2013-07-06 04:37:13 +00:00
|
|
|
/*
|
2013-10-06 06:22:08 +00:00
|
|
|
* Apple // emulator for *nix
|
2013-06-28 06:36:25 +00:00
|
|
|
*
|
2013-10-06 06:22:08 +00:00
|
|
|
* This software package is subject to the GNU General Public License
|
|
|
|
* version 2 or later (your choice) as published by the Free Software
|
|
|
|
* Foundation.
|
2013-06-28 06:36:25 +00:00
|
|
|
*
|
2013-10-06 06:22:08 +00:00
|
|
|
* THERE ARE NO WARRANTIES WHATSOEVER.
|
2013-07-06 04:37:13 +00:00
|
|
|
*
|
2013-06-28 06:36:25 +00:00
|
|
|
*/
|
|
|
|
|
2013-10-06 06:22:08 +00:00
|
|
|
/*
|
|
|
|
* 65c02 CPU Timing Support. Some source derived from AppleWin.
|
|
|
|
*
|
|
|
|
* Copyleft 2013 Aaron Culliney
|
|
|
|
*
|
|
|
|
*/
|
2013-06-28 06:36:25 +00:00
|
|
|
|
2014-01-23 04:42:34 +00:00
|
|
|
#include "common.h"
|
2014-06-21 21:26:39 +00:00
|
|
|
#ifdef __APPLE__
|
|
|
|
#include "darwin-shim.h"
|
|
|
|
#endif
|
2013-10-06 06:22:08 +00:00
|
|
|
|
|
|
|
#define EXECUTION_PERIOD_NSECS 1000000 // AppleWin: nExecutionPeriodUsec
|
2013-06-28 06:36:25 +00:00
|
|
|
|
2015-01-11 20:12:51 +00:00
|
|
|
#define DEBUG_TIMING (!defined(NDEBUG) && 0) // enable to print timing stats
|
|
|
|
#if DEBUG_TIMING
|
|
|
|
# define TIMING_LOG(...) LOG(__VA_ARGS__)
|
|
|
|
#else
|
|
|
|
# define TIMING_LOG(...)
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#define DISK_MOTOR_QUIET_NSECS 2000000
|
|
|
|
|
|
|
|
static const unsigned int uCyclesPerLine = 65; // 25 cycles of HBL & 40 cycles of HBL'
|
|
|
|
static const unsigned int uVisibleLinesPerFrame = 64*3; // 192
|
|
|
|
static const unsigned int uLinesPerFrame = 262; // 64 in each third of the screen & 70 in VBL
|
|
|
|
static const unsigned int dwClksPerFrame = uCyclesPerLine * uLinesPerFrame; // 17030
|
2015-01-10 17:53:38 +00:00
|
|
|
|
2013-10-06 06:22:08 +00:00
|
|
|
double g_fCurrentCLK6502 = CLK_6502;
|
|
|
|
bool g_bFullSpeed = false; // HACK TODO FIXME : prolly shouldn't be global anymore -- don't think it's necessary for speaker/soundcore/etc anymore ...
|
|
|
|
uint64_t g_nCumulativeCycles = 0; // cumulative cycles since emulator (re)start
|
|
|
|
int g_nCpuCyclesFeedback = 0;
|
2015-01-10 17:53:38 +00:00
|
|
|
static unsigned int g_dwCyclesThisFrame = 0;
|
2013-10-06 08:31:58 +00:00
|
|
|
|
|
|
|
static bool alt_speed_enabled = false;
|
2015-01-11 20:12:51 +00:00
|
|
|
|
2013-10-06 06:22:08 +00:00
|
|
|
double cpu_scale_factor = 1.0;
|
2013-10-06 08:31:58 +00:00
|
|
|
double cpu_altscale_factor = 1.0;
|
2015-01-11 20:27:39 +00:00
|
|
|
bool auto_adjust_speed = true;
|
2013-07-22 00:20:03 +00:00
|
|
|
|
2013-12-21 21:55:40 +00:00
|
|
|
int gc_cycles_timer_0 = 0;
|
|
|
|
int gc_cycles_timer_1 = 0;
|
|
|
|
|
2015-01-11 20:12:51 +00:00
|
|
|
volatile uint8_t emul_reinitialize = 0;
|
2014-03-30 17:57:56 +00:00
|
|
|
pthread_t cpu_thread_id = 0;
|
2013-11-06 06:11:27 +00:00
|
|
|
|
2015-01-11 20:27:39 +00:00
|
|
|
static unsigned int g_nCyclesExecuted = 0; // # of cycles executed up to last IO access
|
2013-07-02 08:10:57 +00:00
|
|
|
|
2013-06-28 06:36:25 +00:00
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
|
2013-10-06 06:22:08 +00:00
|
|
|
struct timespec timespec_diff(struct timespec start, struct timespec end, bool *negative) {
|
2013-06-28 06:36:25 +00:00
|
|
|
struct timespec t;
|
|
|
|
|
2013-12-29 19:37:05 +00:00
|
|
|
if (negative)
|
2013-10-06 06:22:08 +00:00
|
|
|
{
|
|
|
|
*negative = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
// if start > end, swizzle...
