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cebix |
1.1 |
/* |
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* C64.cpp - Put the pieces together |
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* |
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cebix |
1.5 |
* Frodo (C) 1994-1997,2002-2004 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 "sysdeps.h" |
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#include "C64.h" |
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#include "CPUC64.h" |
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#include "CPU1541.h" |
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#include "VIC.h" |
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#include "SID.h" |
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#include "CIA.h" |
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#include "REU.h" |
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#include "IEC.h" |
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#include "1541job.h" |
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#include "Display.h" |
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#include "Prefs.h" |
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#if defined(__unix) && !defined(__svgalib__) |
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#include "CmdPipe.h" |
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#endif |
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#ifdef FRODO_SC |
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bool IsFrodoSC = true; |
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#else |
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bool IsFrodoSC = false; |
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#endif |
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/* |
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* Constructor: Allocate objects and memory |
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*/ |
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C64::C64() |
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{ |
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uint8 *p; |
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// The thread is not yet running |
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thread_running = false; |
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quit_thyself = false; |
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have_a_break = false; |
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// System-dependent things |
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c64_ctor1(); |
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// Open display |
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TheDisplay = new C64Display(this); |
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// Allocate RAM/ROM memory |
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cebix |
1.3 |
RAM = new uint8[C64_RAM_SIZE]; |
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Basic = new uint8[BASIC_ROM_SIZE]; |
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Kernal = new uint8[KERNAL_ROM_SIZE]; |
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Char = new uint8[CHAR_ROM_SIZE]; |
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Color = new uint8[COLOR_RAM_SIZE]; |
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RAM1541 = new uint8[DRIVE_RAM_SIZE]; |
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ROM1541 = new uint8[DRIVE_ROM_SIZE]; |
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cebix |
1.1 |
|
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// Create the chips |
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TheCPU = new MOS6510(this, RAM, Basic, Kernal, Char, Color); |
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TheJob1541 = new Job1541(RAM1541); |
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TheCPU1541 = new MOS6502_1541(this, TheJob1541, TheDisplay, RAM1541, ROM1541); |
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TheVIC = TheCPU->TheVIC = new MOS6569(this, TheDisplay, TheCPU, RAM, Char, Color); |
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TheSID = TheCPU->TheSID = new MOS6581(this); |
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TheCIA1 = TheCPU->TheCIA1 = new MOS6526_1(TheCPU, TheVIC); |
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TheCIA2 = TheCPU->TheCIA2 = TheCPU1541->TheCIA2 = new MOS6526_2(TheCPU, TheVIC, TheCPU1541); |
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TheIEC = TheCPU->TheIEC = new IEC(TheDisplay); |
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TheREU = TheCPU->TheREU = new REU(TheCPU); |
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// Initialize RAM with powerup pattern |
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cebix |
1.3 |
p = RAM; |
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for (unsigned i=0; i<512; i++) { |
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for (unsigned j=0; j<64; j++) |
