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Diffstat (limited to 'src/emu/sound/2203intf.c')
-rw-r--r--src/emu/sound/2203intf.c348
1 files changed, 348 insertions, 0 deletions
diff --git a/src/emu/sound/2203intf.c b/src/emu/sound/2203intf.c
new file mode 100644
index 00000000000..839802de6eb
--- /dev/null
+++ b/src/emu/sound/2203intf.c
@@ -0,0 +1,348 @@
+#include <math.h>
+#include "sndintrf.h"
+#include "streams.h"
+#include "2203intf.h"
+#include "fm.h"
+
+
+struct ym2203_info
+{
+ sound_stream * stream;
+ emu_timer * timer[2];
+ void * chip;
+ void * psg;
+ const struct YM2203interface *intf;
+};
+
+
+static void psg_set_clock(void *param, int clock)
+{
+ struct ym2203_info *info = param;
+ ay8910_set_clock_ym(info->psg, clock);
+}
+
+static void psg_write(void *param, int address, int data)
+{
+ struct ym2203_info *info = param;
+ ay8910_write_ym(info->psg, address, data);
+}
+
+static int psg_read(void *param)
+{
+ struct ym2203_info *info = param;
+ return ay8910_read_ym(info->psg);
+}
+
+static void psg_reset(void *param)
+{
+ struct ym2203_info *info = param;
+ ay8910_reset_ym(info->psg);
+}
+
+static const struct ssg_callbacks psgintf =
+{
+ psg_set_clock,
+ psg_write,
+ psg_read,
+ psg_reset
+};
+
+/* IRQ Handler */
+static void IRQHandler(void *param,int irq)
+{
+ struct ym2203_info *info = param;
+ if(info->intf->handler) info->intf->handler(irq);
+}
+
+/* Timer overflow callback from timer.c */
+static TIMER_CALLBACK_PTR( timer_callback_2203_0 )
+{
+ struct ym2203_info *info = param;
+ YM2203TimerOver(info->chip,0);
+}
+
+static TIMER_CALLBACK_PTR( timer_callback_2203_1 )
+{
+ struct ym2203_info *info = param;
+ YM2203TimerOver(info->chip,1);
+}
+
+/* update request from fm.c */
+void YM2203UpdateRequest(void *param)
+{
+ struct ym2203_info *info = param;
+ stream_update(info->stream);
+}
+
+
+static void timer_handler(void *param,int c,int count,int clock)
+{
+ struct ym2203_info *info = param;
+ if( count == 0 )
+ { /* Reset FM Timer */
+ timer_enable(info->timer[c], 0);
+ }
+ else
+ { /* Start FM Timer */
+ attotime period = attotime_mul(ATTOTIME_IN_HZ(clock), count);
+ if (!timer_enable(info->timer[c], 1))
+ timer_adjust_ptr(info->timer[c], period, attotime_zero);
+ }
+}
+
+static void ym2203_stream_update(void *param, stream_sample_t **inputs, stream_sample_t **buffer, int length)
+{
+ struct ym2203_info *info = param;
+ YM2203UpdateOne(info->chip, buffer[0], length);
+}
+
+
+static void ym2203_postload(void *param)
+{
+ struct ym2203_info *info = param;
+ YM2203Postload(info->chip);
+}
+
+
+static void *ym2203_start(int sndindex, int clock, const void *config)
+{
+ static const struct YM2203interface generic_2203 = { 0 };
+ const struct YM2203interface *intf = config ? config : &generic_2203;
+ struct ym2203_info *info;
+ int rate = clock/72; /* ??? */
+
+ info = auto_malloc(sizeof(*info));
+ memset(info, 0, sizeof(*info));
+
+ info->intf = intf;
+ info->psg = ay8910_start_ym(SOUND_YM2203, sndindex, clock, 3, intf->portAread, intf->portBread, intf->portAwrite, intf->portBwrite);
+ if (!info->psg) return NULL;
+
+ /* Timer Handler set */
+ info->timer[0] = timer_alloc_ptr(timer_callback_2203_0, info);
+ info->timer[1] = timer_alloc_ptr(timer_callback_2203_1, info);
+
+ /* stream system initialize */
+ info->stream = stream_create(0,1,rate,info,ym2203_stream_update);
+
+ /* Initialize FM emurator */
+ info->chip = YM2203Init(info,sndindex,clock,rate,timer_handler,IRQHandler,&psgintf);
+
+ state_save_register_func_postload_ptr(ym2203_postload, info);
+
+ if (info->chip)
+ return info;
+
+ /* error */
+ /* stream close */