|
|
|
|
if ( (start.tv_sec > end.tv_sec) || ((start.tv_sec == end.tv_sec) && (start.tv_nsec > end.tv_nsec)) )
|
|
|
|
{
|
|
|
|
t=start;
|
|
|
|
start=end;
|
|
|
|
end=t;
|
|
|
|
if (negative)
|
|
|
|
{
|
|
|
|
*negative = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-06-28 06:36:25 +00:00
|
|
|
// assuming time_t is signed ...
|
2013-07-06 04:37:13 +00:00
|
|
|
if (end.tv_nsec < start.tv_nsec)
|
|
|
|
{
|
2013-06-28 06:36:25 +00:00
|
|
|
t.tv_sec = end.tv_sec - start.tv_sec - 1;
|
2013-10-06 06:22:08 +00:00
|
|
|
t.tv_nsec = 1000000000 + end.tv_nsec - start.tv_nsec;
|
2013-07-06 04:37:13 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2013-06-28 06:36:25 +00:00
|
|
|
t.tv_sec = end.tv_sec - start.tv_sec;
|
|
|
|
t.tv_nsec = end.tv_nsec - start.tv_nsec;
|
|
|
|
}
|
|
|
|
|
|
|
|
return t;
|
|
|
|
}
|
|
|
|
|
2013-10-06 06:22:08 +00:00
|
|
|
static inline struct timespec timespec_add(struct timespec start, unsigned long nsecs) {
|
|
|
|
|
|
|
|
start.tv_nsec += nsecs;
|
|
|
|
if (start.tv_nsec > NANOSECONDS)
|
2013-07-22 00:20:03 +00:00
|
|
|
{
|
2013-10-06 06:22:08 +00:00
|
|
|
start.tv_sec += (start.tv_nsec / NANOSECONDS);
|
|
|
|
start.tv_nsec %= NANOSECONDS;
|
2013-07-22 00:20:03 +00:00
|
|
|
}
|
2013-10-06 06:22:08 +00:00
|
|
|
|
|
|
|
return start;
|
2013-07-22 00:20:03 +00:00
|
|
|
}
|
|
|
|
|
2013-10-06 08:31:58 +00:00
|
|
|
static void _timing_initialize(double scale)
|
2013-07-22 00:20:03 +00:00
|
|
|
{
|
2013-10-06 08:31:58 +00:00
|
|
|
if (g_bFullSpeed)
|
|
|
|
{
|
2015-01-11 20:12:51 +00:00
|
|
|
TIMING_LOG("timing_initialize() emulation at fullspeed ...");
|
2013-10-06 08:31:58 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
g_fCurrentCLK6502 = CLK_6502 * scale;
|
|
|
|
// this is extracted out of SetClksPerSpkrSample -- speaker.c
|
2014-03-23 21:25:28 +00:00
|
|
|
#ifdef AUDIO_ENABLED
|
2013-10-06 08:31:58 +00:00
|
|
|
g_fClksPerSpkrSample = (double) (UINT) (g_fCurrentCLK6502 / (double)SPKR_SAMPLE_RATE);
|
|
|
|
SpkrReinitialize();
|
|
|
|
|
2015-01-11 20:12:51 +00:00
|
|
|
TIMING_LOG("timing_initialize() ... ClockRate:%0.2lf ClockCyclesPerSpeakerSample:%0.2lf", g_fCurrentCLK6502, g_fClksPerSpkrSample);
|
2014-03-23 21:25:28 +00:00
|
|
|
#endif
|
2013-07-22 00:20:03 +00:00
|
|
|
}
|
|
|
|
|
2015-01-11 20:12:51 +00:00
|
|
|
static inline void _switch_to_fullspeed(void)
|
2013-10-06 06:22:08 +00:00
|
|
|
{
|
2015-01-11 20:12:51 +00:00
|
|
|
g_bFullSpeed = true;
|
2013-06-28 06:36:25 +00:00
|
|
|
}
|
|
|
|
|
2015-01-11 20:12:51 +00:00
|
|
|
static inline void _switch_to_regular_speed(double scale)
|
2013-07-22 00:20:03 +00:00
|
|
|
{
|
2015-01-11 20:12:51 +00:00
|
|
|
g_bFullSpeed = false;
