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cebix |
1.1 |
/* |
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* C64_x.h - Put the pieces together, X specific stuff |
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* |
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cebix |
1.2 |
* Frodo (C) 1994-1997,2002-2003 Christian Bauer |
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cebix |
1.1 |
* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#include "main.h" |
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static struct timeval tv_start; |
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#ifndef HAVE_USLEEP |
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/* |
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* NAME: |
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* usleep -- This is the precision timer for Test Set |
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* Automation. It uses the select(2) system |
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* call to delay for the desired number of |
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* micro-seconds. This call returns ZERO |
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* (which is usually ignored) on successful |
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* completion, -1 otherwise. |
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* |
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* ALGORITHM: |
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* 1) We range check the passed in microseconds and log a |
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* warning message if appropriate. We then return without |
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* delay, flagging an error. |
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* 2) Load the Seconds and micro-seconds portion of the |
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* interval timer structure. |
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* 3) Call select(2) with no file descriptors set, just the |
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* timer, this results in either delaying the proper |
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* ammount of time or being interupted early by a signal. |
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* |
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* HISTORY: |
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* Added when the need for a subsecond timer was evident. |
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* |
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* AUTHOR: |
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* Michael J. Dyer Telephone: AT&T 414.647.4044 |
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* General Electric Medical Systems GE DialComm 8 *767.4044 |
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* P.O. Box 414 Mail Stop 12-27 Sect'y AT&T 414.647.4584 |
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* Milwaukee, Wisconsin USA 53201 8 *767.4584 |
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* internet: mike@sherlock.med.ge.com GEMS WIZARD e-mail: DYER |
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*/ |
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#include <unistd.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <errno.h> |
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#include <time.h> |
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#include <sys/time.h> |
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#include <sys/param.h> |
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#include <sys/types.h> |
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int usleep(unsigned long int microSeconds) |
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{ |
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unsigned int Seconds, uSec; |
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int nfds, readfds, writefds, exceptfds; |
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struct timeval Timer; |
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nfds = readfds = writefds = exceptfds = 0; |
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if( (microSeconds == (unsigned long) 0) |
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|| microSeconds > (unsigned long) 4000000 ) |
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{ |
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errno = ERANGE; /* value out of range */ |
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perror( "usleep time out of range ( 0 -> 4000000 ) " ); |
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return -1; |
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} |
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Seconds = microSeconds / (unsigned long) 1000000; |
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uSec = microSeconds % (unsigned long) 1000000; |
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Timer.tv_sec = Seconds; |
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Timer.tv_usec = uSec; |
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if( select( nfds, &readfds, &writefds, &exceptfds, &Timer ) < 0 ) |
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{ |
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perror( "usleep (select) failed" ); |
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return -1; |
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} |
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return 0; |
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} |
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#endif |
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/* |
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* Constructor, system-dependent things |
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*/ |
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void C64::c64_ctor1(void) |
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{ |
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// Initialize joystick variables |
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joyfd[0] = joyfd[1] = -1; |
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joy_minx = joy_miny = 32767; |
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joy_maxx = joy_maxy = -32768; |
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// we need to create a potential GUI subprocess here, because we don't want |
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// it to inherit file-descriptors (such as for the audio-device and alike..) |
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#if defined(__svgalib__) |
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gui = 0; |
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#else |
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// try to start up Tk gui. |
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cebix |
1.3 |
gui = new CmdPipe("wish", BINDIR "Frodo_GUI.tcl"); |
117 |
cebix |
1.1 |
if (gui) { |
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if (gui->fail) { |
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delete gui; gui = 0; |
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} |
