1 |
cebix |
1.1 |
/* |
2 |
|
|
* C64_x.h - Put the pieces together, X specific stuff |
3 |
|
|
* |
4 |
cebix |
1.7 |
* Frodo (C) 1994-1997,2002-2004 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 "main.h" |
22 |
|
|
|
23 |
|
|
|
24 |
|
|
static struct timeval tv_start; |
25 |
|
|
|
26 |
|
|
#ifndef HAVE_USLEEP |
27 |
|
|
/* |
28 |
|
|
* NAME: |
29 |
|
|
* usleep -- This is the precision timer for Test Set |
30 |
|
|
* Automation. It uses the select(2) system |
31 |
|
|
* call to delay for the desired number of |
32 |
|
|
* micro-seconds. This call returns ZERO |
33 |
|
|
* (which is usually ignored) on successful |
34 |
|
|
* completion, -1 otherwise. |
35 |
|
|
* |
36 |
|
|
* ALGORITHM: |
37 |
|
|
* 1) We range check the passed in microseconds and log a |
38 |
|
|
* warning message if appropriate. We then return without |
39 |
|
|
* delay, flagging an error. |
40 |
|
|
* 2) Load the Seconds and micro-seconds portion of the |
41 |
|
|
* interval timer structure. |
42 |
|
|
* 3) Call select(2) with no file descriptors set, just the |
43 |
|
|
* timer, this results in either delaying the proper |
44 |
|
|
* ammount of time or being interupted early by a signal. |
45 |
|
|
* |
46 |
|
|
* HISTORY: |
47 |
|
|
* Added when the need for a subsecond timer was evident. |
48 |
|
|
* |
49 |
|
|
* AUTHOR: |
50 |
|
|
* Michael J. Dyer Telephone: AT&T 414.647.4044 |
51 |
|
|
* General Electric Medical Systems GE DialComm 8 *767.4044 |
52 |
|
|
* P.O. Box 414 Mail Stop 12-27 Sect'y AT&T 414.647.4584 |
53 |
|
|
* Milwaukee, Wisconsin USA 53201 8 *767.4584 |
54 |
|
|
* internet: mike@sherlock.med.ge.com GEMS WIZARD e-mail: DYER |
55 |
|
|
*/ |
56 |
|
|
|
57 |
|
|
#include <unistd.h> |
58 |
|
|
#include <stdlib.h> |
59 |
|
|
#include <stdio.h> |
60 |
|
|
#include <errno.h> |
61 |
|
|
#include <time.h> |
62 |
|
|
#include <sys/time.h> |
63 |
|
|
#include <sys/param.h> |
64 |
|
|
#include <sys/types.h> |
65 |
|
|
|
66 |
|
|
int usleep(unsigned long int microSeconds) |
67 |
|
|
{ |
68 |
|
|
unsigned int Seconds, uSec; |
69 |
|
|
int nfds, readfds, writefds, exceptfds; |
70 |
|
|
struct timeval Timer; |
71 |
|
|
|
72 |
|
|
nfds = readfds = writefds = exceptfds = 0; |
73 |
|
|
|
74 |
|
|
if( (microSeconds == (unsigned long) 0) |
75 |
|
|
|| microSeconds > (unsigned long) 4000000 ) |
76 |
|
|
{ |
77 |
|
|
errno = ERANGE; /* value out of range */ |
78 |
|
|
perror( "usleep time out of range ( 0 -> 4000000 ) " ); |
79 |
|
|
return -1; |
80 |
|
|
} |
81 |
|
|
|
82 |
|
|
Seconds = microSeconds / (unsigned long) 1000000; |
83 |
|
|
uSec = microSeconds % (unsigned long) 1000000; |
84 |
|
|
|
85 |
|
|
Timer.tv_sec = Seconds; |
86 |
|
|
Timer.tv_usec = uSec; |
87 |
|
|
|
88 |
|
|
if( select( nfds, &readfds, &writefds, &exceptfds, &Timer ) < 0 ) |
89 |
|
|
{ |
90 |
|
|
perror( "usleep (select) failed" ); |
91 |
|
|
return -1; |
92 |
|
|
} |
93 |
|
|
|
94 |
|
|
return 0; |
95 |
|
|
} |
96 |
|
|
#endif |
97 |
|
|
|
98 |
cebix |
1.6 |
#ifdef __linux__ |
99 |
|
