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-rw-r--r--src/emu/sound/ics2115.c578
1 files changed, 578 insertions, 0 deletions
diff --git a/src/emu/sound/ics2115.c b/src/emu/sound/ics2115.c
new file mode 100644
index 00000000000..d81cb4994b9
--- /dev/null
+++ b/src/emu/sound/ics2115.c
@@ -0,0 +1,578 @@
+/*
+ ICS 2115 sound synthesizer.
+
+ By O. Galibert, with a lot of help from the nebula
+ ics emulation by Elsemi.
+*/
+
+#include <math.h>
+#include "sndintrf.h"
+#include "streams.h"
+#include "cpuintrf.h"
+#include "ics2115.h"
+
+#define ICS2115LOGERROR 0
+
+// a:401ae90.000 l:1c23c.0 e:1e1d8.0 09 tone
+// a:4023c40.000 l:25d60.0 e:266cb.0 08 tone
+// a:4028fc0.000 l:28fc0.0 e:2b6ef.0 01 violon, noisy
+// a:4034020.000 l:34560.0 e:36001.0 19 percussion
+// a:4034218.1e8 l:34560.0 e:36001.0 19 percussion
+// a:4037f10.000 l:37f3e.0 e:39cb7.0 08 tone
+// a:4044f10.000 l:463ea.0 e:46476.0 09 tone
+// a:40490d0.000 l:760e9.0 e:910d8.0 19 percussion moche
+// a:4051bd0.000 l:51bd0.0 e:528df.0 01 percussion
+// a:40621f0.000 l:621f0.0 e:62aef.0 01 percussion faible
+// a:4063430.000 l:63c78.0 e:63d25.0 08 tone
+// a:40668a0.000 l:668a0.0 e:670ec.0 01 percussion
+// a:4067940.000 l:67940.0 e:68140.0 01 percussion
+// a:40aff36.000 l:aff36.0 e:b194d.0 20 Selection menu
+// a:40b5f26.000 l:b5f26.0 e:b63a5.0 20 Move up/down
+// a:4102772.000 l:02772.0 e:03a31.0 20 Voice test (screwed up?)
+
+// conf:
+// 10b6: 00
+// 11ee: 20
+// 1867: a0
+// 188b: 00
+// 20ba: 01 08 09
+// 2299: 01 09 19
+
+enum { V_ON = 1, V_DONE = 2 };
+
+struct ics2115{
+ const struct ics2115_interface *intf;
+ int index;
+ UINT8 *rom;
+ INT16 *ulaw;
+
+ struct {
+ UINT16 fc, addrh, addrl, strth, endh, volacc;
+ UINT8 strtl, endl, saddr, pan, conf, ctl;
+ UINT8 vstart, vend, vctl;
+ UINT8 state;
+ } voice[32];
+
+ struct {
+ UINT8 scale, preset;
+ emu_timer *timer;
+ UINT64 period; /* in nsec */
+ } timer[2];
+
+ UINT8 reg, osc;
+ UINT8 irq_en, irq_pend;
+ int irq_on;
+ sound_stream * stream;
+};
+
+static int caller_get_pc(void)
+{
+ int pc = activecpu_get_pc();
+#if 0
+ if(pc == 0x14b || pc == 0x26e || pc == 0x284 || pc == 0x28d ||
+ pc == 0x290 || pc == 0x299 || pc == 0x2a2 || pc == 0x2b3) {
+ int sp = z80_get_reg(Z80_SP);
+ pc = cpu_readmem16(sp)|(cpu_readmem16((UINT16)(sp+1)) << 8);
+ }
+#endif
+
+ return pc;
+}
+
+static void recalc_irq(struct ics2115 *chip)
+{
+ int i;
+ int irq = 0;
+ if(chip->irq_en & chip->irq_pend)
+ irq = 1;
+ for(i=0; !irq && i<32; i++)
+ if(chip->voice[i].state & V_DONE)
+ irq = 1;
+ if(irq != chip->irq_on) {
+ chip->irq_on = irq;
+ if(chip->intf->irq_cb)
+ chip->intf->irq_cb(irq ? ASSERT_LINE : CLEAR_LINE);
+ }
+}
+
+
+static void update(void *param, stream_sample_t **inputs, stream_sample_t **buffer, int length)
+{
+ struct ics2115 *chip = param;
+ int osc, i;
+ int rec_irq = 0;
+
+ memset(buffer[0], 0, length*sizeof(*buffer[0]));
+ memset(buffer[1], 0, length*sizeof(*buffer[0]));
+
+ for(osc = 0; osc < 32; osc++)
+ if(chip->voice[osc].state & V_ON) {
+ UINT32 adr = (chip->voice[osc].addrh << 16) | chip->voice[osc].addrl;
+ UINT32 end = (chip->voice[osc].endh << 16) | (chip->voice[osc].endl << 8);
+ UINT32 loop = (chip->voice[osc].strth << 16) | (chip->voice[osc].strtl << 8);
+ UINT32 badr = (chip->voice[osc].saddr << 20) & 0xffffff;
+ UINT32 delta = chip->voice[osc].fc << 2;
+ UINT8 conf = chip->voice[osc].conf;
+ INT32 vol = chip->voice[osc].volacc;
+ vol = (((vol & 0xff0)|0x1000)<<(vol>>12))>>12;