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cebix |
1.1 |
*p++ = 0; |
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cebix |
1.3 |
for (unsigned j=0; j<64; j++) |
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cebix |
1.1 |
*p++ = 0xff; |
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} |
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// Initialize color RAM with random values |
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1.3 |
p = Color; |
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for (unsigned i=0; i<COLOR_RAM_SIZE; i++) |
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cebix |
1.1 |
*p++ = rand() & 0x0f; |
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// Clear 1541 RAM |
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cebix |
1.3 |
memset(RAM1541, 0, DRIVE_RAM_SIZE); |
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cebix |
1.1 |
|
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// Open joystick drivers if required |
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cebix |
1.4 |
open_close_joysticks(0, 0, ThePrefs.Joystick1Port, ThePrefs.Joystick2Port); |
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1.1 |
joykey = 0xff; |
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#ifdef FRODO_SC |
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CycleCounter = 0; |
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#endif |
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// System-dependent things |
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c64_ctor2(); |
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} |
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/* |
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* Destructor: Delete all objects |
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*/ |
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C64::~C64() |
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{ |
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cebix |
1.4 |
open_close_joysticks(ThePrefs.Joystick1Port, ThePrefs.Joystick2Port, 0, 0); |
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cebix |
1.1 |
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delete TheJob1541; |
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delete TheREU; |
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delete TheIEC; |
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delete TheCIA2; |
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delete TheCIA1; |
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delete TheSID; |
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delete TheVIC; |
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delete TheCPU1541; |
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delete TheCPU; |
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delete TheDisplay; |
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delete[] RAM; |
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delete[] Basic; |
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delete[] Kernal; |
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delete[] Char; |
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delete[] Color; |
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delete[] RAM1541; |
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delete[] ROM1541; |
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c64_dtor(); |
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} |
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/* |
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* Reset C64 |
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*/ |
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void C64::Reset(void) |
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{ |
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TheCPU->AsyncReset(); |
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TheCPU1541->AsyncReset(); |
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TheSID->Reset(); |
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TheCIA1->Reset(); |
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TheCIA2->Reset(); |
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TheIEC->Reset(); |
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} |
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/* |
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* NMI C64 |
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*/ |
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void C64::NMI(void) |
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{ |
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TheCPU->AsyncNMI(); |
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} |
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/* |
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* The preferences have changed. prefs is a pointer to the new |
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* preferences, ThePrefs still holds the previous ones. |
