summaryrefslogtreecommitdiffstatshomepage
path: root/src/emu/netlist/devices/nld_twoterm.h
blob: 49b6ca3c629951ec10f6e0f9d44c393910ceb841 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
// license:GPL-2.0+
// copyright-holders:Couriersud
/*
 * nld_twoterm.h
 *
 * Devices with two terminals ...
 *
 *
 *       (k)
 *  +-----T-----+
 *  |     |     |
 *  |  +--+--+  |
 *  |  |     |  |
 *  |  R     |  |
 *  |  R     |  |
 *  |  R     I  |
 *  |  |     I  |  Device n
 *  |  V+    I  |
 *  |  V     |  |
 *  |  V-    |  |
 *  |  |     |  |
 *  |  +--+--+  |
 *  |     |     |
 *  +-----T-----+
 *       (l)
 *
 *  This is a resistance in series to a voltage source and paralleled by a current source.
 *  This is suitable to model voltage sources, current sources, resistors, capacitors,
 *  inductances and diodes.
 *
 */

#ifndef NLD_TWOTERM_H_
#define NLD_TWOTERM_H_

#include "../nl_base.h"

// ----------------------------------------------------------------------------------------
// Macros
// ----------------------------------------------------------------------------------------

#define NETDEV_R(_name, _R)                                                         \
        NET_REGISTER_DEV(R, _name)                                                  \
        NETDEV_PARAMI(_name, R, _R)

#define NETDEV_POT(_name, _R)                                                       \
        NET_REGISTER_DEV(POT, _name)                                                \
        NETDEV_PARAMI(_name, R, _R)


#define NETDEV_C(_name, _C)                                                         \
        NET_REGISTER_DEV(C, _name)                                                  \
        NETDEV_PARAMI(_name, C, _C)

/* Generic Diode */
#define NETDEV_D(_name,  _model)                                                    \
        NET_REGISTER_DEV(D, _name)                                                  \
        NETDEV_PARAMI(_name, model, # _model)

#define NETDEV_QPNP(_name, _model)                                                 \
        NET_REGISTER_DEV(QPNP_switch, _name)                                       \
        NETDEV_PARAMI(_name,  model, # _model)

#define NETDEV_QNPN(_name, _model)                                                 \
        NET_REGISTER_DEV(QNPN_switch, _name)                                       \
        NETDEV_PARAMI(_name,  model, # _model)

// ----------------------------------------------------------------------------------------
// Implementation
// ----------------------------------------------------------------------------------------

// ----------------------------------------------------------------------------------------
// nld_twoterm
// ----------------------------------------------------------------------------------------

class NETLIB_NAME(twoterm) : public netlist_device_t
{
public:
    ATTR_COLD NETLIB_NAME(twoterm)(const family_t afamily);

    netlist_terminal_t m_P;
    netlist_terminal_t m_N;

    virtual NETLIB_UPDATE_TERMINALS()
    {
    }

    ATTR_HOT inline void set(const double G, const double V, const double I)
    {
        m_P.m_go = m_N.m_go = m_P.m_gt = m_N.m_gt = G;
        m_N.m_Idr = ( -V) * G + I;
        m_P.m_Idr = (  V) * G - I;
    }
protected:
    ATTR_COLD virtual void start();
    ATTR_HOT ATTR_ALIGN void update();

private:
};

// ----------------------------------------------------------------------------------------
// nld_R
// ----------------------------------------------------------------------------------------

class NETLIB_NAME(R_base) : public NETLIB_NAME(twoterm)
{
public:
    ATTR_COLD NETLIB_NAME(R_base)() : NETLIB_NAME(twoterm)(RESISTOR) { }

    inline void set_R(const double R) { set(1.0 / R, 0.0, 0.0); }

protected:
    ATTR_COLD virtual void start();
    ATTR_HOT ATTR_ALIGN void update();
};

NETLIB_DEVICE_WITH_PARAMS_DERIVED(R, R_base,
    netlist_param_double_t m_R;
);

// ----------------------------------------------------------------------------------------
// nld_POT
// ----------------------------------------------------------------------------------------

NETLIB_DEVICE_WITH_PARAMS(POT,
    NETLIB_NAME(R_base) m_R1;
    NETLIB_NAME(R_base) m_R2;

    netlist_param_double_t m_R;
    netlist_param_double_t m_Dial;
);


// ----------------------------------------------------------------------------------------
// nld_C
// ----------------------------------------------------------------------------------------

class NETLIB_NAME(C) : public NETLIB_NAME(twoterm)
{
public:
    ATTR_COLD NETLIB_NAME(C)() : NETLIB_NAME(twoterm)(CAPACITOR) { }