+ return NULL;
+}
+
+static void ym2203_stop(void *token)
+{
+ struct ym2203_info *info = token;
+ YM2203Shutdown(info->chip);
+ ay8910_stop_ym(info->psg);
+}
+
+static void ym2203_reset(void *token)
+{
+ struct ym2203_info *info = token;
+ YM2203ResetChip(info->chip);
+}
+
+
+
+READ8_HANDLER( YM2203_status_port_0_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 0); return YM2203Read(info->chip,0); }
+READ8_HANDLER( YM2203_status_port_1_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 1); return YM2203Read(info->chip,0); }
+READ8_HANDLER( YM2203_status_port_2_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 2); return YM2203Read(info->chip,0); }
+READ8_HANDLER( YM2203_status_port_3_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 3); return YM2203Read(info->chip,0); }
+READ8_HANDLER( YM2203_status_port_4_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 4); return YM2203Read(info->chip,0); }
+
+READ8_HANDLER( YM2203_read_port_0_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 0); return YM2203Read(info->chip,1); }
+READ8_HANDLER( YM2203_read_port_1_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 1); return YM2203Read(info->chip,1); }
+READ8_HANDLER( YM2203_read_port_2_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 2); return YM2203Read(info->chip,1); }
+READ8_HANDLER( YM2203_read_port_3_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 3); return YM2203Read(info->chip,1); }
+READ8_HANDLER( YM2203_read_port_4_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 4); return YM2203Read(info->chip,1); }
+
+WRITE8_HANDLER( YM2203_control_port_0_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 0);
+ YM2203Write(info->chip,0,data);
+}
+WRITE8_HANDLER( YM2203_control_port_1_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 1);
+ YM2203Write(info->chip,0,data);
+}
+WRITE8_HANDLER( YM2203_control_port_2_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 2);
+ YM2203Write(info->chip,0,data);
+}
+WRITE8_HANDLER( YM2203_control_port_3_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 3);
+ YM2203Write(info->chip,0,data);
+}
+WRITE8_HANDLER( YM2203_control_port_4_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 4);
+ YM2203Write(info->chip,0,data);
+}
+
+WRITE8_HANDLER( YM2203_write_port_0_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 0);
+ YM2203Write(info->chip,1,data);
+}
+WRITE8_HANDLER( YM2203_write_port_1_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 1);
+ YM2203Write(info->chip,1,data);
+}
+WRITE8_HANDLER( YM2203_write_port_2_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 2);
+ YM2203Write(info->chip,1,data);
+}
+WRITE8_HANDLER( YM2203_write_port_3_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 3);
+ YM2203Write(info->chip,1,data);
+}
+WRITE8_HANDLER( YM2203_write_port_4_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 4);
+ YM2203Write(info->chip,1,data);
+}
+
+
+READ16_HANDLER( YM2203_status_port_0_lsb_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 0); return YM2203Read(info->chip,0) | 0xff00; }
+READ16_HANDLER( YM2203_status_port_1_lsb_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 1); return YM2203Read(info->chip,0) | 0xff00; }
+READ16_HANDLER( YM2203_status_port_2_lsb_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 2); return YM2203Read(info->chip,0) | 0xff00; }
+READ16_HANDLER( YM2203_status_port_3_lsb_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 3); return YM2203Read(info->chip,0) | 0xff00; }
+READ16_HANDLER( YM2203_status_port_4_lsb_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 4); return YM2203Read(info->chip,0) | 0xff00; }