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* The emulation must be in the paused state! |
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*/ |
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void C64::NewPrefs(Prefs *prefs) |
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{ |
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cebix |
1.4 |
open_close_joysticks(ThePrefs.Joystick1Port, ThePrefs.Joystick2Port, prefs->Joystick1Port, prefs->Joystick2Port); |
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cebix |
1.1 |
PatchKernal(prefs->FastReset, prefs->Emul1541Proc); |
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TheDisplay->NewPrefs(prefs); |
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#ifdef __riscos__ |
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// Changed order of calls. If 1541 mode hasn't changed the order is insignificant. |
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if (prefs->Emul1541Proc) { |
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// New prefs have 1541 enabled ==> if old prefs had disabled free drives FIRST |
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TheIEC->NewPrefs(prefs); |
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TheJob1541->NewPrefs(prefs); |
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} else { |
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// New prefs has 1541 disabled ==> if old prefs had enabled free job FIRST |
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TheJob1541->NewPrefs(prefs); |
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TheIEC->NewPrefs(prefs); |
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} |
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#else |
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TheIEC->NewPrefs(prefs); |
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TheJob1541->NewPrefs(prefs); |
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#endif |
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TheREU->NewPrefs(prefs); |
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TheSID->NewPrefs(prefs); |
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// Reset 1541 processor if turned on |
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if (!ThePrefs.Emul1541Proc && prefs->Emul1541Proc) |
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TheCPU1541->AsyncReset(); |
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} |
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/* |
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* Patch kernal IEC routines |
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*/ |
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void C64::PatchKernal(bool fast_reset, bool emul_1541_proc) |
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{ |
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if (fast_reset) { |
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Kernal[0x1d84] = 0xa0; |
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Kernal[0x1d85] = 0x00; |
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} else { |
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Kernal[0x1d84] = orig_kernal_1d84; |
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Kernal[0x1d85] = orig_kernal_1d85; |
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} |
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if (emul_1541_proc) { |
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Kernal[0x0d40] = 0x78; |
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Kernal[0x0d41] = 0x20; |
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Kernal[0x0d23] = 0x78; |
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Kernal[0x0d24] = 0x20; |
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Kernal[0x0d36] = 0x78; |
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Kernal[0x0d37] = 0x20; |
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Kernal[0x0e13] = 0x78; |
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Kernal[0x0e14] = 0xa9; |
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Kernal[0x0def] = 0x78; |
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Kernal[0x0df0] = 0x20; |
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Kernal[0x0dbe] = 0xad; |
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Kernal[0x0dbf] = 0x00; |
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Kernal[0x0dcc] = 0x78; |
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Kernal[0x0dcd] = 0x20; |
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Kernal[0x0e03] = 0x20; |
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Kernal[0x0e04] = 0xbe; |
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} else { |
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Kernal[0x0d40] = 0xf2; // IECOut |
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Kernal[0x0d41] = 0x00; |
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Kernal[0x0d23] = 0xf2; // IECOutATN |
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Kernal[0x0d24] = 0x01; |