    ATTR_HOT void step_time(const double st)
    {
        double G = m_C.Value() / st;
        double I = -G * (m_P.net().Q_Analog()- m_N.net().Q_Analog());
        set(G, 0.0, I);
    }

protected:
    ATTR_COLD virtual void start();
    ATTR_COLD virtual void update_param();
    ATTR_HOT ATTR_ALIGN void update();

    netlist_param_double_t m_C;

};

// ----------------------------------------------------------------------------------------
// nld_D
// ----------------------------------------------------------------------------------------


// this one has an accuracy of better than 5%. That's enough for our purpose
// add c3 and it'll be better than 1%

#if 0
inline double fastexp_h(const double x)
{
    static const double ln2r = 1.442695040888963387;
    static const double ln2  = 0.693147180559945286;
    //static const double c3   = 0.166666666666666667;

    const double y = x * ln2r;
    const unsigned int t = y;
    const double z = (x - ln2 * (double) t);
    const double zz = z * z;
    //const double zzz = zz * z;

    return (double)(1 << t)*(1.0 + z + 0.5 * zz); // + c3*zzz;
}

inline double fastexp(const double x)
{
    if (x<0)
        return 1.0 / fastexp_h(-x);
    else
        return fastexp_h(x);
}
#endif

class NETLIB_NAME(D) : public NETLIB_NAME(twoterm)
{
public:
    ATTR_COLD NETLIB_NAME(D)() : NETLIB_NAME(twoterm)(DIODE) { }

    NETLIB_UPDATE_TERMINALS()
    {
        const double nVd = m_P.net().Q_Analog()- m_N.net().Q_Analog();

        //FIXME: Optimize cutoff case

        double Id;
        double G;

        if (nVd < -5.0 * m_Vt)
        {
            m_Vd = nVd;
            G = NETLIST_GMIN;
            Id = - m_Is;
        }
        else if (nVd < m_Vcrit)
        {
            m_Vd = nVd;

            const double eVDVt = exp(m_Vd * m_VtInv);
            Id = m_Is * (eVDVt - 1.0);
            G = m_Is * m_VtInv * eVDVt;
        }
        else
        {
#if defined(_MSC_VER) && _MSC_VER < 1800
            m_Vd = m_Vd + log((nVd - m_Vd) * m_VtInv + 1.0) * m_Vt;
#else
            m_Vd = m_Vd + log1p((nVd - m_Vd) * m_VtInv) * m_Vt;
#endif
            const double eVDVt = exp(m_Vd * m_VtInv);
            Id = m_Is * (eVDVt - 1.0);

            G = m_Is * m_VtInv * eVDVt;
        }

        double I = (Id - m_Vd * G);
        set(G, 0.0, I);
    }

protected:
    ATTR_COLD virtual void start();
    ATTR_COLD virtual void update_param();
    ATTR_HOT ATTR_ALIGN void update();

    netlist_param_model_t m_model;

    double m_Vt;
    double m_Is;
    double m_n;

    double m_VtInv;
    double m_Vcrit;
    double m_Vd;

};

/*
 *         + -              C
 *   B ----VVV----+         |
 *                |         |
 *                Rb        Rc
 *                Rb        Rc
 *                Rb        Rc
 *                |         |
 *                +----+----+
 *                     |
 *                     E
 */

// Have a common start for transistors

class NETLIB_NAME(Q) : public netlist_device_t
{
public:
    enum q_type {
        BJT_NPN,
        BJT_PNP
    };

    ATTR_COLD NETLIB_NAME(Q)(const q_type atype, const family_t afamily)
    : netlist_device_t(afamily)
    , m_qtype(atype) { }

    inline q_type qtype() const { return m_qtype; }
    inline bool is_qtype(q_type atype) const { return m_qtype == atype; }
protected:
    ATTR_COLD virtual void start();
    ATTR_HOT ATTR_ALIGN void update();

    netlist_param_model_t m_model;
private:
    q_type m_qtype;
};

class NETLIB_NAME(QBJT) : public NETLIB_NAME(Q)
{
public:

    ATTR_COLD NETLIB_NAME(QBJT)(const q_type atype, const family_t afamily)
    : NETLIB_NAME(Q)(atype, afamily) { }

protected:

private:
};

//NETLIB_NAME(Q) nld_Q::q_type
template <NETLIB_NAME(Q)::q_type _type>
class NETLIB_NAME(QBJT_switch) : public NETLIB_NAME(QBJT)
{
public:
    ATTR_COLD NETLIB_NAME(QBJT_switch)()
    : NETLIB_NAME(QBJT)(_type, BJT_SWITCH), m_gB(NETLIST_GMIN), m_gC(NETLIST_GMIN), m_V(0.0), m_state_on(0) { }