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} |
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// wait until the GUI process responds (if it does...) |
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if (gui) { |
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if (5 != gui->ewrite("ping\n",5)) { |
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delete gui; gui = 0; |
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} else { |
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char c; |
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fd_set set; |
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FD_ZERO(&set); |
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FD_SET(gui->get_read_fd(), &set); |
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struct timeval tv; |
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tv.tv_usec = 0; |
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tv.tv_sec = 5; |
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// Use the following commented line for HP-UX < 10.20 |
135 |
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// if (select(FD_SETSIZE, (int *)&set, (int *)NULL, (int *)NULL, &tv) <= 0) { |
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if (select(FD_SETSIZE, &set, NULL, NULL, &tv) <= 0) { |
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delete gui; gui = 0; |
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} else { |
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if (1 != gui->eread(&c, 1)) { |
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delete gui; gui = 0; |
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} else { |
142 |
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if (c != 'o') { |
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delete gui; gui = 0; |
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} |
145 |
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} |
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} |
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} |
148 |
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} |
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#endif // __svgalib__ |
150 |
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} |
151 |
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152 |
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void C64::c64_ctor2(void) |
153 |
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{ |
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#ifndef __svgalib__ |
155 |
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if (!gui) { |
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fprintf(stderr,"Alas, master, no preferences window will be available.\n" |
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"If you wish to see one, make sure the 'wish' interpreter\n" |
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"(Tk version >= 4.1) is installed in your path.\n" |
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"You can still use Frodo, though. Use F10 to quit, \n" |
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"F11 to cause an NMI and F12 to reset the C64.\n" |
161 |
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"You can change the preferences by editing ~/.frodorc\n"); |
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} |
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#endif // SVGAlib |
164 |
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165 |
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gettimeofday(&tv_start, NULL); |
166 |
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} |
167 |
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168 |
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169 |
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/* |
170 |
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* Destructor, system-dependent things |
171 |
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*/ |
172 |
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173 |
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void C64::c64_dtor(void) |
174 |
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{ |
175 |
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} |
176 |
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177 |
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178 |
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/* |
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* Start main emulation thread |
180 |
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*/ |
181 |
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182 |
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void C64::Run(void) |
183 |
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{ |
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// Reset chips |
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TheCPU->Reset(); |
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TheSID->Reset(); |
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TheCIA1->Reset(); |
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TheCIA2->Reset(); |
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TheCPU1541->Reset(); |
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// Patch kernal IEC routines |
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orig_kernal_1d84 = Kernal[0x1d84]; |
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orig_kernal_1d85 = Kernal[0x1d85]; |
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PatchKernal(ThePrefs.FastReset, ThePrefs.Emul1541Proc); |
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196 |
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quit_thyself = false; |
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thread_func(); |
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} |
199 |
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200 |
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201 |
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/* |
202 |
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* Vertical blank: Poll keyboard and joysticks, update window |
203 |
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*/ |
204 |
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205 |
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void C64::VBlank(bool draw_frame) |
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{ |
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// Poll keyboard |
208 |
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TheDisplay->PollKeyboard(TheCIA1->KeyMatrix, TheCIA1->RevMatrix, &joykey); |
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if (TheDisplay->quit_requested) |
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quit_thyself = true; |
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212 |
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// Poll joysticks |
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TheCIA1->Joystick1 = poll_joystick(0); |
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TheCIA1->Joystick2 = poll_joystick(1); |
215 |
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216 |
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if (ThePrefs.JoystickSwap) { |