+
+ if (ICS2115LOGERROR) logerror("ICS2115: KEYRUN %02d adr=%08x end=%08x delta=%08x\n",
+ osc, adr, end, delta);
+
+ for(i=0; i<length; i++) {
+ INT32 v = chip->rom[badr|(adr >> 12)];
+ if(conf & 1)
+ v = chip->ulaw[v];
+ else
+ v = ((INT8)v) << 6;
+
+ v = (v*vol)>>(16+5);
+ buffer[0][i] += v;
+ buffer[1][i] += v;
+ adr += delta;
+ if(adr >= end) {
+ if (ICS2115LOGERROR) logerror("ICS2115: KEYDONE %2d\n", osc);
+ adr -= (end-loop);
+ chip->voice[osc].state &= ~V_ON;
+ chip->voice[osc].state |= V_DONE;
+ rec_irq = 1;
+ break;
+ }
+ }
+ chip->voice[osc].addrh = adr >> 16;
+ chip->voice[osc].addrl = adr;
+ }
+ if(rec_irq)
+ recalc_irq(chip);
+}
+
+static void keyon(struct ics2115 *chip, int osc)
+{
+ if (ICS2115LOGERROR) logerror("ICS2115: KEYON %2d conf:%02x vctl:%02x a:%07x.%03x l:%05x.%x e:%05x.%x v:%03x f:%d\n",
+ osc,
+ chip->voice[chip->osc].conf,
+ chip->voice[chip->osc].vctl,
+ (chip->voice[osc].saddr << 20)|(chip->voice[osc].addrh << 4)|(chip->voice[osc].addrl >> 12),
+ (chip->voice[osc].addrl >> 3) & 0x1ff,
+ (chip->voice[osc].strth << 4)|(chip->voice[osc].strtl >> 4),
+ chip->voice[osc].strtl & 0xf,
+ (chip->voice[osc].endh << 4)|(chip->voice[osc].endl >> 4),
+ chip->voice[osc].endl & 0xf,
+ chip->voice[osc].volacc>>4,
+ (chip->voice[chip->osc].fc*33075+512)/1024);
+ chip->voice[osc].state |= V_ON;
+}
+
+
+static TIMER_CALLBACK_PTR( timer_cb_0 )
+{
+ struct ics2115 *chip = param;
+ chip->irq_pend |= 1<<0;
+ recalc_irq(chip);
+}
+
+static TIMER_CALLBACK_PTR( timer_cb_1 )
+{
+ struct ics2115 *chip = param;
+ chip->irq_pend |= 1<<1;
+ recalc_irq(chip);
+}
+
+static void recalc_timer(struct ics2115 *chip, int timer)
+{
+ UINT64 period = 1000000000 * chip->timer[timer].scale*chip->timer[timer].preset / 33868800;
+ if(period)
+ period = 1000000000/62.8206;
+ if(period)
+ {
+ if (ICS2115LOGERROR) logerror("ICS2115: timer %d freq=%fHz\n", timer, 1.0/(period / 1000000000.0));
+ }
+ else
+ {
+ if (ICS2115LOGERROR) logerror("ICS2115: timer %d off\n", timer);
+ }
+
+ if(chip->timer[timer].period != period) {
+ chip->timer[timer].period = period;
+ if(period)
+ timer_adjust_ptr(chip->timer[timer].timer, ATTOTIME_IN_NSEC(period), ATTOTIME_IN_NSEC(period));
+ else
+ timer_adjust_ptr(chip->timer[timer].timer, attotime_never, attotime_zero);
+ }
+}
+
+
+static void ics2115_reg_w(struct ics2115 *chip, UINT8 reg, UINT8 data, int msb)
+{
+ switch(reg) {
+ case 0x00: // [osc] Oscillator Configuration
+ if(msb) {
+ chip->voice[chip->osc].conf = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: conf = %02x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].conf, caller_get_pc());
+ }
+ break;
+
+ case 0x01: // [osc] Wavesample frequency
+ // freq = fc*33075/1024 in 32 voices mode, fc*44100/1024 in 24 voices mode
+ if(msb)
+ chip->voice[chip->osc].fc = (chip->voice[chip->osc].fc & 0xff)|(data << 8);
+ else
+ chip->voice[chip->osc].fc = (chip->voice[chip->osc].fc & 0xff00)|data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: fc = %04x (%dHz) (%04x)\n", chip->osc,
+ chip->voice[chip->osc].fc, chip->voice[chip->osc].fc*33075/1024, caller_get_pc());
+ break;
+
+ case 0x02: // [osc] Wavesample loop start address 19-4
+ if(msb)
+ chip->voice[chip->osc].strth = (chip->voice[chip->osc].strth & 0xff)|(data << 8);
+ else
+ chip->voice[chip->osc].strth = (chip->voice[chip->osc].strth & 0xff00)|data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: strth = %04x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].strth, caller_get_pc());