    NETLIB_UPDATEI()
    {
        double vE = INPANALOG(m_EV);
        double vB = INPANALOG(m_BV);

        int new_state = (vB - vE > m_V ) ? 1 : 0;
        if (m_state_on ^ new_state)
        {
            double gb = m_gB;
            double gc = m_gC;
            double v  = m_V;
            if (!new_state )
            {
                // not conducting
                gb = NETLIST_GMIN;
                v = 0;
                gc = NETLIST_GMIN;
            }
            m_RB.set(gb, v,   0.0);
            m_RC.set(gc, 0.0, 0.0);
            m_state_on = new_state;
            m_RB.update_dev();
            m_RC.update_dev();
        }

    }

    NETLIB_NAME(R) m_RB;
    NETLIB_NAME(R) m_RC;

    netlist_analog_input_t m_BV;
    netlist_analog_input_t m_EV;

protected:

    ATTR_COLD virtual void start();
    ATTR_COLD void update_param();

    double m_gB; // base conductance / switch on
    double m_gC; // collector conductance / switch on
    double m_V; // internal voltage source
    UINT8 m_state_on;

private:
};

typedef NETLIB_NAME(QBJT_switch)<NETLIB_NAME(Q)::BJT_PNP> NETLIB_NAME(QPNP_switch);
typedef NETLIB_NAME(QBJT_switch)<NETLIB_NAME(Q)::BJT_NPN> NETLIB_NAME(QNPN_switch);

// ----------------------------------------------------------------------------------------
// nld_VCCS
// ----------------------------------------------------------------------------------------

/*
 *   Voltage controlled current source
 *
 *   IP ---+           +------> OP
 *         |           |
 *         RI          I
 *         RI => G =>  I    IOut = (V(IP)-V(IN)) * G
 *         RI          I
 *         |           |
 *   IN ---+           +------< ON
 *
 *   G=1 ==> 1V ==> 1A
 *
 *   RI = 1 / NETLIST_GMIN
 *
 */

#define NETDEV_VCCS(_name)                                                         \
        NET_REGISTER_DEV(VCCS, _name)                                              \

//NETDEV_PARAMI(_name, model, _model)

class NETLIB_NAME(VCCS) : public netlist_device_t
{
public:
    ATTR_COLD NETLIB_NAME(VCCS)()
    : netlist_device_t(VCCS) {  }
    ATTR_COLD NETLIB_NAME(VCCS)(const family_t afamily)
    : netlist_device_t(afamily) {  }

protected:
    ATTR_COLD virtual void start();
    ATTR_COLD virtual void update_param();
    ATTR_HOT ATTR_ALIGN void update();

    ATTR_COLD void configure(const double Gfac, const double GI);

    netlist_terminal_t m_OP;
    netlist_terminal_t m_ON;

    netlist_terminal_t m_IP;
    netlist_terminal_t m_IN;

    netlist_terminal_t m_OP1;
    netlist_terminal_t m_ON1;

    netlist_param_double_t m_G;
};

// ----------------------------------------------------------------------------------------
// nld_VCVS
// ----------------------------------------------------------------------------------------

/*
 *   Voltage controlled voltage source
 *
 *   Parameters:
 *     G        Default: 1
 *     RO       Default: 1  (would be typically 50 for an op-amp
 *
 *   IP ---+           +--+---- OP
 *         |           |  |
 *         RI          I  RO
 *         RI => G =>  I  RO              V(OP) - V(ON) = (V(IP)-V(IN)) * G
 *         RI          I  RO
 *         |           |  |
 *   IN ---+           +--+---- ON
 *
 *   G=1 ==> 1V ==> 1V
 *
 *   RI = 1 / NETLIST_GMIN
 *
 *   Internal GI = G / RO
 *
 */

#define NETDEV_VCVS(_name)                                                         \
        NET_REGISTER_DEV(VCVS, _name)                                              \

//NETDEV_PARAMI(_name, model, _model)


class NETLIB_NAME(VCVS) : public NETLIB_NAME(VCCS)
{
public:
    ATTR_COLD NETLIB_NAME(VCVS)()
    : NETLIB_NAME(VCCS)(VCVS) { }

protected:
    ATTR_COLD virtual void start();
    ATTR_COLD virtual void update_param();
    //ATTR_HOT ATTR_ALIGN void update();

    netlist_terminal_t m_OP2;
    netlist_terminal_t m_ON2;

    double m_mult;

    netlist_param_double_t m_RO;
};


#endif /* NLD_TWOTERM_H_ */