPU1541->Idle)
                        TheCPU1541->EmulateCycle();
                CycleCounter++;
        }
}

void C64::EmulateCyclesWithout1541()
{
        thread_running = TRUE;
        while (!state_change) {
                // The order of calls is important here
                if (TheVIC->EmulateCycle())
                        TheSID->EmulateLine();
#ifndef BATCH_CIA_CYCLES
                TheCIA1->EmulateCycle();
                TheCIA2->EmulateCycle();
#endif
                TheCPU->EmulateCycle();
                CycleCounter++;
        }
}

#endif
Revision:	1.5
Committed:	2005-06-27T19:55:48Z (19 years, 4 months ago) by cebix
Content type:	text/plain
Branch:	MAIN
CVS Tags:	VERSION_4_2, HEAD
Changes since 1.4:	+1 -1 lines
Log Message:	updated copyright dates
#	User	Rev	Content
1	cebix	1.1	/*
2			* C64_WIN32.h - Put the pieces together, WIN32 specific stuff
3			*
4	cebix	1.5	* Frodo (C) 1994-1997,2002-2005 Christian Bauer
5	cebix	1.1	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19			*/
20
21			#include <process.h>
22			#include "main.h"
23
24			#define FRAME_INTERVAL (1000/SCREEN_FREQ) // in milliseconds
25			#ifdef FRODO_SC
26			#define SPEEDOMETER_INTERVAL 4000 // in milliseconds
27			#else
28			#define SPEEDOMETER_INTERVAL 1000 // in milliseconds
29			#endif
30			#define JOYSTICK_SENSITIVITY 40 // % of live range
31			#define JOYSTICK_MIN 0x0000 // min value of range
32			#define JOYSTICK_MAX 0xffff // max value of range
33			#define JOYSTICK_RANGE (JOYSTICK_MAX - JOYSTICK_MIN)
34
35			static BOOL high_resolution_timer = FALSE;
36
37			/*
38			* Constructor, system-dependent things
39			*/
40
41			void C64::c64_ctor1()
42			{
43			Debug("C64::c64_ctor1\n");
44
45			// Initialize joystick variables.
46			joy_state = 0xff;
47
48			// No need to check for state change.
49			state_change = FALSE;
50
51			// Start the synchronization timer.
52			timer_semaphore = NULL;
53			timer_id = NULL;
54			StartTimer();
55			}
56
57			void C64::c64_ctor2()
58			{
59			Debug("C64::c64_ctor2\n");
60			}
61
62
63			/*
64			* Destructor, system-dependent things
65			*/
66
67			void C64::c64_dtor()
68			{
69			Debug("C64::c64_dtor\n");
70
71			StopTimer();
72			}
73
74
75			/*
76			* Start emulation
77			*/
78
79			void C64::Run()
80			{
81			// Reset chips
82			TheCPU->Reset();
83			TheSID->Reset();
84			TheCIA1->Reset();
85			TheCIA2->Reset();
86			TheCPU1541->Reset();
87
88			// Patch kernal IEC routines
89			orig_kernal_1d84 = Kernal[0x1d84];
90			orig_kernal_1d85 = Kernal[0x1d85];
91			patch_kernal(ThePrefs.FastReset, ThePrefs.Emul1541Proc);
92
93			// Start the CPU thread
94			thread_func();
95			}
96
97
98			/*
99			* Stop emulation
100			*/
101
102			void C64::Quit()
103			{
104			// Ask the thread to quit itself if it is running
105			quit_thyself = TRUE;
106			state_change = TRUE;
107			}
108
109
110			/*
111			* Pause emulation
112			*/
113
114			void C64::Pause()
115			{
116			StopTimer();
117			TheSID->PauseSound();
118			have_a_break = TRUE;
119			state_change = TRUE;
120			}
121
122
123			/*
124			* Resume emulation
125			*/
126
127			void C64::Resume()
128			{
129			StartTimer();
130			TheSID->ResumeSound();
131			have_a_break = FALSE;
132			}
133
134
135			/*
136			* Vertical blank: Poll keyboard and joysticks, update window
137			*/
138
139			void C64::VBlank(bool draw_frame)
140			{
141			//Debug("C64::VBlank\n");
142
143			// Poll the keyboard.
144			TheDisplay->PollKeyboard(TheCIA1->KeyMatrix, TheCIA1->RevMatrix, &joykey);
145			// Poll the joysticks.
146			TheCIA1->Joystick1 = poll_joystick(0);
147			TheCIA1->Joystick2 = poll_joystick(1);
148
149			if (ThePrefs.JoystickSwap) {
150			uint8 tmp = TheCIA1->Joystick1;
151			TheCIA1->Joystick1 = TheCIA1->Joystick2;
152			TheCIA1->Joystick2 = tmp;
153			}
154
155			// Joystick keyboard emulation.