217 |
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uint8 tmp = TheCIA1->Joystick1; |
218 |
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TheCIA1->Joystick1 = TheCIA1->Joystick2; |
219 |
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TheCIA1->Joystick2 = tmp; |
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} |
221 |
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// Joystick keyboard emulation |
223 |
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if (TheDisplay->NumLock()) |
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TheCIA1->Joystick1 &= joykey; |
225 |
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else |
226 |
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TheCIA1->Joystick2 &= joykey; |
227 |
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228 |
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// Count TOD clocks |
229 |
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TheCIA1->CountTOD(); |
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TheCIA2->CountTOD(); |
231 |
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232 |
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// Update window if needed |
233 |
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if (draw_frame) { |
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TheDisplay->Update(); |
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236 |
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// Calculate time between VBlanks, display speedometer |
237 |
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struct timeval tv; |
238 |
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gettimeofday(&tv, NULL); |
239 |
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if ((tv.tv_usec -= tv_start.tv_usec) < 0) { |
240 |
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tv.tv_usec += 1000000; |
241 |
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tv.tv_sec -= 1; |
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} |
243 |
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tv.tv_sec -= tv_start.tv_sec; |
244 |
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double elapsed_time = (double)tv.tv_sec * 1000000 + tv.tv_usec; |
245 |
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speed_index = 20000 / (elapsed_time + 1) * ThePrefs.SkipFrames * 100; |
246 |
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247 |
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// Limit speed to 100% if desired |
248 |
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if ((speed_index > 100) && ThePrefs.LimitSpeed) { |
249 |
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usleep((unsigned long)(ThePrefs.SkipFrames * 20000 - elapsed_time)); |
250 |
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speed_index = 100; |
251 |
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} |
252 |
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253 |
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gettimeofday(&tv_start, NULL); |
254 |
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255 |
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TheDisplay->Speedometer((int)speed_index); |
256 |
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} |
257 |
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} |
258 |
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259 |
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260 |
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/* |
261 |
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* Open/close joystick drivers given old and new state of |
262 |
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* joystick preferences |
263 |
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*/ |
264 |
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265 |
cebix |
1.4 |
void C64::open_close_joysticks(int oldjoy1, int oldjoy2, int newjoy1, int newjoy2) |
266 |
cebix |
1.1 |
{ |
267 |
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#ifdef HAVE_LINUX_JOYSTICK_H |
268 |
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if (oldjoy1 != newjoy1) { |
269 |
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joy_minx = joy_miny = 32767; // Reset calibration |
270 |
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joy_maxx = joy_maxy = -32768; |
271 |
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if (newjoy1) { |
272 |
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joyfd[0] = open("/dev/js0", O_RDONLY); |
273 |
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if (joyfd[0] < 0) |
274 |
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fprintf(stderr, "Couldn't open joystick 1\n"); |
275 |
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} else { |
276 |
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close(joyfd[0]); |
277 |
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joyfd[0] = -1; |
278 |
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} |
279 |
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} |
280 |
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281 |
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if (oldjoy2 != newjoy2) { |
282 |
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joy_minx = joy_miny = 32767; // Reset calibration |
283 |
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joy_maxx = joy_maxy = -32768; |
284 |
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if (newjoy2) { |
285 |
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joyfd[1] = open("/dev/js1", O_RDONLY); |
286 |
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if (joyfd[1] < 0) |
287 |
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fprintf(stderr, "Couldn't open joystick 2\n"); |
288 |
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} else { |
289 |
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close(joyfd[1]); |
290 |
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joyfd[1] = -1; |
291 |
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} |
292 |
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} |
293 |
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#endif |
294 |
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} |
295 |
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296 |
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297 |
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/* |
298 |
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* Poll joystick port, return CIA mask |
299 |
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*/ |
300 |
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301 |
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uint8 C64::poll_joystick(int port) |
302 |
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{ |
303 |
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#ifdef HAVE_LINUX_JOYSTICK_H |
304 |
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JS_DATA_TYPE js; |
305 |
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uint8 j = 0xff; |
306 |
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307 |
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if (joyfd[port] >= 0) { |
308 |
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if (read(joyfd[port], &js, JS_RETURN) == JS_RETURN) { |
