libsidplayfp  2.0.1
c64.h
1 /*
2  * This file is part of libsidplayfp, a SID player engine.
3  *
4  * Copyright 2011-2019 Leandro Nini <drfiemost@users.sourceforge.net>
5  * Copyright 2007-2010 Antti Lankila
6  * Copyright 2000 Simon White
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21  */
22 
23 #ifndef C64_H
24 #define C64_H
25 
26 #include <stdint.h>
27 #include <cstdio>
28 
29 #include <map>
30 
31 #include "Banks/IOBank.h"
32 #include "Banks/ColorRAMBank.h"
33 #include "Banks/DisconnectedBusBank.h"
34 #include "Banks/SidBank.h"
35 #include "Banks/ExtraSidBank.h"
36 
37 #include "EventScheduler.h"
38 
39 #include "c64/c64env.h"
40 #include "c64/c64cpu.h"
41 #include "c64/c64cia.h"
42 #include "c64/c64vic.h"
43 #include "c64/mmu.h"
44 
45 #include "sidcxx11.h"
46 
47 #ifdef HAVE_CONFIG_H
48 # include "config.h"
49 #endif
50 
51 namespace libsidplayfp
52 {
53 
54 class c64sid;
55 class sidmemory;
56 
57 #ifdef PC64_TESTSUITE
58 class testEnv
59 {
60 public:
61  virtual ~testEnv() {}
62  virtual void load(const char *) =0;
63 };
64 #endif
65 
81 class c64 final : private c64env
82 {
83 public:
84  typedef enum
85  {
86  PAL_B = 0
91  } model_t;
92 
93 private:
94  typedef std::map<int, ExtraSidBank*> sidBankMap_t;
95 
96 private:
98  double cpuFrequency;
99 
101  int irqCount;
102 
104  bool oldBAState;
105 
107  EventScheduler eventScheduler;
108 
110  c64cpu cpu;
111 
113  c64cia1 cia1;
114 
116  c64cia2 cia2;
117 
119  c64vic vic;
120 
122  ColorRAMBank colorRAMBank;
123 
125  SidBank sidBank;
126 
128  sidBankMap_t extraSidBanks;
129 
131  DisconnectedBusBank disconnectedBusBank;
132 
134  IOBank ioBank;
135 
137  MMU mmu;
138 
139 private:
140  static double getCpuFreq(model_t model);
141 
142 private:
149  uint8_t cpuRead(uint_least16_t addr) override { return mmu.cpuRead(addr); }
150 
157  void cpuWrite(uint_least16_t addr, uint8_t data) override { mmu.cpuWrite(addr, data); }
158 
166  inline void interruptIRQ(bool state) override;
167 
173  inline void interruptNMI() override { cpu.triggerNMI(); }
174 
178  inline void interruptRST() override { cpu.triggerRST(); }
179 
187  inline void setBA(bool state) override;
188 
189  inline void lightpen(bool state) override;
190 
191  void resetIoBank();
192 
193 public:
194  c64();
195 
201  EventScheduler *getEventScheduler() { return &eventScheduler; }
202 
203  uint_least32_t getTime() const { return getTimeMs() / 1000; }
204 
205  uint_least32_t getTimeMs() const { return static_cast<uint_least32_t>((eventScheduler.getTime(EVENT_CLOCK_PHI1) * 1000) / cpuFrequency); }
206 
212  void clock() { eventScheduler.clock(); }
213 
214  void debug(bool enable, FILE *out) { cpu.debug(enable, out); }
215 
216  void reset();
217  void resetCpu() { cpu.reset(); }
218 
222  void setModel(model_t model);
223 
227  void setCiaModel(bool newModel);
228 
229  void setRoms(const uint8_t* kernal, const uint8_t* basic, const uint8_t* character)
230  {
231  mmu.setRoms(kernal, basic, character);
232  }
233 
239  double getMainCpuSpeed() const { return cpuFrequency; }
240 
246  void setBaseSid(c64sid *s);
247 
257  bool addExtraSid(c64sid *s, int address);
258 
262  void clearSids();
263 
268  const char* cpuCredits() const { return cpu.credits(); }
269  const char* ciaCredits() const { return cia1.credits(); }
270  const char* vicCredits() const { return vic.credits(); }
272 
273  sidmemory& getMemInterface() { return mmu; }
274 
275  uint_least16_t getCia1TimerA() const { return cia1.getTimerA(); }
276 };
277 
278 void c64::interruptIRQ(bool state)
279 {
280  if (state)
281  {
282  if (irqCount == 0)
283  cpu.triggerIRQ();
284 
285  irqCount ++;
286  }
287  else
288  {
289  irqCount --;
290  if (irqCount == 0)
291  cpu.clearIRQ();
292  }
293 }
294 
295 void c64::setBA(bool state)
296 {
297  // only react to changes in state
298  if (state == oldBAState)
299  return;
300 
301  oldBAState = state;
302 
303  // Signal changes in BA to interested parties
304  cpu.setRDY(state);
305 }
306 
307 void c64::lightpen(bool state)
308 {
309  if (state)
310  vic.triggerLightpen();
311  else
312  vic.clearLightpen();
313 }
314 
315 }
316 
317 #endif // C64_H
void setBaseSid(c64sid *s)
Definition: c64.cpp:139
Definition: mmu.h:49
void triggerIRQ()
Definition: mos6510.cpp:180
void clearLightpen()
Definition: mos656x.cpp:689
Definition: ColorRAMBank.h:42
C64 Brasil.
Definition: c64.h:90
Definition: IOBank.h:41
Definition: sidmemory.h:33
void triggerNMI()
Definition: mos6510.cpp:164
const char * vicCredits() const
Definition: c64.h:270
void clock()
Definition: c64.h:212
C64 Drean.
Definition: c64.h:89
Definition: c64.h:81
uint8_t cpuRead(uint_least16_t addr) const
Definition: mmu.h:129
bool addExtraSid(c64sid *s, int address)
Definition: c64.cpp:144
PAL C64.
Definition: c64.h:86
Definition: SidBank.h:40
void triggerLightpen()
Definition: mos656x.cpp:676
void triggerRST()
Definition: mos6510.cpp:150
static const char * credits()
Definition: mos6526.cpp:168
static const char * credits()
Definition: mos6510.cpp:2162
Definition: c64vic.h:44
void clearIRQ()
Definition: mos6510.cpp:196
EventScheduler * getEventScheduler()
Definition: c64.h:201
const char * ciaCredits() const
Definition: c64.h:269
NTSC C64.
Definition: c64.h:87
void setCiaModel(bool newModel)
Definition: c64.cpp:133
Definition: c64cia.h:101
Old NTSC C64.
Definition: c64.h:88
void setModel(model_t model)
Definition: c64.cpp:123
void clearSids()
Definition: c64.cpp:178
void clock()
Definition: EventScheduler.h:140
Definition: EventScheduler.h:61
void reset()
Definition: mos6510.cpp:2143
Definition: c64cpu.h:41
Definition: c64sid.h:36
void cpuWrite(uint_least16_t addr, uint8_t data)
Definition: mmu.h:137
void setRDY(bool newRDY)
Definition: mos6510.cpp:102
model_t
Definition: c64.h:84
const char * cpuCredits() const
Definition: c64.h:268
Definition: c64cia.h:46
Definition: c64env.h:40
event_clock_t getTime(event_phase_t phase) const
Definition: EventScheduler.h:162
double getMainCpuSpeed() const
Definition: c64.h:239
Definition: DisconnectedBusBank.h:41