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Kernal[0x0d36] = 0xf2; // IECOutSec |
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Kernal[0x0d37] = 0x02; |
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Kernal[0x0e13] = 0xf2; // IECIn |
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Kernal[0x0e14] = 0x03; |
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Kernal[0x0def] = 0xf2; // IECSetATN |
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Kernal[0x0df0] = 0x04; |
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Kernal[0x0dbe] = 0xf2; // IECRelATN |
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Kernal[0x0dbf] = 0x05; |
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Kernal[0x0dcc] = 0xf2; // IECTurnaround |
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Kernal[0x0dcd] = 0x06; |
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Kernal[0x0e03] = 0xf2; // IECRelease |
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Kernal[0x0e04] = 0x07; |
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} |
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// 1541 |
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ROM1541[0x2ae4] = 0xea; // Don't check ROM checksum |
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ROM1541[0x2ae5] = 0xea; |
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ROM1541[0x2ae8] = 0xea; |
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ROM1541[0x2ae9] = 0xea; |
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ROM1541[0x2c9b] = 0xf2; // DOS idle loop |
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ROM1541[0x2c9c] = 0x00; |
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ROM1541[0x3594] = 0x20; // Write sector |
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ROM1541[0x3595] = 0xf2; |
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ROM1541[0x3596] = 0xf5; |
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ROM1541[0x3597] = 0xf2; |
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ROM1541[0x3598] = 0x01; |
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ROM1541[0x3b0c] = 0xf2; // Format track |
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ROM1541[0x3b0d] = 0x02; |
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} |
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/* |
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* Save RAM contents |
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*/ |
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void C64::SaveRAM(char *filename) |
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{ |
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FILE *f; |
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if ((f = fopen(filename, "wb")) == NULL) |
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ShowRequester("RAM save failed.", "OK", NULL); |
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else { |
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fwrite((void*)RAM, 1, 0x10000, f); |
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fwrite((void*)Color, 1, 0x400, f); |
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if (ThePrefs.Emul1541Proc) |
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fwrite((void*)RAM1541, 1, 0x800, f); |
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fclose(f); |
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} |
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} |
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/* |
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* Save CPU state to snapshot |
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* |
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* 0: Error |
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* 1: OK |
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* -1: Instruction not completed |
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*/ |
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int C64::SaveCPUState(FILE *f) |
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{ |
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MOS6510State state; |
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TheCPU->GetState(&state); |
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312 |
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if (!state.instruction_complete) |
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return -1; |
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int i = fwrite(RAM, 0x10000, 1, f); |
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i += fwrite(Color, 0x400, 1, f); |
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i += fwrite((void*)&state, sizeof(state), 1, f); |
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return i == 3; |
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} |
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322 |
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323 |
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/* |
324 |