|
2013-10-06 08:31:58 +00:00
|
|
|
_timing_initialize(scale);
|
2013-06-28 06:36:25 +00:00
|
|
|
}
|
|
|
|
|
2015-01-11 20:12:51 +00:00
|
|
|
void timing_toggle_cpu_speed(void)
|
2013-07-22 00:20:03 +00:00
|
|
|
{
|
2013-10-06 08:31:58 +00:00
|
|
|
alt_speed_enabled = !alt_speed_enabled;
|
2015-01-11 20:12:51 +00:00
|
|
|
double scale_factor = alt_speed_enabled ? cpu_altscale_factor : cpu_scale_factor;
|
|
|
|
if (scale_factor >= CPU_SCALE_FASTEST)
|
2013-07-22 00:20:03 +00:00
|
|
|
{
|
2015-01-11 20:12:51 +00:00
|
|
|
_switch_to_fullspeed();
|
2013-07-22 00:20:03 +00:00
|
|
|
}
|
2013-10-06 08:31:58 +00:00
|
|
|
else
|
|
|
|
{
|
2015-01-11 20:12:51 +00:00
|
|
|
_switch_to_regular_speed(scale_factor);
|
2013-10-06 08:31:58 +00:00
|
|
|
}
|
|
|
|
}
|
2013-07-26 05:58:31 +00:00
|
|
|
|
2015-01-11 20:12:51 +00:00
|
|
|
void timing_initialize(void)
|
2013-10-06 08:31:58 +00:00
|
|
|
{
|
|
|
|
_timing_initialize(cpu_scale_factor);
|
2013-10-06 06:22:08 +00:00
|
|
|
}
|
|
|
|
|
2014-09-17 03:39:08 +00:00
|
|
|
void *cpu_thread(void *dummyptr) {
|
2014-03-30 17:57:56 +00:00
|
|
|
|
|
|
|
assert(pthread_self() == cpu_thread_id);
|
|
|
|
|
2013-10-06 06:22:08 +00:00
|
|
|
struct timespec deltat;
|
|
|
|
struct timespec t0; // the target timer
|
|
|
|
struct timespec ti, tj; // actual time samples
|
|
|
|
bool negative = false;
|
2014-03-22 18:24:57 +00:00
|
|
|
long drift_adj_nsecs = 0; // generic drift adjustment between target and actual
|
|
|
|
|
|
|
|
int debugging_cycles0 = 0;
|
|
|
|
int debugging_cycles = 0;
|
2013-07-23 07:33:29 +00:00
|
|
|
|
2015-01-11 20:12:51 +00:00
|
|
|
#if DEBUG_TIMING
|
2013-10-06 06:22:08 +00:00
|
|
|
unsigned long dbg_ticks = 0;
|
2013-11-17 23:01:23 +00:00
|
|
|
int speaker_neg_feedback = 0;
|
|
|
|
int speaker_pos_feedback = 0;
|
2013-12-29 19:39:34 +00:00
|
|
|
unsigned int dbg_cycles_executed = 0;
|
2013-11-17 23:01:23 +00:00
|
|
|
#endif
|
2013-07-23 07:33:29 +00:00
|
|
|
|
2013-10-06 06:22:08 +00:00
|
|
|
do
|
2013-07-22 00:20:03 +00:00
|
|
|
{
|
2013-10-06 06:22:08 +00:00
|
|
|
g_nCumulativeCycles = 0;
|
2013-10-07 04:01:00 +00:00
|
|
|
LOG("cpu_thread : begin main loop ...");
|
2013-10-06 06:22:08 +00:00
|
|
|
|
|
|
|
clock_gettime(CLOCK_MONOTONIC, &t0);
|
2013-11-06 06:11:27 +00:00
|
|
|
|
|
|
|
emul_reinitialize = 1;
|
2013-10-06 06:22:08 +00:00
|
|
|
do {
|
|
|
|
// -LOCK----------------------------------------------------------------------------------------- SAMPLE ti
|
|
|
|
pthread_mutex_lock(&interface_mutex);
|
|
|
|
clock_gettime(CLOCK_MONOTONIC, &ti);
|
|
|
|
|
|
|
|
deltat = timespec_diff(t0, ti, &negative);
|
|
|
|
if (deltat.tv_sec)
|
|
|
|
{
|
2015-01-11 20:12:51 +00:00