156			if (TheDisplay->NumLock())
157			TheCIA1->Joystick1 &= joykey;
158			else
159			TheCIA1->Joystick2 &= joykey;
160
161			// Count TOD clocks.
162			TheCIA1->CountTOD();
163			TheCIA2->CountTOD();
164
165			#if 1
166			// Output a frag.
167			TheSID->VBlank();
168			#endif
169
170			if (have_a_break)
171			return;
172
173			// Update the window if needed.
174			frame++;
175			if (draw_frame) {
176
177			// Synchronize to the timer if limiting the speed.
178			if (ThePrefs.LimitSpeed) {
179			if (skipped_frames == 0) {
180			// There is a tiny race condtion here that
181			// could cause a full extra delay cycle.
182			WaitForSingleObject(timer_semaphore, INFINITE);
183			}
184			else {
185			Debug("* Skipped a frame! *\n");
186			skipped_frames = 0;
187			}
188			}
189
190			// Perform the actual screen update exactly at the
191			// beginning of an interval for the smoothest video.
192			TheDisplay->Update();
193
194			// Compute the speed index and show it in the speedometer.
195			DWORD now = timeGetTime();
196			int elapsed_time = now - ref_time;
197			if (now - ref_time >= SPEEDOMETER_INTERVAL) {
198			double speed_index = double(frame * FRAME_INTERVAL * 100 + elapsed_time/2) / elapsed_time;
199			TheDisplay->Speedometer((int)speed_index);
200			ref_time = now;
201			frame = 0;
202			}
203
204			// Make sure our timer is set correctly.
205			CheckTimerChange();
206			}
207			}
208
209
210			void C64::CheckTimerChange()
211			{
212			// Make sure the timer interval matches the preferences.
213			if (!ThePrefs.LimitSpeed && timer_every == 0)
214			return;
215			if (ThePrefs.LimitSpeed && ThePrefs.SkipFrames == timer_every)
216			return;
217			StopTimer();
218			StartTimer();
219			}
220
221			/*
222			* Open/close joystick drivers given old and new state of
223			* joystick preferences
224			*/
225
226			BOOL joystick_open[2];
227
228	cebix	1.3	void C64::open_close_joysticks(int oldjoy1, int oldjoy2, int newjoy1, int newjoy2)
229	cebix	1.1	{
230			if (oldjoy1 != newjoy1) {
231			joystick_open[0] = FALSE;
232			if (newjoy1) {
233			JOYINFO joyinfo;
234			if (joyGetPos(0, &joyinfo) == JOYERR_NOERROR)
235			joystick_open[0] = TRUE;
236			}
237			}
238
239			if (oldjoy2 != newjoy2) {
240			joystick_open[1] = FALSE;
241			if (newjoy1) {
242			JOYINFO joyinfo;
243			if (joyGetPos(1, &joyinfo) == JOYERR_NOERROR)
244			joystick_open[1] = TRUE;
245			}
246			}
247
248			// XXX: Should have our own new prefs!
249			state_change = TRUE;
250			}
251
252
253			/*
254			* Poll joystick port, return CIA mask
255			*/
256
257			uint8 C64::poll_joystick(int port)
258			{
259			uint8 j = 0xff;
260
261			if (joystick_open[port]) {
262			JOYINFO joyinfo;
263			if (joyGetPos(port, &joyinfo) == JOYERR_NOERROR) {
264			int x = joyinfo.wXpos;
265			int y = joyinfo.wYpos;
266			int buttons = joyinfo.wButtons;
267			int s1 = JOYSTICK_SENSITIVITY;
268			int s2 = 100 - JOYSTICK_SENSITIVITY;
269			if (x < JOYSTICK_MIN + s1*JOYSTICK_RANGE/100)
270			j &= 0xfb; // Left
271			else if (x > JOYSTICK_MIN + s2*JOYSTICK_RANGE/100)
272			j &= 0xf7; // Right
273			if (y < JOYSTICK_MIN + s1*JOYSTICK_RANGE/100)
274			j &= 0xfe; // Up
275			else if (y > JOYSTICK_MIN + s2*JOYSTICK_RANGE/100)
276			j &= 0xfd; // Down
277			if (buttons & 1)
278			j &= 0xef; // Button
279			if (buttons & 2) {
280			Pause();
281			while (joyGetPos(port, &joyinfo) == JOYERR_NOERROR && (joyinfo.wButtons & 2))
282			Sleep(100);
283			Resume();
284			}
285			}
286			}
287
288			return j;
289			}
290
291			void C64::StartTimer()
292			{
293			ref_time = timeGetTime();
294			skipped_frames = 0;
295			frame = 0;
296
297			if (!ThePrefs.LimitSpeed) {
298			timer_every = 0;
299			StopTimer();
300			return;
301			}
302			timer_every = ThePrefs.SkipFrames;
303
304			if (!timer_semaphore) {
305			timer_semaphore = CreateSemaphore(NULL, 0, 1, NULL);
306			if (!timer_semaphore)
307			Debug("CreateSemaphore failed\n");
308			}
309
310			if (!timer_id) {
311
312			// Turn on high-resolution times and delays.
