libsidplayfp  2.0.4
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 private:
85  typedef std::map<int, ExtraSidBank*> sidBankMap_t;
86 
87 private:
89  double cpuFrequency;
90 
92  int irqCount;
93 
95  bool oldBAState;
96 
98  EventScheduler eventScheduler;
99 
101  c64cpu cpu;
102 
104  c64cia1 cia1;
105 
107  c64cia2 cia2;
108 
110  c64vic vic;
111 
113  ColorRAMBank colorRAMBank;
114 
116  SidBank sidBank;
117 
119  sidBankMap_t extraSidBanks;
120 
122  DisconnectedBusBank disconnectedBusBank;
123 
125  IOBank ioBank;
126 
128  MMU mmu;
129 
130 private:
131  static double getCpuFreq(model_t model);
132 
133 private:
140  uint8_t cpuRead(uint_least16_t addr) override { return mmu.cpuRead(addr); }
141 
148  void cpuWrite(uint_least16_t addr, uint8_t data) override { mmu.cpuWrite(addr, data); }
149 
157  inline void interruptIRQ(bool state) override;
158 
164  inline void interruptNMI() override { cpu.triggerNMI(); }
165 
169  inline void interruptRST() override { cpu.triggerRST(); }
170 
178  inline void setBA(bool state) override;
179 
183  inline void lightpen(bool state) override;
184 
185  void resetIoBank();
186 
187 public:
188  c64();
189 
195  EventScheduler *getEventScheduler() { return &eventScheduler; }
196 
197  uint_least32_t getTime() const { return getTimeMs() / 1000; }
198 
199  uint_least32_t getTimeMs() const { return static_cast<uint_least32_t>((eventScheduler.getTime(EVENT_CLOCK_PHI1) * 1000) / cpuFrequency); }
200 
206  void clock() { eventScheduler.clock(); }
207 
208  void debug(bool enable, FILE *out) { cpu.debug(enable, out); }
209 
210  void reset();
211  void resetCpu() { cpu.reset(); }
212 
216  void setModel(model_t model);
217 
221  void setCiaModel(bool newModel);
222 
223  void setRoms(const uint8_t* kernal, const uint8_t* basic, const uint8_t* character)
224  {
225  mmu.setRoms(kernal, basic, character);
226  }
227 
233  double getMainCpuSpeed() const { return cpuFrequency; }
234 
240  void setBaseSid(c64sid *s);
241 
251  bool addExtraSid(c64sid *s, int address);
252 
256  void clearSids();
257 
262  const char* cpuCredits() const { return cpu.credits(); }
263  const char* ciaCredits() const { return cia1.credits(); }
264  const char* vicCredits() const { return vic.credits(); }
266 
267  sidmemory& getMemInterface() { return mmu; }
268 
269  uint_least16_t getCia1TimerA() const { return cia1.getTimerA(); }
270 };
271 
272 void c64::interruptIRQ(bool state)
273 {
274  if (state)
275  {
276  if (irqCount == 0)
277  cpu.triggerIRQ();
278 
279  irqCount ++;
280  }
281  else
282  {
283  irqCount --;
284  if (irqCount == 0)
285  cpu.clearIRQ();
286  }
287 }
288 
289 void c64::setBA(bool state)
290 {
291  // only react to changes in state
292  if (state == oldBAState)
293  return;
294 
295  oldBAState = state;
296 
297  // Signal changes in BA to interested parties
298  cpu.setRDY(state);
299 }
300 
301 void c64::lightpen(bool state)
302 {
303  if (!state)
304  vic.triggerLightpen();
305  else
306  vic.clearLightpen();
307 }
308 
309 }
310 
311 #endif // C64_H
libsidplayfp::MMU::cpuRead
uint8_t cpuRead(uint_least16_t addr) const
Definition: mmu.h:129
libsidplayfp::c64::setCiaModel
void setCiaModel(bool newModel)
Definition: c64.cpp:133
libsidplayfp::MOS6510::triggerRST
void triggerRST()
Definition: mos6510.cpp:168
libsidplayfp::IOBank
Definition: IOBank.h:42
libsidplayfp::MMU
Definition: mmu.h:50
libsidplayfp::SidBank
Definition: SidBank.h:41
libsidplayfp::MMU::cpuWrite
void cpuWrite(uint_least16_t addr, uint8_t data)
Definition: mmu.h:137
libsidplayfp::EventScheduler::clock
void clock()
Definition: EventScheduler.h:140
libsidplayfp::c64cia2
Definition: c64cia.h:106
libsidplayfp::c64::PAL_N
@ PAL_N
C64 Drean.