|
|
|
TIMING_LOG("NOTE : serious divergence from target time ...");
|
2013-10-06 06:22:08 +00:00
|
|
|
t0 = ti;
|
|
|
|
deltat = timespec_diff(t0, ti, &negative);
|
|
|
|
}
|
|
|
|
t0 = timespec_add(t0, EXECUTION_PERIOD_NSECS); // expected interval
|
|
|
|
drift_adj_nsecs = negative ? ~deltat.tv_nsec : deltat.tv_nsec;
|
|
|
|
|
|
|
|
// set up increment & decrement counters
|
|
|
|
cpu65_cycles_to_execute = (g_fCurrentCLK6502 / 1000); // g_fCurrentCLK6502 * EXECUTION_PERIOD_NSECS / NANOSECONDS
|
|
|
|
cpu65_cycles_to_execute += g_nCpuCyclesFeedback;
|
|
|
|
if (cpu65_cycles_to_execute < 0)
|
|
|
|
{
|
|
|
|
cpu65_cycles_to_execute = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
g_nCyclesExecuted = 0;
|
2013-11-06 06:11:27 +00:00
|
|
|
|
2014-01-23 04:42:34 +00:00
|
|
|
#ifdef AUDIO_ENABLED
|
2013-11-06 06:11:27 +00:00
|
|
|
MB_StartOfCpuExecute();
|
2014-01-23 04:42:34 +00:00
|
|
|
#endif
|
2014-03-22 18:24:57 +00:00
|
|
|
if (is_debugging) {
|
|
|
|
debugging_cycles0 = cpu65_cycles_to_execute;
|
|
|
|
debugging_cycles = cpu65_cycles_to_execute;
|
|
|
|
}
|
2013-10-06 06:22:08 +00:00
|
|
|
|
2014-03-22 18:24:57 +00:00
|
|
|
do {
|
|
|
|
if (is_debugging) {
|
|
|
|
cpu65_cycles_to_execute = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
cpu65_cycle_count = 0;
|
|
|
|
cpu65_run(); // run emulation for cpu65_cycles_to_execute cycles ...
|
|
|
|
|
|
|
|
if (is_debugging) {
|
|
|
|
debugging_cycles -= cpu65_cycle_count;
|
|
|
|
if (c_debugger_should_break() || (debugging_cycles <= 0)) {
|
|
|
|
int err = 0;
|
2014-03-30 18:17:12 +00:00
|
|
|
if ((err = pthread_cond_signal(&ui_thread_cond))) {
|
2014-03-22 18:24:57 +00:00
|
|
|
ERRLOG("pthread_cond_signal : %d", err);
|
|
|
|
}
|
2014-03-30 18:17:12 +00:00
|
|
|
if ((err = pthread_cond_wait(&cpu_thread_cond, &interface_mutex))) {
|
2014-03-22 18:24:57 +00:00
|
|
|
ERRLOG("pthread_cond_wait : %d", err);
|
|
|
|
}
|
|
|
|
if (debugging_cycles <= 0) {
|
|
|
|
cpu65_cycle_count = debugging_cycles0 - debugging_cycles/*<=0*/;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2014-04-28 18:40:51 +00:00
|
|
|
if (emul_reinitialize) {
|
|
|
|
reinitialize();
|
|
|
|
}
|
2014-03-22 18:24:57 +00:00
|
|
|
} while (is_debugging);
|
2015-01-11 20:12:51 +00:00
|
|
|
#if DEBUG_TIMING
|
2013-12-29 19:39:34 +00:00
|
|
|
dbg_cycles_executed += cpu65_cycle_count;
|
|
|
|
#endif
|
2015-01-10 17:53:38 +00:00
|
|
|
unsigned int uActualCyclesExecuted = cpu65_cycle_count;
|
|
|
|
g_dwCyclesThisFrame += uActualCyclesExecuted;
|
2013-10-06 06:22:08 +00:00
|
|
|
|
2015-01-11 20:27:39 +00:00
|
|
|
#ifdef AUDIO_ENABLED
|
2015-01-10 17:53:38 +00:00
|
|
|