|
// select() timing is much more accurate under Linux |
100 |
|
|
static void Delay_usec(unsigned long usec) |
101 |
|
|
{ |
102 |
|
|
int was_error; |
103 |
|
|
struct timeval tv; |
104 |
|
|
|
105 |
|
|
tv.tv_sec = 0; |
106 |
|
|
tv.tv_usec = usec; |
107 |
|
|
do { |
108 |
|
|
errno = 0; |
109 |
|
|
was_error = select(0, NULL, NULL, NULL, &tv); |
110 |
|
|
} while (was_error && (errno == EINTR)); |
111 |
|
|
} |
112 |
|
|
#else |
113 |
|
|
static void Delay_usec(unsigned long usec) |
114 |
|
|
{ |
115 |
|
|
usleep(usec); |
116 |
|
|
} |
117 |
|
|
#endif |
118 |
|
|
|
119 |
cebix |
1.1 |
|
120 |
|
|
/* |
121 |
|
|
* Constructor, system-dependent things |
122 |
|
|
*/ |
123 |
|
|
|
124 |
|
|
void C64::c64_ctor1(void) |
125 |
|
|
{ |
126 |
|
|
// Initialize joystick variables |
127 |
cebix |
1.5 |
joy_minx[0] = joy_miny[0] = 32767; |
128 |
|
|
joy_maxx[0] = joy_maxy[0] = -32768; |
129 |
|
|
joy_minx[1] = joy_miny[1] = 32767; |
130 |
|
|
joy_maxx[1] = joy_maxy[1] = -32768; |
131 |
cebix |
1.1 |
|
132 |
|
|
// we need to create a potential GUI subprocess here, because we don't want |
133 |
|
|
// it to inherit file-descriptors (such as for the audio-device and alike..) |
134 |
|
|
#if defined(__svgalib__) |
135 |
|
|
gui = 0; |
136 |
|
|
#else |
137 |
|
|
// try to start up Tk gui. |
138 |
cebix |
1.3 |
gui = new CmdPipe("wish", BINDIR "Frodo_GUI.tcl"); |
139 |
cebix |
1.1 |
if (gui) { |
140 |
|
|
if (gui->fail) { |
141 |
|
|
delete gui; gui = 0; |
142 |
|
|
} |
143 |
|
|
} |
144 |
|
|
// wait until the GUI process responds (if it does...) |
145 |
|
|
if (gui) { |
146 |
|
|
if (5 != gui->ewrite("ping\n",5)) { |
147 |
|
|
delete gui; gui = 0; |
148 |
|
|
} else { |
149 |
|
|
char c; |
150 |
|
|
fd_set set; |
151 |
|
|
FD_ZERO(&set); |
152 |
|
|
FD_SET(gui->get_read_fd(), &set); |
153 |
|
|
struct timeval tv; |
154 |
|
|
tv.tv_usec = 0; |
155 |
|
|
tv.tv_sec = 5; |
156 |
|
|
// Use the following commented line for HP-UX < 10.20 |
157 |
|
|
// if (select(FD_SETSIZE, (int *)&set, (int *)NULL, (int *)NULL, &tv) <= 0) { |
158 |
|
|
if (select(FD_SETSIZE, &set, NULL, NULL, &tv) <= 0) { |
159 |
|
|
delete gui; gui = 0; |
160 |
|
|
} else { |
161 |
|
|
if (1 != gui->eread(&c, 1)) { |
162 |
|
|
delete gui; gui = 0; |
163 |
|
|
} else { |
164 |
|
|
if (c != 'o') { |
165 |
|
|
delete gui; gui = 0; |
166 |
|
|
} |
167 |
|
|
} |
168 |
|
|
} |
169 |
|
|
} |
170 |
|
|
} |
171 |
|
|
#endif // __svgalib__ |
172 |
|
|
} |
173 |
|
|
|
174 |
|
|
void C64::c64_ctor2(void) |
175 |
|
|
{ |
176 |
|
|
#ifndef __svgalib__ |
177 |
|
|
if (!gui) { |
178 |
|
|
fprintf(stderr,"Alas, master, no preferences window will be available.\n" |
179 |
|
|
"If you wish to see one, make sure the 'wish' interpreter\n" |
180 |
|
|
"(Tk version >= 4.1) is installed in your path.\n" |
181 |
|
|
"You can still use Frodo, though. Use F10 to quit, \n" |
182 |
|
|
"F11 to cause an NMI and F12 to reset the C64.\n" |
183 |
|
|
"You can change the preferences by editing ~/.frodorc\n"); |