+ break;
+
+ case 0x03: // [osc] Wavesample loop start address 3-0.3-0
+ if(msb) {
+ chip->voice[chip->osc].strtl = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: strtl = %02x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].strtl, caller_get_pc());
+ }
+ break;
+
+ case 0x04: // [osc] Wavesample loop end address 19-4
+ if(msb)
+ chip->voice[chip->osc].endh = (chip->voice[chip->osc].endh & 0xff)|(data << 8);
+ else
+ chip->voice[chip->osc].endh = (chip->voice[chip->osc].endh & 0xff00)|data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: endh = %04x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].endh, caller_get_pc());
+ break;
+
+ case 0x05: // [osc] Wavesample loop end address 3-0.3-0
+ if(msb) {
+ chip->voice[chip->osc].endl = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: endl = %02x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].endl, caller_get_pc());
+ }
+ break;
+
+ case 0x07: // [osc] Volume Start
+ if(msb) {
+ chip->voice[chip->osc].vstart = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: vstart = %02x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].vstart, caller_get_pc());
+ }
+ break;
+
+ case 0x08: // [osc] Volume End
+ if(msb) {
+ chip->voice[chip->osc].vend = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: vend = %02x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].vend, caller_get_pc());
+ }
+ break;
+
+ case 0x09: // [osc] Volume accumulator
+ if(msb)
+ chip->voice[chip->osc].volacc = (chip->voice[chip->osc].volacc & 0xff)|(data << 8);
+ else
+ chip->voice[chip->osc].volacc = (chip->voice[chip->osc].volacc & 0xff00)|data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: volacc = %04x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].volacc, caller_get_pc());
+ break;
+
+ case 0x0a: // [osc] Wavesample address 19-4
+ if(msb)
+ chip->voice[chip->osc].addrh = (chip->voice[chip->osc].addrh & 0xff)|(data << 8);
+ else
+ chip->voice[chip->osc].addrh = (chip->voice[chip->osc].addrh & 0xff00)|data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: addrh = %04x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].addrh, caller_get_pc());
+ break;
+
+ case 0x0b: // [osc] Wavesample address 3-0.8-0
+ if(msb)
+ chip->voice[chip->osc].addrl = (chip->voice[chip->osc].addrl & 0xff)|(data << 8);
+ else
+ chip->voice[chip->osc].addrl = (chip->voice[chip->osc].addrl & 0xff00)|data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: addrl = %04x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].addrl, caller_get_pc());
+ break;
+
+
+ case 0x0c: // [osc] Pan
+ if(msb) {
+ chip->voice[chip->osc].pan = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: pan = %02x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].pan, caller_get_pc());
+ }
+ break;
+
+ case 0x0d: // [osc] Volume Enveloppe Control
+ if(msb) {
+ chip->voice[chip->osc].vctl = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: vctl = %02x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].vctl, caller_get_pc());
+ }
+ break;
+
+ case 0x10: // [osc] Oscillator Control
+ if(msb) {
+ chip->voice[chip->osc].ctl = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: ctl = %02x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].ctl, caller_get_pc());
+ if(data == 0)
+ keyon(chip, chip->osc);
+ }
+ break;
+
+ case 0x11: // [osc] Wavesample static address 27-20
+ if(msb) {