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* Load CPU state from snapshot |
325 |
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*/ |
326 |
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327 |
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bool C64::LoadCPUState(FILE *f) |
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{ |
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MOS6510State state; |
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int i = fread(RAM, 0x10000, 1, f); |
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i += fread(Color, 0x400, 1, f); |
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i += fread((void*)&state, sizeof(state), 1, f); |
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335 |
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if (i == 3) { |
336 |
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TheCPU->SetState(&state); |
337 |
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return true; |
338 |
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} else |
339 |
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return false; |
340 |
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} |
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342 |
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343 |
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/* |
344 |
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* Save 1541 state to snapshot |
345 |
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* |
346 |
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* 0: Error |
347 |
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* 1: OK |
348 |
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* -1: Instruction not completed |
349 |
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*/ |
350 |
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351 |
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int C64::Save1541State(FILE *f) |
352 |
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{ |
353 |
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MOS6502State state; |
354 |
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TheCPU1541->GetState(&state); |
355 |
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356 |
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if (!state.idle && !state.instruction_complete) |
357 |
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return -1; |
358 |
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359 |
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int i = fwrite(RAM1541, 0x800, 1, f); |
360 |
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i += fwrite((void*)&state, sizeof(state), 1, f); |
361 |
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362 |
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return i == 2; |
363 |
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} |
364 |
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365 |
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366 |
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/* |
367 |
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* Load 1541 state from snapshot |
368 |
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*/ |
369 |
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370 |
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bool C64::Load1541State(FILE *f) |
371 |
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{ |
372 |
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MOS6502State state; |
373 |
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374 |
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int i = fread(RAM1541, 0x800, 1, f); |
375 |
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i += fread((void*)&state, sizeof(state), 1, f); |
376 |
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377 |
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if (i == 2) { |
378 |
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TheCPU1541->SetState(&state); |
379 |
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return true; |
380 |
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} else |
381 |
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return false; |
382 |
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} |
383 |
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384 |
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385 |
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/* |
386 |
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* Save VIC state to snapshot |
387 |
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*/ |
388 |
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389 |
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bool C64::SaveVICState(FILE *f) |
390 |
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{ |
391 |
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MOS6569State state; |
392 |
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TheVIC->GetState(&state); |
393 |