Definition: c64.h:80
libsidplayfp::c64::PAL_B
@ PAL_B
PAL C64.
Definition: c64.h:77
libsidplayfp::c64::getMainCpuSpeed
double getMainCpuSpeed() const
Definition: c64.h:233
libsidplayfp::EventScheduler
Definition: EventScheduler.h:62
libsidplayfp::MOS656X::clearLightpen
void clearLightpen()
Definition: mos656x.cpp:689
libsidplayfp::MOS6510::triggerNMI
void triggerNMI()
Definition: mos6510.cpp:182
libsidplayfp::c64::cpuCredits
const char * cpuCredits() const
Definition: c64.h:262
libsidplayfp::MOS6510::credits
static const char * credits()
Definition: mos6510.cpp:2188
libsidplayfp::EventScheduler::getTime
event_clock_t getTime(event_phase_t phase) const
Definition: EventScheduler.h:162
libsidplayfp::c64::NTSC_M
@ NTSC_M
NTSC C64.
Definition: c64.h:78
libsidplayfp::c64::model_t
model_t
Definition: c64.h:76
libsidplayfp::MOS656X::triggerLightpen
void triggerLightpen()
Definition: mos656x.cpp:676
libsidplayfp::MOS6510::clearIRQ
void clearIRQ()
Definition: mos6510.cpp:214
libsidplayfp::c64
Definition: c64.h:73
libsidplayfp::MOS6510::reset
void reset()
Definition: mos6510.cpp:2169
libsidplayfp::DisconnectedBusBank
Definition: DisconnectedBusBank.h:42
libsidplayfp::MOS6526::credits
static const char * credits()
Definition: mos6526.cpp:160
libsidplayfp::c64::addExtraSid
bool addExtraSid(c64sid *s, int address)
Definition: c64.cpp:144
libsidplayfp::MOS6510::setRDY
void setRDY(bool newRDY)
Definition: mos6510.cpp:120
libsidplayfp::c64vic
Definition: c64vic.h:45
libsidplayfp::c64::OLD_NTSC_M
@ OLD_NTSC_M
Old NTSC C64.
Definition: c64.h:79
libsidplayfp::c64::clearSids
void clearSids()
Definition: c64.cpp:178
libsidplayfp::c64cpu
Definition: c64cpu.h:42
libsidplayfp::c64sid
Definition: c64sid.h:37
libsidplayfp::MOS6510::triggerIRQ
void triggerIRQ()
Definition: mos6510.cpp:198
libsidplayfp::ColorRAMBank
Definition: ColorRAMBank.h:43
libsidplayfp::c64env
Definition: c64env.h:41
libsidplayfp::c64cia1
Definition: c64cia.h:47
libsidplayfp::c64::clock
void clock()
Definition: c64.h:206
libsidplayfp::c64::getEventScheduler
EventScheduler * getEventScheduler()
Definition: c64.h:195
libsidplayfp::c64::PAL_M
@ PAL_M
C64 Brasil.
Definition: c64.h:81
libsidplayfp::c64::setModel
void setModel(model_t model)
Definition: c64.cpp:123
libsidplayfp::c64::setBaseSid
void setBaseSid(c64sid *s)
Definition: c64.cpp:139