libsidplayfp 2.3.0
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
51namespace libsidplayfp
52{
53
54class c64sid;
55class sidmemory;
56
72class c64 final : private c64env
73{
74public:
75 typedef enum
76 {
77 PAL_B = 0
83
84 typedef enum
85 {
86 OLD = 0
90
91private:
92 typedef std::map<int, ExtraSidBank*> sidBankMap_t;
93
94private:
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
137private:
138 static double getCpuFreq(model_t model);
139
140private:
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
194public:
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
274void 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
291void 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
303void 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:43
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:51
void cpuWrite(uint_least16_t addr, uint8_t data)
Definition mmu.h:139
uint8_t cpuRead(uint_least16_t addr) const
Definition mmu.h:131
void setRDY(bool newRDY)
Definition mos6510.cpp:120
void triggerNMI()
Definition mos6510.cpp:182
static const char * credits()
Definition mos6510.cpp:2191
void triggerRST()
Definition mos6510.cpp:168
void reset()
Definition mos6510.cpp:2172
void triggerIRQ()
Definition mos6510.cpp:198
void clearIRQ()
Definition mos6510.cpp:214
static const char * credits()
Definition mos652x.cpp:111
void clearLightpen()
Definition mos656x.cpp:692
void triggerLightpen()
Definition mos656x.cpp:685
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:158
void setCiaModel(cia_model_t model)
Definition c64.cpp:147
const char * cpuCredits() const
Definition c64.h:264
void setBaseSid(c64sid *s)
Definition c64.cpp:153
double getMainCpuSpeed() const
Definition c64.h:235
void setModel(model_t model)
Definition c64.cpp:137
void clearSids()
Definition c64.cpp:192
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