313			int resolution = FRAME_INTERVAL;
314			if (high_resolution_timer) {
315			timeBeginPeriod(1);
316			resolution = 0;
317			}
318
319			timer_id = timeSetEvent(timer_every*FRAME_INTERVAL, resolution, StaticTimeProc, (DWORD) this, TIME_PERIODIC);
320			if (!timer_id)
321			Debug("timeSetEvent failed\n");
322			}
323			}
324
325			void C64::StopTimer()
326			{
327			if (timer_semaphore) {
328			CloseHandle(timer_semaphore);
329			timer_semaphore = NULL;
330			}
331			if (timer_id) {
332			timeKillEvent(timer_id);
333			timer_id = NULL;
334
335			// Turn off high-resolution delays.
336			if (high_resolution_timer)
337			timeEndPeriod(1);
338			}
339
340			}
341
342			void CALLBACK C64::StaticTimeProc(UINT uID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2)
343			{
344			C64* TheC64 = (C64 *) dwUser;
345			TheC64->TimeProc(uID);
346			}
347
348			void C64::TimeProc(UINT id)
349			{
350			if (id != timer_id) {
351			Debug("TimeProc called for wrong timer id!\n");
352			timeKillEvent(id);
353			return;
354			}
355
356			if (!ReleaseSemaphore(timer_semaphore, 1, NULL))
357			skipped_frames++;
358			}
359
360
361			/*
362			* The emulation's main loop
363			*/
364
365			void C64::thread_func()
366			{
367			Debug("C64::thread_func\n");
368
369			thread_running = TRUE;
370
371			while (!quit_thyself) {
372
373			if (have_a_break)
374			TheDisplay->WaitUntilActive();
375
376			#ifdef FRODO_SC
377			if (ThePrefs.Emul1541Proc)
378			EmulateCyclesWith1541();
379			else
380			EmulateCyclesWithout1541();
381			state_change = FALSE;
382			#else
383			// The order of calls is important here
384			int cycles = TheVIC->EmulateLine();
385			TheSID->EmulateLine();
386			#if !PRECISE_CIA_CYCLES
387			TheCIA1->EmulateLine(ThePrefs.CIACycles);
388			TheCIA2->EmulateLine(ThePrefs.CIACycles);
389			#endif
390			if (ThePrefs.Emul1541Proc) {
391			int cycles_1541 = ThePrefs.FloppyCycles;
392			TheCPU1541->CountVIATimers(cycles_1541);
393
394			if (!TheCPU1541->Idle) {
395			// 1541 processor active, alternately execute
396			// 6502 and 6510 instructions until both have
397			// used up their cycles
398			while (cycles >= 0 \|\| cycles_1541 >= 0)
399			if (cycles > cycles_1541)
400			cycles -= TheCPU->EmulateLine(1);
401			else
402			cycles_1541 -= TheCPU1541->EmulateLine(1);
403			} else
404			TheCPU->EmulateLine(cycles);
405			} else
406			// 1541 processor disabled, only emulate 6510
407			TheCPU->EmulateLine(cycles);
408			#endif
409			}
410
411			thread_running = FALSE;
412
413			}
414
415			#ifdef FRODO_SC
416
417			void C64::EmulateCyclesWith1541()
418			{
419			thread_running = TRUE;
420			while (!state_change) {
421			// The order of calls is important here
422			if (TheVIC->EmulateCycle())
423			TheSID->EmulateLine();
424			#ifndef BATCH_CIA_CYCLES
425			TheCIA1->EmulateCycle();
426			TheCIA2->EmulateCycle();
427			#endif
428			TheCPU->EmulateCycle();
429			TheCPU1541->CountVIATimers(1);
430			if (!TheCPU1541->Idle)
431			TheCPU1541->EmulateCycle();
432			CycleCounter++;
433			}
434			}
435
436			void C64::EmulateCyclesWithout1541()
437			{
438			thread_running = TRUE;
439			while (!state_change) {
440			// The order of calls is important here
441			if (TheVIC->EmulateCycle())
442			TheSID->EmulateLine();
443			#ifndef BATCH_CIA_CYCLES
444			TheCIA1->EmulateCycle();
445			TheCIA2->EmulateCycle();
446			#endif
447			TheCPU->EmulateCycle();
448			CycleCounter++;
449			}
450			}
451
452			#endif