184 |
|
|
} |
185 |
|
|
#endif // SVGAlib |
186 |
|
|
|
187 |
|
|
gettimeofday(&tv_start, NULL); |
188 |
|
|
} |
189 |
|
|
|
190 |
|
|
|
191 |
|
|
/* |
192 |
|
|
* Destructor, system-dependent things |
193 |
|
|
*/ |
194 |
|
|
|
195 |
|
|
void C64::c64_dtor(void) |
196 |
|
|
{ |
197 |
|
|
} |
198 |
|
|
|
199 |
|
|
|
200 |
|
|
/* |
201 |
|
|
* Start main emulation thread |
202 |
|
|
*/ |
203 |
|
|
|
204 |
|
|
void C64::Run(void) |
205 |
|
|
{ |
206 |
|
|
// Reset chips |
207 |
|
|
TheCPU->Reset(); |
208 |
|
|
TheSID->Reset(); |
209 |
|
|
TheCIA1->Reset(); |
210 |
|
|
TheCIA2->Reset(); |
211 |
|
|
TheCPU1541->Reset(); |
212 |
|
|
|
213 |
|
|
// Patch kernal IEC routines |
214 |
|
|
orig_kernal_1d84 = Kernal[0x1d84]; |
215 |
|
|
orig_kernal_1d85 = Kernal[0x1d85]; |
216 |
|
|
PatchKernal(ThePrefs.FastReset, ThePrefs.Emul1541Proc); |
217 |
|
|
|
218 |
|
|
quit_thyself = false; |
219 |
|
|
thread_func(); |
220 |
|
|
} |
221 |
|
|
|
222 |
|
|
|
223 |
|
|
/* |
224 |
|
|
* Vertical blank: Poll keyboard and joysticks, update window |
225 |
|
|
*/ |
226 |
|
|
|
227 |
|
|
void C64::VBlank(bool draw_frame) |
228 |
|
|
{ |
229 |
|
|
// Poll keyboard |
230 |
|
|
TheDisplay->PollKeyboard(TheCIA1->KeyMatrix, TheCIA1->RevMatrix, &joykey); |
231 |
|
|
if (TheDisplay->quit_requested) |
232 |
|
|
quit_thyself = true; |
233 |
|
|
|
234 |
|
|
// Poll joysticks |
235 |
|
|
TheCIA1->Joystick1 = poll_joystick(0); |
236 |
|
|
TheCIA1->Joystick2 = poll_joystick(1); |
237 |
|
|
|
238 |
|
|
if (ThePrefs.JoystickSwap) { |
239 |
|
|
uint8 tmp = TheCIA1->Joystick1; |
240 |
|
|
TheCIA1->Joystick1 = TheCIA1->Joystick2; |
241 |
|
|
TheCIA1->Joystick2 = tmp; |
242 |
|
|
} |
243 |
|
|
|
244 |
|
|
// Joystick keyboard emulation |
245 |
|
|
if (TheDisplay->NumLock()) |
246 |
|
|
TheCIA1->Joystick1 &= joykey; |
247 |
|
|
else |
248 |
|
|
TheCIA1->Joystick2 &= joykey; |
249 |
|
|
|
250 |
|
|
// Count TOD clocks |
251 |
|
|
TheCIA1->CountTOD(); |
252 |
|
|
TheCIA2->CountTOD(); |
253 |
|
|
|
254 |
|
|
// Update window if needed |
255 |
|
|
if (draw_frame) { |
256 |
|
|
TheDisplay->Update(); |
257 |
|
|
|
258 |
|
|
// Calculate time between VBlanks, display speedometer |
259 |
|
|
struct timeval tv; |
260 |
|
|
gettimeofday(&tv, NULL); |
261 |
|
|
if ((tv.tv_usec -= tv_start.tv_usec) < 0) { |
262 |
|
|
tv.tv_usec += 1000000; |
263 |
|
|
tv.tv_sec -= 1; |
264 |
|
|
} |
265 |
|
|
tv.tv_sec -= tv_start.tv_sec; |
266 |
|
|
double elapsed_time = (double)tv.tv_sec * 1000000 + tv.tv_usec; |
267 |
|
|
speed_index = 20000 / (elapsed_time + 1) * ThePrefs.SkipFrames * 100; |
268 |
|
|
|
269 |
|
|
// Limit speed to 100% if desired |
270 |
|
|
if ((speed_index > 100) && ThePrefs.LimitSpeed) { |
271 |
cebix |
1.6 |
Delay_usec((unsigned long)(ThePrefs.SkipFrames * 20000 - elapsed_time)); |
272 |
cebix |
1.1 |
speed_index = 100; |
273 |
|
|
} |
274 |
|
|
|
275 |
|
|
gettimeofday(&tv_start, NULL); |
276 |
|
|
|
277 |
|
|
TheDisplay->Speedometer((int)speed_index); |
278 |
|
|
} |
279 |
|
|
} |
