libsidplayfp  2.2.2
c64.h
1 /*
2  * This file is part of libsidplayfp, a SID player engine.
3  *
4  * Copyright 2011-2020 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 
72 class c64 final : private c64env
73 {
74 public:
75  typedef enum
76  {
77  PAL_B = 0
83 
84  typedef enum
85  {
86  OLD = 0
87  ,NEW
90 
91 private:
92  typedef std::map<int, ExtraSidBank*> sidBankMap_t;
93 
94 private:
96  double cpuFrequency;
97 
99  int irqCount;
100 
102  bool oldBAState;
103 
105  EventScheduler eventScheduler;
106 
108  c64cpu cpu;
109 
111  c64cia1 cia1;
112 
114  c64cia2 cia2;
115 
117  c64vic vic;
118 
120  ColorRAMBank colorRAMBank;
121 
123  SidBank sidBank;
124 
126  sidBankMap_t extraSidBanks;
127 
129  DisconnectedBusBank disconnectedBusBank;
130 
132  IOBank ioBank;
133 
135  MMU mmu;
136 
137 private:
138  static double getCpuFreq(model_t model);
139 
140 private:
147  uint8_t cpuRead(uint_least16_t addr) override { return mmu.cpuRead(addr); }
148 
155  void cpuWrite(uint_least16_t addr, uint8_t data) override { mmu.cpuWrite(addr, data); }
156 
164  inline void interruptIRQ(bool state) override;
165 
171  inline void interruptNMI() override { cpu.triggerNMI(); }
172 
176  inline void interruptRST() override { cpu.triggerRST(); }
177 
185  inline void setBA(bool state) override;
186 
190  inline void lightpen(bool state) override;
191 
192  void resetIoBank();
193 
194 public:
195  c64();
196 
202  EventScheduler *getEventScheduler() { return &eventScheduler; }
203 
204  uint_least32_t getTime() const { return getTimeMs() / 1000; }
205 
206  uint_least32_t getTimeMs() const { return static_cast<uint_least32_t>((eventScheduler.getTime(EVENT_CLOCK_PHI1) * 1000) / cpuFrequency); }
207 
213  void clock() { eventScheduler.clock(); }
214 
215  void debug(bool enable, FILE *out) { cpu.debug(enable, out); }
216 
217  void reset();
218  void resetCpu() { cpu.reset(); }
219 
223  void setModel(model_t model);
224 
228  void setCiaModel(cia_model_t model);
229 
235  double getMainCpuSpeed() const { return cpuFrequency; }
236 
242  void setBaseSid(c64sid *s);
243 
253  bool addExtraSid(c64sid *s, int address);
254 
258  void clearSids();
259 
264  const char* cpuCredits() const { return cpu.credits(); }
265  const char* ciaCredits() const { return cia1.credits(); }
266  const char* vicCredits() const { return vic.credits(); }
268 
269  sidmemory& getMemInterface() { return mmu; }
270 
271  uint_least16_t getCia1TimerA() const { return cia1.getTimerA(); }
272 };
273 
274 void c64::interruptIRQ(bool state)
275 {
276  if (state)
277  {
278  if (irqCount == 0)
279  cpu.triggerIRQ();
280 
281  irqCount ++;
282  }
283  else
284  {
285  irqCount --;
286  if (irqCount == 0)
287  cpu.clearIRQ();
288  }
289 }
290 
291 void c64::setBA(bool state)
292 {
293  // only react to changes in state
294  if (state == oldBAState)
295  return;
296 
297  oldBAState = state;
298 
299  // Signal changes in BA to interested parties
300  cpu.setRDY(state);
301 }
302 
303 void c64::lightpen(bool state)
304 {
305  if (!state)
306  vic.triggerLightpen();
307  else
308  vic.clearLightpen();
309 }
310 
311 }
312 
313 #endif // C64_H
Definition: ColorRAMBank.h:43
Definition: DisconnectedBusBank.h:42
Definition: EventScheduler.h:62
event_clock_t getTime(event_phase_t phase) const
Definition: EventScheduler.h:162
void clock()
Definition: EventScheduler.h:140
Definition: IOBank.h:42
Definition: mmu.h:50
void cpuWrite(uint_least16_t addr, uint8_t data)
Definition: mmu.h:135
uint8_t cpuRead(uint_least16_t addr) const
Definition: mmu.h:127
void setRDY(bool newRDY)
Definition: mos6510.cpp:120
void triggerNMI()
Definition: mos6510.cpp:182
static const char * credits()
Definition: mos6510.cpp:2188
void triggerRST()
Definition: mos6510.cpp:168
void reset()
Definition: mos6510.cpp:2169
void triggerIRQ()
Definition: mos6510.cpp:198
void clearIRQ()
Definition: mos6510.cpp:214
static const char * credits()
Definition: mos652x.cpp:143
void clearLightpen()
Definition: mos656x.cpp:697
void triggerLightpen()
Definition: mos656x.cpp:684
Definition: SidBank.h:41
Definition: c64.h:73
model_t
Definition: c64.h:76
@ PAL_B
PAL C64.
Definition: c64.h:77
@ PAL_N
C64 Drean.
Definition: c64.h:80
@ PAL_M
C64 Brasil.
Definition: c64.h:81
@ OLD_NTSC_M
Old NTSC C64.
Definition: c64.h:79
@ NTSC_M
NTSC C64.
Definition: c64.h:78
bool addExtraSid(c64sid *s, int address)
Definition: c64.cpp:157
void setCiaModel(cia_model_t model)
Definition: c64.cpp:146
void setBaseSid(c64sid *s)
Definition: c64.cpp:152
const char * cpuCredits() const
Definition: c64.h:264
double getMainCpuSpeed() const
Definition: c64.h:235
void setModel(model_t model)
Definition: c64.cpp:136
void clearSids()
Definition: c64.cpp:191
void clock()
Definition: c64.h:213
EventScheduler * getEventScheduler()
Definition: c64.h:202
cia_model_t
Definition: c64.h:85
@ OLD_4485
Old CIA, special batch labeled 4485.
Definition: c64.h:88
@ OLD
Old CIA.
Definition: c64.h:86
@ NEW
New CIA.
Definition: c64.h:87
Definition: c64cia.h:47
Definition: c64cia.h:106
Definition: c64cpu.h:69
Definition: c64env.h:41
Definition: c64sid.h:38
Definition: c64vic.h:45