+
+READ16_HANDLER( YM2203_read_port_0_lsb_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 0); return YM2203Read(info->chip,1) | 0xff00; }
+READ16_HANDLER( YM2203_read_port_1_lsb_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 1); return YM2203Read(info->chip,1) | 0xff00; }
+READ16_HANDLER( YM2203_read_port_2_lsb_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 2); return YM2203Read(info->chip,1) | 0xff00; }
+READ16_HANDLER( YM2203_read_port_3_lsb_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 3); return YM2203Read(info->chip,1) | 0xff00; }
+READ16_HANDLER( YM2203_read_port_4_lsb_r ) { struct ym2203_info *info = sndti_token(SOUND_YM2203, 4); return YM2203Read(info->chip,1) | 0xff00; }
+
+WRITE16_HANDLER( YM2203_control_port_0_lsb_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 0);
+ if (ACCESSING_LSB)
+ YM2203Write(info->chip,0,data);
+}
+WRITE16_HANDLER( YM2203_control_port_1_lsb_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 1);
+ if (ACCESSING_LSB)
+ YM2203Write(info->chip,0,data);
+}
+WRITE16_HANDLER( YM2203_control_port_2_lsb_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 2);
+ if (ACCESSING_LSB)
+ YM2203Write(info->chip,0,data);
+}
+WRITE16_HANDLER( YM2203_control_port_3_lsb_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 3);
+ if (ACCESSING_LSB)
+ YM2203Write(info->chip,0,data);
+}
+WRITE16_HANDLER( YM2203_control_port_4_lsb_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 4);
+ if (ACCESSING_LSB)
+ YM2203Write(info->chip,0,data);
+}
+
+WRITE16_HANDLER( YM2203_write_port_0_lsb_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 0);
+ if (ACCESSING_LSB)
+ YM2203Write(info->chip,1,data);
+}
+WRITE16_HANDLER( YM2203_write_port_1_lsb_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 1);
+ if (ACCESSING_LSB)
+ YM2203Write(info->chip,1,data);
+}
+WRITE16_HANDLER( YM2203_write_port_2_lsb_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 2);
+ if (ACCESSING_LSB)
+ YM2203Write(info->chip,1,data);
+}
+WRITE16_HANDLER( YM2203_write_port_3_lsb_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 3);
+ if (ACCESSING_LSB)
+ YM2203Write(info->chip,1,data);
+}
+WRITE16_HANDLER( YM2203_write_port_4_lsb_w )
+{
+ struct ym2203_info *info = sndti_token(SOUND_YM2203, 4);
+ if (ACCESSING_LSB)
+ YM2203Write(info->chip,1,data);
+}
+
+
+WRITE8_HANDLER( YM2203_word_0_w )
+{
+ if (offset)
+ YM2203_write_port_0_w(0,data);
+ else
+ YM2203_control_port_0_w(0,data);
+}
+
+WRITE8_HANDLER( YM2203_word_1_w )
+{
+ if (offset)
+ YM2203_write_port_1_w(0,data);
+ else
+ YM2203_control_port_1_w(0,data);
+}
+
+
+
+
+
+/**************************************************************************
+ * Generic get_info
+ **************************************************************************/
+
+static void ym2203_set_info(void *token, UINT32 state, sndinfo *info)
+{
+ switch (state)
+ {
+ /* no parameters to set */
+ }
+}
+
+
+void ym2203_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 = ym2203_set_info; break;
+ case SNDINFO_PTR_START: info->start = ym2203_start; break;
+ case SNDINFO_PTR_STOP: info->stop = ym2203_stop; break;
+ case SNDINFO_PTR_RESET: info->reset = ym2203_reset; break;
+
+ /* --- the following bits of info are returned as NULL-terminated strings --- */
+ case SNDINFO_STR_NAME: info->s = "YM2203"; break;
+ case SNDINFO_STR_CORE_FAMILY: info->s = "Yamaha FM"; break;
+ case SNDINFO_STR_CORE_VERSION: info->s = "1.0"; break;
+ case SNDINFO_STR_CORE_FILE: info->s = __FILE__; break;
+ case SNDINFO_STR_CORE_CREDITS: info->s = "Copyright (c) 2004, The MAME Team"; break;
+ }
+}