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return fwrite((void*)&state, sizeof(state), 1, f) == 1; |
394 |
|
|
} |
395 |
|
|
|
396 |
|
|
|
397 |
|
|
/* |
398 |
|
|
* Load VIC state from snapshot |
399 |
|
|
*/ |
400 |
|
|
|
401 |
|
|
bool C64::LoadVICState(FILE *f) |
402 |
|
|
{ |
403 |
|
|
MOS6569State state; |
404 |
|
|
|
405 |
|
|
if (fread((void*)&state, sizeof(state), 1, f) == 1) { |
406 |
|
|
TheVIC->SetState(&state); |
407 |
|
|
return true; |
408 |
|
|
} else |
409 |
|
|
return false; |
410 |
|
|
} |
411 |
|
|
|
412 |
|
|
|
413 |
|
|
/* |
414 |
|
|
* Save SID state to snapshot |
415 |
|
|
*/ |
416 |
|
|
|
417 |
|
|
bool C64::SaveSIDState(FILE *f) |
418 |
|
|
{ |
419 |
|
|
MOS6581State state; |
420 |
|
|
TheSID->GetState(&state); |
421 |
|
|
return fwrite((void*)&state, sizeof(state), 1, f) == 1; |
422 |
|
|
} |
423 |
|
|
|
424 |
|
|
|
425 |
|
|
/* |
426 |
|
|
* Load SID state from snapshot |
427 |
|
|
*/ |
428 |
|
|
|
429 |
|
|
bool C64::LoadSIDState(FILE *f) |
430 |
|
|
{ |
431 |
|
|
MOS6581State state; |
432 |
|
|
|
433 |
|
|
if (fread((void*)&state, sizeof(state), 1, f) == 1) { |
434 |
|
|
TheSID->SetState(&state); |
435 |
|
|
return true; |
436 |
|
|
} else |
437 |
|
|
return false; |
438 |
|
|
} |
439 |
|
|
|
440 |
|
|
|
441 |
|
|
/* |
442 |
|
|
* Save CIA states to snapshot |
443 |
|
|
*/ |
444 |
|
|
|
445 |
|
|
bool C64::SaveCIAState(FILE *f) |
446 |
|
|
{ |
447 |
|
|
MOS6526State state; |
448 |
|
|
TheCIA1->GetState(&state); |
449 |
|
|
|
450 |
|
|
if (fwrite((void*)&state, sizeof(state), 1, f) == 1) { |
451 |
|
|
TheCIA2->GetState(&state); |
452 |
|
|
return fwrite((void*)&state, sizeof(state), 1, f) == 1; |
453 |
|
|
} else |
454 |
|
|
return false; |
455 |
|
|
} |
456 |
|
|
|
457 |
|
|
|
458 |
|
|
/* |
459 |
|
|
* Load CIA states from snapshot |
460 |
|
|
*/ |
461 |
|
|
|
462 |
|
|
bool C64::LoadCIAState(FILE *f) |
463 |
|
|
{ |
464 |
|
|
MOS6526State state; |
465 |
|
|
|
466 |
|
|
if (fread((void*)&state, sizeof(state), 1, f) == 1) { |
467 |
|
|
TheCIA1->SetState(&state); |
468 |
|
|
if (fread((void*)&state, sizeof(state), 1, f) == 1) { |
469 |
|
|
TheCIA2->SetState(&state); |
470 |
|
|
return true; |
471 |
|
|
} else |
472 |
|
|
return false; |
473 |
|
|
} else |
474 |
|
|
return false; |
475 |
|
|
} |
476 |
|
|
|
477 |
|
|
|
478 |
|
|
/* |
479 |
|
|
* Save 1541 GCR state to snapshot |
480 |
|
|
*/ |
481 |
|
|
|
482 |
|
|
bool C64::Save1541JobState(FILE *f) |
483 |
|
|
{ |
484 |
|
|
Job1541State state; |
485 |
|
|
TheJob1541->GetState(&state); |
486 |
|
|
return fwrite((void*)&state, sizeof(state), 1, f) == 1; |
487 |
|
|
} |
488 |
|
|
|
489 |
|
|
|
490 |
|
|
/* |
491 |
|
|
* Load 1541 GCR state from snapshot |
492 |
|
|
*/ |
493 |
|
|
|
494 |
|
|
bool C64::Load1541JobState(FILE *f) |
495 |
|
|
{ |
496 |
|
|
Job1541State state; |
497 |
|
|
|
498 |
|
|
if (fread((void*)&state, sizeof(state), 1, f) == 1) { |
499 |
|
|
TheJob1541->SetState(&state); |
500 |
|
|
return true; |
501 |
|
|
} else |
502 |
|
|
return false; |
503 |
|
|
} |
504 |
|
|
|
505 |
|
|
|
506 |
|
|
#define SNAPSHOT_HEADER "FrodoSnapshot" |
507 |
|
|
#define SNAPSHOT_1541 1 |
508 |
|
|
|
509 |
|
|
#define ADVANCE_CYCLES \ |
510 |
|
|
TheVIC->EmulateCycle(); \ |
511 |
|
|
TheCIA1->EmulateCycle(); \ |
512 |
|
|
TheCIA2->EmulateCycle(); \ |
513 |
|
|
TheCPU->EmulateCycle(); \ |
514 |
|
|
if (ThePrefs.Emul1541Proc) { \ |
515 |
|
|
TheCPU1541->CountVIATimers(1); \ |
516 |
|
|
if (!TheCPU1541->Idle) \ |
517 |
|
|
TheCPU1541->EmulateCycle(); \ |
518 |
|
|
} |
519 |
|
|
|
520 |
|
|
|
521 |
|
|
/* |
522 |
|
|
* Save snapshot (emulation must be paused and in VBlank) |
523 |
|
|
* |
524 |
|
|
* To be able to use SC snapshots with SL, SC snapshots are made thus that no |
525 |
|
|
* partially dealt with instructions are saved. Instead all devices are advanced |
526 |
|
|
* cycle by cycle until the current instruction has been finished. The number of |
527 |
|
|
* cycles this takes is saved in the snapshot and will be reconstructed if the |
528 |
|
|
* snapshot is loaded into FrodoSC again. |
529 |
|
|
*/ |
530 |
|
|
|
531 |
|
|
void C64::SaveSnapshot(char *filename) |
532 |
|
|
{ |
533 |
|
|
FILE *f; |
534 |
|
|
uint8 flags; |
535 |
|
|
uint8 delay; |
536 |
|
|
int stat; |
537 |
|
|
|
538 |
|
|
if ((f = fopen(filename, "wb")) == NULL) { |
539 |
|
|
ShowRequester("Unable to open snapshot file", "OK", NULL); |
540 |
|
|
return; |
541 |
|
|
} |
542 |
|
|
|
543 |
|
|
fprintf(f, "%s%c", SNAPSHOT_HEADER, 10); |
544 |
|
|
fputc(0, f); // Version number 0 |
545 |
|
|
flags = 0; |
546 |
|
|
if (ThePrefs.Emul1541Proc) |
547 |
|
|
flags |= SNAPSHOT_1541; |
548 |
|
|
fputc(flags, f); |
549 |
|
|
SaveVICState(f); |
550 |
|
|
SaveSIDState(f); |
551 |
|
|
SaveCIAState(f); |
552 |
|
|
|
553 |
|
|
#ifdef FRODO_SC |
554 |
|
|
delay = 0; |
555 |
|
|
do { |
556 |
|
|
if ((stat = SaveCPUState(f)) == -1) { // -1 -> Instruction not finished yet |
557 |
|
|
ADVANCE_CYCLES; // Advance everything by one cycle |
558 |
|
|
delay++; |
559 |
|
|
} |
560 |
|
|
} while (stat == -1); |
561 |
|
|
fputc(delay, f); // Number of cycles the saved CPUC64 lags behind the previous chips |