280 |
|
|
|
281 |
|
|
|
282 |
|
|
/* |
283 |
|
|
* The emulation's main loop |
284 |
|
|
*/ |
285 |
|
|
|
286 |
|
|
void C64::thread_func(void) |
287 |
|
|
{ |
288 |
|
|
int linecnt = 0; |
289 |
|
|
|
290 |
|
|
#ifdef FRODO_SC |
291 |
|
|
while (!quit_thyself) { |
292 |
|
|
|
293 |
|
|
// The order of calls is important here |
294 |
|
|
if (TheVIC->EmulateCycle()) |
295 |
|
|
TheSID->EmulateLine(); |
296 |
|
|
TheCIA1->CheckIRQs(); |
297 |
|
|
TheCIA2->CheckIRQs(); |
298 |
|
|
TheCIA1->EmulateCycle(); |
299 |
|
|
TheCIA2->EmulateCycle(); |
300 |
|
|
TheCPU->EmulateCycle(); |
301 |
|
|
|
302 |
|
|
if (ThePrefs.Emul1541Proc) { |
303 |
|
|
TheCPU1541->CountVIATimers(1); |
304 |
|
|
if (!TheCPU1541->Idle) |
305 |
|
|
TheCPU1541->EmulateCycle(); |
306 |
|
|
} |
307 |
|
|
CycleCounter++; |
308 |
|
|
#else |
309 |
|
|
while (!quit_thyself) { |
310 |
|
|
|
311 |
|
|
// The order of calls is important here |
312 |
|
|
int cycles = TheVIC->EmulateLine(); |
313 |
|
|
TheSID->EmulateLine(); |
314 |
|
|
#if !PRECISE_CIA_CYCLES |
315 |
|
|
TheCIA1->EmulateLine(ThePrefs.CIACycles); |
316 |
|
|
TheCIA2->EmulateLine(ThePrefs.CIACycles); |
317 |
|
|
#endif |
318 |
|
|
|
319 |
|
|
if (ThePrefs.Emul1541Proc) { |
320 |
|
|
int cycles_1541 = ThePrefs.FloppyCycles; |
321 |
|
|
TheCPU1541->CountVIATimers(cycles_1541); |
322 |
|
|
|
323 |
|
|
if (!TheCPU1541->Idle) { |
324 |
|
|
// 1541 processor active, alternately execute |
325 |
|
|
// 6502 and 6510 instructions until both have |
326 |
|
|
// used up their cycles |
327 |
|
|
while (cycles >= 0 || cycles_1541 >= 0) |
328 |
|
|
if (cycles > cycles_1541) |
329 |
|
|
cycles -= TheCPU->EmulateLine(1); |
330 |
|
|
else |
331 |
|
|
cycles_1541 -= TheCPU1541->EmulateLine(1); |
332 |
|
|
} else |
333 |
|
|
TheCPU->EmulateLine(cycles); |
334 |
|
|
} else |
335 |
|
|
// 1541 processor disabled, only emulate 6510 |
336 |
|
|
TheCPU->EmulateLine(cycles); |
337 |
|
|
#endif |
338 |
|
|
linecnt++; |
339 |
|
|
#if !defined(__svgalib__) |
340 |
|
|
if ((linecnt & 0xfff) == 0 && gui) { |
341 |
|
|
|
342 |
|
|
// check for command from GUI process |
343 |
|
|
// fprintf(stderr,":"); |
344 |
|
|
while (gui->probe()) { |
345 |
|
|
char c; |
346 |
|
|
if (gui->eread(&c, 1) != 1) { |
347 |
|
|
delete gui; |
348 |
|
|
gui = 0; |
349 |
|
|
fprintf(stderr,"Oops, GUI process died...\n"); |
350 |
|
|
} else { |
351 |
|
|
// fprintf(stderr,"%c",c); |
352 |
|
|
switch (c) { |
353 |
|
|
case 'q': |
354 |
|
|
quit_thyself = true; |
355 |
|
|
break; |
356 |
|
|
case 'r': |
357 |
|
|
Reset(); |
358 |
|
|
break; |
359 |
|
|
case 'p':{ |
360 |
|
|
Prefs *np = Frodo::reload_prefs(); |
361 |
|
|
NewPrefs(np); |
362 |
|
|
ThePrefs = *np; |
363 |
|
|
break; |
364 |
|
|
} |
365 |
|
|
default: |
366 |
|
|
break; |
367 |
|
|
} |
368 |
|
|
} |
369 |
|
|
} |
370 |
|
|
} |
371 |
|
|
#endif |
372 |
|
|
} |
373 |
|
|
#if !defined(__svgalib__) |
374 |
|
|
if (gui) { |
375 |
|
|
gui->ewrite("quit\n",5); |
376 |
|
|
} |
377 |
|
|
#endif |
378 |
|
|
} |