309 |
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if (js.x > joy_maxx) |
310 |
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joy_maxx = js.x; |
311 |
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if (js.x < joy_minx) |
312 |
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joy_minx = js.x; |
313 |
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if (js.y > joy_maxy) |
314 |
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joy_maxy = js.y; |
315 |
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if (js.y < joy_miny) |
316 |
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joy_miny = js.y; |
317 |
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318 |
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if (joy_maxx-joy_minx < 100 || joy_maxy-joy_miny < 100) |
319 |
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return 0xff; |
320 |
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321 |
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if (js.x < (joy_minx + (joy_maxx-joy_minx)/3)) |
322 |
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j &= 0xfb; // Left |
323 |
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else if (js.x > (joy_minx + 2*(joy_maxx-joy_minx)/3)) |
324 |
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j &= 0xf7; // Right |
325 |
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326 |
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if (js.y < (joy_miny + (joy_maxy-joy_miny)/3)) |
327 |
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j &= 0xfe; // Up |
328 |
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else if (js.y > (joy_miny + 2*(joy_maxy-joy_miny)/3)) |
329 |
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j &= 0xfd; // Down |
330 |
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331 |
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if (js.buttons & 1) |
332 |
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j &= 0xef; // Button |
333 |
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} |
334 |
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} |
335 |
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return j; |
336 |
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#else |
337 |
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return 0xff; |
338 |
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#endif |
339 |
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} |
340 |
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341 |
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342 |
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/* |
343 |
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* The emulation's main loop |
344 |
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*/ |
345 |
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|
346 |
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void C64::thread_func(void) |
347 |
|
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{ |
348 |
|
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int linecnt = 0; |
349 |
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|
350 |
|
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#ifdef FRODO_SC |
351 |
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while (!quit_thyself) { |
352 |
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353 |
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// The order of calls is important here |
354 |
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if (TheVIC->EmulateCycle()) |
355 |
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TheSID->EmulateLine(); |
356 |
|
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TheCIA1->CheckIRQs(); |
357 |
|
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TheCIA2->CheckIRQs(); |
358 |
|
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TheCIA1->EmulateCycle(); |
359 |
|
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TheCIA2->EmulateCycle(); |
360 |
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TheCPU->EmulateCycle(); |
361 |
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362 |
|
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if (ThePrefs.Emul1541Proc) { |
363 |
|
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TheCPU1541->CountVIATimers(1); |
364 |
|
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if (!TheCPU1541->Idle) |
365 |
|
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TheCPU1541->EmulateCycle(); |
366 |
|
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} |
367 |
|
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CycleCounter++; |
368 |
|
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#else |
369 |
|
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while (!quit_thyself) { |
370 |
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|
371 |
|
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// The order of calls is important here |
372 |
|
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int cycles = TheVIC->EmulateLine(); |
373 |
|
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TheSID->EmulateLine(); |
374 |
|
|
#if !PRECISE_CIA_CYCLES |
375 |
|
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TheCIA1->EmulateLine(ThePrefs.CIACycles); |
376 |
|
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TheCIA2->EmulateLine(ThePrefs.CIACycles); |
377 |
|
|
#endif |
378 |
|
|
|
379 |
|
|
if (ThePrefs.Emul1541Proc) { |
380 |
|
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int cycles_1541 = ThePrefs.FloppyCycles; |
381 |
|
|
TheCPU1541->CountVIATimers(cycles_1541); |
382 |
|
|
|
383 |
|
|
if (!TheCPU1541->Idle) { |
384 |
|
|
// 1541 processor active, alternately execute |
385 |
|
|
// 6502 and 6510 instructions until both have |
386 |
|
|
// used up their cycles |
387 |
|
|
while (cycles >= 0 || cycles_1541 >= 0) |
388 |
|
|
if (cycles > cycles_1541) |
389 |
|
|
cycles -= TheCPU->EmulateLine(1); |
390 |
|
|
else |
391 |
|
|
cycles_1541 -= TheCPU1541->EmulateLine(1); |
392 |
|
|
} else |
393 |
|
|
TheCPU->EmulateLine(cycles); |
394 |
|
|
} else |
395 |
|
|
// 1541 processor disabled, only emulate 6510 |
396 |
|
|
TheCPU->EmulateLine(cycles); |
397 |
|
|
#endif |
398 |
|
|
linecnt++; |
399 |
|
|
#if !defined(__svgalib__) |
400 |
|
|
if ((linecnt & 0xfff) == 0 && gui) { |
401 |
|
|
|
402 |
|
|
// check for command from GUI process |
403 |
|
|
// fprintf(stderr,":"); |
404 |
|
|
while (gui->probe()) { |
405 |
|
|
char c; |
406 |
|
|
if (gui->eread(&c, 1) != 1) { |
407 |
|
|
delete gui; |
408 |
|
|
gui = 0; |
409 |
|
|
fprintf(stderr,"Oops, GUI process died...\n"); |
410 |
|
|
} else { |
411 |
|
|
// fprintf(stderr,"%c",c); |
412 |
|
|
switch (c) { |
413 |
|
|
case 'q': |
414 |
|
|
quit_thyself = true; |
415 |
|
|
break; |
416 |
|
|
case 'r': |
417 |
|
|
Reset(); |
418 |
|
|
break; |
419 |
|
|
case 'p':{ |
420 |
|
|
Prefs *np = Frodo::reload_prefs(); |
421 |
|
|
NewPrefs(np); |
422 |
|
|
ThePrefs = *np; |
423 |
|
|
break; |
424 |
|
|
} |
425 |
|
|
default: |
426 |
|
|
break; |
427 |
|
|
} |
428 |
|
|
} |
429 |
|
|
} |
430 |
|
|
} |
431 |
|
|
#endif |
432 |
|
|
} |
433 |
|
|
#if !defined(__svgalib__) |
434 |
|
|
if (gui) { |
435 |
|
|
gui->ewrite("quit\n",5); |
436 |
|
|
} |
437 |
|
|
#endif |
438 |
|
|
} |