+ chip->voice[chip->osc].saddr = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: saddr = %02x (%04x)\n", chip->osc,
+ chip->voice[chip->osc].saddr, caller_get_pc());
+ }
+ break;
+
+ case 0x40: // Timer 1 Preset
+ if(!msb) {
+ chip->timer[0].preset = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: t1preset = %d (%04x)\n", chip->timer[0].preset, caller_get_pc());
+ recalc_timer(chip, 0);
+ }
+ break;
+
+ case 0x41: // Timer 2 Preset
+ if(!msb) {
+ chip->timer[1].preset = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: t2preset = %d (%04x)\n", chip->timer[1].preset, caller_get_pc());
+ recalc_timer(chip, 1);
+ }
+ break;
+
+ case 0x42: // Timer 1 Prescaler
+ if(!msb) {
+ chip->timer[0].scale = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: t1scale = %d (%04x)\n", chip->timer[0].scale, caller_get_pc());
+ recalc_timer(chip, 0);
+ }
+ break;
+
+ case 0x43: // Timer 2 Prescaler
+ if(!msb) {
+ chip->timer[1].scale = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: t2scale = %d (%04x)\n", chip->timer[1].scale, caller_get_pc());
+ recalc_timer(chip, 1);
+ }
+ break;
+
+ case 0x4a: // IRQ Enable
+ if(!msb) {
+ chip->irq_en = data;
+ if (ICS2115LOGERROR) logerror("ICS2115: irq_en = %02x (%04x)\n", chip->irq_en, caller_get_pc());
+ recalc_irq(chip);
+ }
+ break;
+
+ case 0x4f: // Oscillator Address being Programmed
+ if(!msb) {
+ chip->osc = data & 31;
+ if (ICS2115LOGERROR) logerror("ICS2115: oscnumber = %d (%04x)\n", chip->osc, caller_get_pc());
+ }
+ break;
+
+ default:
+ if (ICS2115LOGERROR) logerror("ICS2115: write %02x, %02x:%d (%04x)\n", reg, data, msb, caller_get_pc());
+ }
+}
+
+static UINT16 ics2115_reg_r(struct ics2115 *chip, UINT8 reg)
+{
+ switch(reg) {
+ case 0x0d: // [osc] Volume Enveloppe Control
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: read vctl (%04x)\n", chip->osc, caller_get_pc());
+ // res = chip->voice[chip->osc].vctl << 8;
+ // may expect |8 on voice irq with &40 == 0
+ // may expect |8 on reg 0 on voice irq with &80 == 0
+ return 0x100;
+
+ case 0x0f:{// [osc] Interrupt source/oscillator
+ int osc;
+ UINT8 res = 0xff;
+ for(osc = 0; osc < 32; osc++)
+ if(chip->voice[osc].state & V_DONE) {
+ chip->voice[osc].state &= ~V_DONE;
+ if (ICS2115LOGERROR) logerror("ICS2115: KEYOFF %2d\n", osc);
+ recalc_irq(chip);
+ res = 0x40 | osc; // 0x40 ? 0x80 ?
+ break;
+ }
+ if (ICS2115LOGERROR) logerror("ICS2115: read irqv %02x (%04x)\n", res, caller_get_pc());
+ return res << 8;
+ }
+
+ case 0x40: // Timer 0 clear irq
+ // if (ICS2115LOGERROR) logerror("ICS2115: clear timer 0 (%04x)\n", caller_get_pc());
+ chip->irq_pend &= ~(1<<0);
+ recalc_irq(chip);
+ return chip->timer[0].preset;
+
+ case 0x41: // Timer 1 clear irq
+ if (ICS2115LOGERROR) logerror("ICS2115: clear timer 1 (%04x)\n", caller_get_pc());
+ chip->irq_pend &= ~(1<<1);
+ recalc_irq(chip);
+ return chip->timer[1].preset;
+
+ case 0x43: // Timer status
+ // if (ICS2115LOGERROR) logerror("ICS2115: read timer status %02x (%04x)\n", chip->irq_pend & 3, caller_get_pc());
+ return chip->irq_pend & 3;
+
+ case 0x4a: // IRQ Pending
+ if (ICS2115LOGERROR) logerror("ICS2115: read irq_pend %02x (%04x)\n", chip->irq_pend, caller_get_pc());
+ return chip->irq_pend;
+
+ case 0x4b: // Address of Interrupting Oscillator
+ if (ICS2115LOGERROR) logerror("ICS2115: %2d: read intoscaddr (%04x)\n", chip->osc, caller_get_pc());
+ return 0x80;
+
+ case 0x4c: // Chip revision
+ if (ICS2115LOGERROR) logerror("ICS2115: read revision (%04x)\n", caller_get_pc());
