libsidplayfp  2.11.0
c64.h
1 /*
2  * This file is part of libsidplayfp, a SID player engine.
3  *
4  * Copyright 2011-2023 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  c64cia1 cia1;
109 
111  c64cia2 cia2;
112 
114  c64vic vic;
115 
117  ColorRAMBank colorRAMBank;
118 
120  SidBank sidBank;
121 
123  sidBankMap_t extraSidBanks;
124 
126  DisconnectedBusBank disconnectedBusBank;
127 
129  IOBank ioBank;
130 
132  MMU mmu;
133 
135  c64cpubus cpubus;
136 
138  MOS6510 cpu;
139 
140 private:
141  static double getCpuFreq(model_t model);
142 
143 private:
151  inline void interruptIRQ(bool state) override;
152 
158  inline void interruptNMI() override { cpu.triggerNMI(); }
159 
163  inline void interruptRST() override { cpu.triggerRST(); }
164 
172  inline void setBA(bool state) override;
173 
177  inline void lightpen(bool state) override;
178 
179  void resetIoBank();
180 
181 public:
182  c64();
183  ~c64();
184 
190  EventScheduler *getEventScheduler() { return &eventScheduler; }
191 
192  uint_least32_t getTimeMs() const
193  {
194  return static_cast<uint_least32_t>((eventScheduler.getTime(EVENT_CLOCK_PHI1) * 1000) / cpuFrequency);
195  }
196 
202  void clock() { eventScheduler.clock(); }
203 
204  void debug(bool enable, FILE *out) { cpu.debug(enable, out); }
205 
206  void reset();
207  void resetCpu() { cpu.reset(); }
208 
212  void setModel(model_t model);
213 
217  void setCiaModel(cia_model_t model);
218 
224  double getMainCpuSpeed() const { return cpuFrequency; }
225 
231  void setBaseSid(c64sid *s);
232 
242  bool addExtraSid(c64sid *s, int address);
243 
247  void clearSids();
248 
253  const char* cpuCredits() const { return cpu.credits(); }
254  const char* ciaCredits() const { return cia1.credits(); }
255  const char* vicCredits() const { return vic.credits(); }
257 
258  sidmemory& getMemInterface() { return mmu; }
259 
260  uint_least16_t getCia1TimerA() const { return cia1.getTimerA(); }
261 };
262 
263 void c64::interruptIRQ(bool state)
264 {
265  if (state)
266  {
267  if (irqCount == 0)
268  cpu.triggerIRQ();
269 
270  irqCount ++;
271  }
272  else
273  {
274  irqCount --;
275  if (irqCount == 0)
276  cpu.clearIRQ();
277  }
278 }
279 
280 void c64::setBA(bool state)
281 {
282  // only react to changes in state
283  if (state == oldBAState)
284  return;
285 
286  oldBAState = state;
287 
288  // Signal changes in BA to interested parties
289  cpu.setRDY(state);
290 }
291 
292 void c64::lightpen(bool state)
293 {
294  if (!state)
295  vic.triggerLightpen();
296  else
297  vic.clearLightpen();
298 }
299 
300 }
301 
302 #endif // C64_H
Definition: ColorRAMBank.h:44
Definition: DisconnectedBusBank.h:43
Definition: EventScheduler.h:62
event_clock_t getTime(event_phase_t phase) const
Definition: EventScheduler.h:158
void clock()
Definition: EventScheduler.h:136
Definition: IOBank.h:40
Definition: mmu.h:51
Definition: mos6510.h:71
void setRDY(bool newRDY)
Definition: mos6510.cpp:128
void triggerNMI()
Definition: mos6510.cpp:193
static const char * credits()
Definition: mos6510.cpp:2203
void triggerRST()
Definition: mos6510.cpp:179
void reset()
Definition: mos6510.cpp:2184
void triggerIRQ()
Definition: mos6510.cpp:209
void clearIRQ()
Definition: mos6510.cpp:225
static const char * credits()
Definition: mos652x.cpp:112
void clearLightpen()
Definition: mos656x.cpp:700
void triggerLightpen()
Definition: mos656x.cpp:693
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:154
void setCiaModel(cia_model_t model)
Definition: c64.cpp:143
void setBaseSid(c64sid *s)
Definition: c64.cpp:149
const char * cpuCredits() const
Definition: c64.h:253
double getMainCpuSpeed() const
Definition: c64.h:224
void setModel(model_t model)
Definition: c64.cpp:133
void clearSids()
Definition: c64.cpp:193
void clock()
Definition: c64.h:202
EventScheduler * getEventScheduler()
Definition: c64.h:190
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:40
Definition: c64vic.h:45