MB_UpdateCycles(uActualCyclesExecuted); // Update 6522s (NB. Do this before updating g_nCumulativeCycles below)
|
2015-01-11 20:27:39 +00:00
|
|
|
#endif
|
2013-10-06 06:22:08 +00:00
|
|
|
|
|
|
|
// N.B.: IO calls that depend on accurate timing will update g_nCyclesExecuted
|
2015-01-11 20:27:39 +00:00
|
|
|
const int nRemainingCycles = uActualCyclesExecuted - g_nCyclesExecuted;
|
|
|
|
assert(nRemainingCycles >= 0);
|
2013-10-06 06:22:08 +00:00
|
|
|
g_nCumulativeCycles += nRemainingCycles;
|
|
|
|
|
|
|
|
if (!g_bFullSpeed)
|
|
|
|
{
|
2015-01-11 20:27:39 +00:00
|
|
|
#ifdef AUDIO_ENABLED
|
2015-01-10 17:53:38 +00:00
|
|
|
SpkrUpdate(uActualCyclesExecuted); // play audio
|
|
|
|
#endif
|
2015-01-11 20:27:39 +00:00
|
|
|
}
|
2013-10-06 06:22:08 +00:00
|
|
|
|
2015-01-10 17:53:38 +00:00
|
|
|
if (g_dwCyclesThisFrame >= dwClksPerFrame)
|
|
|
|
{
|
|
|
|
g_dwCyclesThisFrame -= dwClksPerFrame;
|
|
|
|
//VideoEndOfVideoFrame();
|
|
|
|
#ifdef AUDIO_ENABLED
|
|
|
|
MB_EndOfVideoFrame();
|
2014-01-23 04:42:34 +00:00
|
|
|
#endif
|
2015-01-10 17:53:38 +00:00
|
|
|
}
|
2013-11-06 06:11:27 +00:00
|
|
|
|
2013-10-06 06:22:08 +00:00
|
|
|
clock_gettime(CLOCK_MONOTONIC, &tj);
|
|
|
|
pthread_mutex_unlock(&interface_mutex);
|
|
|
|
// -UNLOCK--------------------------------------------------------------------------------------- SAMPLE tj
|
|
|
|
|
2015-01-11 20:27:39 +00:00
|
|
|
if (auto_adjust_speed) {
|
|
|
|
deltat = timespec_diff(disk6.motor_time, tj, &negative);
|
|
|
|
assert(!negative);
|
|
|
|
if (!g_bFullSpeed &&
|
|
|
|
#ifdef AUDIO_ENABLED
|
|
|
|
!Spkr_IsActive() &&
|
|
|
|
#endif
|
|
|
|
!video_dirty() && (!disk6.motor_off && (deltat.tv_sec || deltat.tv_nsec > DISK_MOTOR_QUIET_NSECS)) )
|
|
|
|
{
|
|
|
|
TIMING_LOG("auto switching to full speed");
|
|
|
|
_switch_to_fullspeed();
|
|
|
|
} else if (g_bFullSpeed && (
|
|
|
|
#ifdef AUDIO_ENABLED
|
|
|
|
Spkr_IsActive() ||
|
|
|
|
#endif
|
|
|
|
video_dirty() || (disk6.motor_off && (deltat.tv_sec || deltat.tv_nsec > DISK_MOTOR_QUIET_NSECS))) )
|
|
|
|
{
|
|
|
|
TIMING_LOG("auto switching to regular speed");
|
|
|
|
_switch_to_regular_speed(alt_speed_enabled ? cpu_altscale_factor : cpu_scale_factor);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-01-11 20:12:51 +00:00
|
|
|
if (!g_bFullSpeed) {
|
|
|
|
deltat = timespec_diff(ti, tj, &negative);
|
|
|
|
assert(!negative);
|
|
|
|
long sleepfor = 0;
|
|
|
|
if (!deltat.tv_sec)
|
2013-10-06 06:22:08 +00:00
|
|
|
{
|
2015-01-11 20:12:51 +00:00
|
|
|
sleepfor = EXECUTION_PERIOD_NSECS - drift_adj_nsecs - deltat.tv_nsec;
|
2013-10-06 06:22:08 +00:00
|
|
|
}
|
|
|
|
|
2015-01-11 20:12:51 +00:00
|
|
|
if (sleepfor <= 0)
|
|
|
|
{
|
|
|
|
// lagging ...