+ return 0x01;
+
+ default:
+ if (ICS2115LOGERROR) logerror("ICS2115: read %02x unmapped (%04x)\n", reg, caller_get_pc());
+ return 0;
+ }
+}
+
+
+static void *ics2115_start(int sndindex, int clock, const void *config)
+{
+ struct ics2115 *chip;
+ int i;
+
+ chip = auto_malloc(sizeof(*chip));
+ memset(chip, 0, sizeof(*chip));
+
+ chip->intf = config;
+ chip->index = sndindex;
+ chip->rom = memory_region(chip->intf->region);
+ chip->timer[0].timer = timer_alloc_ptr(timer_cb_0, chip);
+ chip->timer[1].timer = timer_alloc_ptr(timer_cb_1, chip);
+ chip->ulaw = auto_malloc(256*sizeof(INT16));
+ chip->stream = stream_create(0, 2, 33075, chip, update);
+
+ for(i=0; i<256; i++) {
+ UINT8 c = ~i;
+ int v;
+ v = ((c & 15) << 1) + 33;
+ v <<= ((c & 0x70) >> 4);
+ if(c & 0x80)
+ v = 33-v;
+ else
+ v = v-33;
+ chip->ulaw[i] = v;
+ }
+
+ return chip;
+}
+
+READ8_HANDLER( ics2115_r )
+{
+ struct ics2115 *chip = sndti_token(SOUND_ICS2115, 0);
+ switch(offset) {
+ case 0: {
+ UINT8 res = 0;
+ if(chip->irq_on) {
+ int i;
+ res |= 0x80;
+ if(chip->irq_en & chip->irq_pend & 3)
+ res |= 1; // Timer irq
+ for(i=0; i<32; i++)
+ if(chip->voice[i].state & V_DONE) {
+ res |= 2;
+ break;
+ }
+ }
+ // if (ICS2115LOGERROR) logerror("ICS2115: read status %02x (%04x)\n", res, caller_get_pc());
+
+ return res;
+ }
+ case 1:
+ return chip->reg;
+ case 2:
+ return ics2115_reg_r(chip, chip->reg);
+ case 3:
+ default:
+ return ics2115_reg_r(chip, chip->reg) >> 8;
+ }
+}
+
+WRITE8_HANDLER( ics2115_w )
+{
+ struct ics2115 *chip = sndti_token(SOUND_ICS2115, 0);
+ switch(offset) {
+ case 1:
+ chip->reg = data;
+ break;
+ case 2:
+ ics2115_reg_w(chip, chip->reg, data, 0);
+ break;
+ case 3:
+ ics2115_reg_w(chip, chip->reg, data, 1);
+ break;
+ }
+ // if (ICS2115LOGERROR) logerror("ICS2115: wi %d, %02x (%04x)\n", offset, data, caller_get_pc());
+}
+
+void ics2115_reset(void *_chip)
+{
+ struct ics2115 *chip = _chip;
+ chip->irq_en = 0;
+ chip->irq_pend = 0;
+ memset(chip->voice, 0, sizeof(chip->voice));
+ timer_adjust_ptr(chip->timer[0].timer, attotime_never, attotime_zero);
+ timer_adjust_ptr(chip->timer[1].timer, attotime_never, attotime_zero);
+ chip->timer[0].period = 0;
+ chip->timer[1].period = 0;
+ recalc_irq(chip);
+}
+
+
+
+
+/**************************************************************************
+ * Generic get_info
+ **************************************************************************/
+
+static void ics2115_set_info(void *token, UINT32 state, sndinfo *info)
+{
+ switch (state)
+ {
+ /* no parameters to set */
+ }
+}
+
+
+void ics2115_get_info(void *token, UINT32 state, sndinfo *info)
+{
+ switch (state)
+ {
+ /* --- the following bits of info are returned as 64-bit signed integers --- */
+
+ /* --- the following bits of info are returned as pointers to data or functions --- */
+ case SNDINFO_PTR_SET_INFO: info->set_info = ics2115_set_info; break;
+ case SNDINFO_PTR_START: info->start = ics2115_start; break;
+ case SNDINFO_PTR_STOP: /* nothing */ break;
+ case SNDINFO_PTR_RESET: info->reset = ics2115_reset; break;
+
+ /* --- the following bits of info are returned as NULL-terminated strings --- */
+ case SNDINFO_STR_NAME: info->s = "ICS2115"; break;
+ case SNDINFO_STR_CORE_FAMILY: info->s = "ICS"; break;
+ case SNDINFO_STR_CORE_VERSION: info->s = "1.01"; break;
+ case SNDINFO_STR_CORE_FILE: info->s = __FILE__; break;
+ case SNDINFO_STR_CORE_CREDITS: info->s = "Copyright (c) 2004-2007, The MAME Team"; break;
+ }
+}
+