562 |
|
|
#else |
563 |
|
|
SaveCPUState(f); |
564 |
|
|
fputc(0, f); // No delay |
565 |
|
|
#endif |
566 |
|
|
|
567 |
|
|
if (ThePrefs.Emul1541Proc) { |
568 |
|
|
fwrite(ThePrefs.DrivePath[0], 256, 1, f); |
569 |
|
|
#ifdef FRODO_SC |
570 |
|
|
delay = 0; |
571 |
|
|
do { |
572 |
|
|
if ((stat = Save1541State(f)) == -1) { |
573 |
|
|
ADVANCE_CYCLES; |
574 |
|
|
delay++; |
575 |
|
|
} |
576 |
|
|
} while (stat == -1); |
577 |
|
|
fputc(delay, f); |
578 |
|
|
#else |
579 |
|
|
Save1541State(f); |
580 |
|
|
fputc(0, f); // No delay |
581 |
|
|
#endif |
582 |
|
|
Save1541JobState(f); |
583 |
|
|
} |
584 |
|
|
fclose(f); |
585 |
|
|
|
586 |
|
|
#ifdef __riscos__ |
587 |
|
|
TheWIMP->SnapshotSaved(true); |
588 |
|
|
#endif |
589 |
|
|
} |
590 |
|
|
|
591 |
|
|
|
592 |
|
|
/* |
593 |
|
|
* Load snapshot (emulation must be paused and in VBlank) |
594 |
|
|
*/ |
595 |
|
|
|
596 |
|
|
bool C64::LoadSnapshot(char *filename) |
597 |
|
|
{ |
598 |
|
|
FILE *f; |
599 |
|
|
|
600 |
|
|
if ((f = fopen(filename, "rb")) != NULL) { |
601 |
|
|
char Header[] = SNAPSHOT_HEADER; |
602 |
|
|
char *b = Header, c = 0; |
603 |
|
|
uint8 delay, i; |
604 |
|
|
|
605 |
|
|
// For some reason memcmp()/strcmp() and so forth utterly fail here. |
606 |
|
|
while (*b > 32) { |
607 |
|
|
if ((c = fgetc(f)) != *b++) { |
608 |
|
|
b = NULL; |
609 |
|
|
break; |
610 |
|
|
} |
611 |
|
|
} |
612 |
|
|
if (b != NULL) { |
613 |
|
|
uint8 flags; |
614 |
|
|
bool error = false; |
615 |
|
|
#ifndef FRODO_SC |
616 |
|
|
long vicptr; // File offset of VIC data |
617 |
|
|
#endif |
618 |
|
|
|
619 |
|
|
while (c != 10) |
620 |
|
|
c = fgetc(f); // Shouldn't be necessary |
621 |
|
|
if (fgetc(f) != 0) { |
622 |
|
|
ShowRequester("Unknown snapshot format", "OK", NULL); |
623 |
|
|
fclose(f); |
624 |
|
|
return false; |
625 |
|
|
} |
626 |
|
|
flags = fgetc(f); |
627 |
|
|
#ifndef FRODO_SC |
628 |
|
|
vicptr = ftell(f); |
629 |
|
|
#endif |
630 |
|
|
|
631 |
|
|
error |= !LoadVICState(f); |
632 |
|
|
error |= !LoadSIDState(f); |
633 |
|
|
error |= !LoadCIAState(f); |
634 |
|
|
error |= !LoadCPUState(f); |
635 |
|
|
|
636 |
|
|
delay = fgetc(f); // Number of cycles the 6510 is ahead of the previous chips |
637 |
|
|
#ifdef FRODO_SC |
638 |
|
|
// Make the other chips "catch up" with the 6510 |
639 |
|
|
for (i=0; i<delay; i++) { |
640 |
|
|
TheVIC->EmulateCycle(); |
641 |
|
|
TheCIA1->EmulateCycle(); |
642 |
|
|
TheCIA2->EmulateCycle(); |
643 |
|
|
} |
644 |
|
|
#endif |
645 |
|
|
if ((flags & SNAPSHOT_1541) != 0) { |
646 |
|
|
Prefs *prefs = new Prefs(ThePrefs); |
647 |
|
|
|
648 |
|
|
// First switch on emulation |
649 |
|
|
error |= (fread(prefs->DrivePath[0], 256, 1, f) != 1); |
650 |
|
|
prefs->Emul1541Proc = true; |
651 |
|
|
NewPrefs(prefs); |
652 |
|
|
ThePrefs = *prefs; |
653 |
|
|
delete prefs; |
654 |
|
|
|
655 |
|
|
// Then read the context |
656 |
|
|
error |= !Load1541State(f); |
657 |
|
|
|
658 |
|
|
delay = fgetc(f); // Number of cycles the 6502 is ahead of the previous chips |
659 |
|
|
#ifdef FRODO_SC |
660 |
|
|
// Make the other chips "catch up" with the 6502 |
661 |
|
|
for (i=0; i<delay; i++) { |
662 |
|
|
TheVIC->EmulateCycle(); |
663 |
|
|
TheCIA1->EmulateCycle(); |
664 |
|
|
TheCIA2->EmulateCycle(); |
665 |
|
|
TheCPU->EmulateCycle(); |
666 |
|
|
} |
667 |
|
|
#endif |
668 |
|
|
Load1541JobState(f); |
669 |
|
|
#ifdef __riscos__ |
670 |
|
|
TheWIMP->ThePrefsToWindow(); |
671 |
|
|
#endif |
672 |
|
|
} else if (ThePrefs.Emul1541Proc) { // No emulation in snapshot, but currently active? |
673 |
|
|
Prefs *prefs = new Prefs(ThePrefs); |
674 |
|
|
prefs->Emul1541Proc = false; |
675 |
|
|
NewPrefs(prefs); |
676 |
|
|
ThePrefs = *prefs; |
677 |
|
|
delete prefs; |
678 |
|
|
#ifdef __riscos__ |
679 |
|
|
TheWIMP->ThePrefsToWindow(); |
680 |
|
|
#endif |
681 |
|
|
} |
682 |
|
|
|
683 |
|
|
#ifndef FRODO_SC |
684 |
|
|
fseek(f, vicptr, SEEK_SET); |
685 |
|
|
LoadVICState(f); // Load VIC data twice in SL (is REALLY necessary sometimes!) |
686 |
|
|
#endif |
687 |
|
|
fclose(f); |
688 |
|
|
|
689 |
|
|
if (error) { |
690 |
|
|
ShowRequester("Error reading snapshot file", "OK", NULL); |
691 |
|
|
Reset(); |
692 |
|
|
return false; |
693 |
|
|
} else |
694 |
|
|
return true; |
695 |
|
|
} else { |
696 |
|
|
fclose(f); |
697 |
|
|
ShowRequester("Not a Frodo snapshot file", "OK", NULL); |
698 |
|
|
return false; |
699 |
|
|
} |
700 |
|
|
} else { |
701 |
|
|
ShowRequester("Can't open snapshot file", "OK", NULL); |
702 |
|
|
return false; |
703 |
|
|
} |
704 |
|
|
} |
705 |
|
|
|
706 |
|
|
|
707 |
|
|
#ifdef __BEOS__ |
708 |
|
|
#include "C64_Be.h" |
709 |
|
|
#endif |
710 |
|
|
|
711 |
|
|
#ifdef AMIGA |
712 |
|
|
#include "C64_Amiga.h" |
713 |
|
|
#endif |
714 |
|
|
|
715 |
|
|
#ifdef __unix |
716 |
|
|
#include "C64_x.h" |
717 |
|
|
#endif |
718 |
|
|
|
719 |
|
|
#ifdef __mac__ |
720 |
|
|
#include "C64_mac.h" |
721 |
|
|
#endif |
722 |
|
|
|
723 |
|
|
#ifdef WIN32 |
724 |
|
|
#include "C64_WIN32.h" |
725 |
|
|
#endif |
726 |
|
|
|
727 |
|
|
#ifdef __riscos__ |
728 |
|
|
#include "C64_Acorn.h" |
729 |
|
|
#endif |