|
|
|
|
static time_t throttle_warning = 0;
|
|
|
|
if (t0.tv_sec - throttle_warning > 0)
|
|
|
|
{
|
|
|
|
TIMING_LOG("lagging... %ld . %ld", deltat.tv_sec, deltat.tv_nsec);
|
|
|
|
throttle_warning = t0.tv_sec;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
deltat.tv_sec = 0;
|
|
|
|
deltat.tv_nsec = sleepfor;
|
|
|
|
nanosleep(&deltat, NULL);
|
|
|
|
}
|
2013-11-17 23:01:23 +00:00
|
|
|
|
2015-01-11 20:12:51 +00:00
|
|
|
#if DEBUG_TIMING
|
|
|
|
// collect timing statistics
|
|
|
|
if (speaker_neg_feedback > g_nCpuCyclesFeedback)
|
|
|
|
{
|
|
|
|
speaker_neg_feedback = g_nCpuCyclesFeedback;
|
|
|
|
}
|
|
|
|
if (speaker_pos_feedback < g_nCpuCyclesFeedback)
|
|
|
|
{
|
|
|
|
speaker_pos_feedback = g_nCpuCyclesFeedback;
|
|
|
|
}
|
2013-11-17 23:01:23 +00:00
|
|
|
|
2015-01-11 20:12:51 +00:00
|
|
|
dbg_ticks += EXECUTION_PERIOD_NSECS;
|
|
|
|
if ((dbg_ticks % NANOSECONDS) == 0)
|
|
|
|
{
|
|
|
|
LOG("tick:(%ld.%ld) real:(%ld.%ld) cycles exe: %d ... speaker feedback: %d/%d", t0.tv_sec, t0.tv_nsec, ti.tv_sec, ti.tv_nsec, dbg_cycles_executed, speaker_neg_feedback, speaker_pos_feedback);
|
|
|
|
dbg_cycles_executed = 0;
|
|
|
|
dbg_ticks = 0;
|
|
|
|
speaker_neg_feedback = 0;
|
|
|
|
speaker_pos_feedback = 0;
|
|
|
|
}
|
2013-10-06 06:22:08 +00:00
|
|
|
#endif
|
2015-01-11 20:12:51 +00:00
|
|
|
}
|
2013-11-06 06:11:27 +00:00
|
|
|
} while (!emul_reinitialize);
|
2013-10-06 06:22:08 +00:00
|
|
|
|
|
|
|
reinitialize();
|
|
|
|
} while (1);
|
2014-09-17 03:39:08 +00:00
|
|
|
|
|
|
|
return NULL;
|
2013-10-06 06:22:08 +00:00
|
|
|
}
|
2013-07-26 05:58:31 +00:00
|
|
|
|
2013-10-06 06:22:08 +00:00
|
|
|
// From AppleWin...
|
2015-01-10 17:53:38 +00:00
|
|
|
|
|
|
|
unsigned int CpuGetCyclesThisVideoFrame(const unsigned int nExecutedCycles) {
|
|
|
|
CpuCalcCycles(nExecutedCycles);
|
|
|
|
return g_dwCyclesThisFrame + g_nCyclesExecuted;
|
|
|
|
}
|
|
|
|
|
2013-10-06 06:22:08 +00:00
|
|
|
// Called when an IO-reg is accessed & accurate cycle info is needed
|
2015-01-10 17:53:38 +00:00
|
|
|
void CpuCalcCycles(const unsigned long nExecutedCycles) {
|
2013-10-06 06:22:08 +00:00
|
|
|
// Calc # of cycles executed since this func was last called
|
|
|
|
const long nCycles = nExecutedCycles - g_nCyclesExecuted;
|
|
|
|
assert(nCycles >= 0);
|
|
|
|
g_nCumulativeCycles += nCycles;
|
2014-06-21 21:55:30 +00:00
|
|
|
// HACK FIXME TODO
|
|
|
|
#pragma clang diagnostic push
|
2014-10-25 15:44:21 +00:00
|
|
|
#pragma clang diagnostic ignored "-Wshorten-64-to-32"
|
2013-10-06 06:22:08 +00:00
|
|
|
g_nCyclesExecuted = nExecutedCycles;
|
2014-06-21 21:55:30 +00:00
|
|
|
#pragma clang diagnostic pop
|
2013-06-28 06:36:25 +00:00
|
|
|
}
|
2013-07-22 00:20:03 +00:00
|
|
|
|