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Diffstat (limited to 'src/emu/sound/2612intf.c')
-rw-r--r--src/emu/sound/2612intf.c415
1 files changed, 415 insertions, 0 deletions
diff --git a/src/emu/sound/2612intf.c b/src/emu/sound/2612intf.c
new file mode 100644
index 00000000000..fbc9275f4ef
--- /dev/null
+++ b/src/emu/sound/2612intf.c
@@ -0,0 +1,415 @@
+/***************************************************************************
+
+ 2612intf.c
+
+ The YM2612 emulator supports up to 2 chips.
+ Each chip has the following connections:
+ - Status Read / Control Write A
+ - Port Read / Data Write A
+ - Control Write B
+ - Data Write B
+
+***************************************************************************/
+
+#include "sndintrf.h"
+#include "streams.h"
+#include "sound/fm.h"
+#include "sound/2612intf.h"
+
+
+struct ym2612_info
+{
+ sound_stream * stream;
+ emu_timer * timer[2];
+ void * chip;
+ const struct YM2612interface *intf;
+};
+
+/*------------------------- TM2612 -------------------------------*/
+/* IRQ Handler */
+static void IRQHandler(void *param,int irq)
+{
+ struct ym2612_info *info = param;
+ if(info->intf->handler) info->intf->handler(irq);
+}
+
+/* Timer overflow callback from timer.c */
+static TIMER_CALLBACK_PTR( timer_callback_2612_0 )
+{
+ struct ym2612_info *info = param;
+ YM2612TimerOver(info->chip,0);
+}
+
+static TIMER_CALLBACK_PTR( timer_callback_2612_1 )
+{
+ struct ym2612_info *info = param;
+ YM2612TimerOver(info->chip,1);
+}
+
+static void timer_handler(void *param,int c,int count,int clock)
+{
+ struct ym2612_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);
+ }
+}
+
+/* update request from fm.c */
+void YM2612UpdateRequest(void *param)
+{
+ struct ym2612_info *info = param;
+ stream_update(info->stream);
+}
+
+/***********************************************************/
+/* YM2612 */
+/***********************************************************/
+
+static void ym2612_stream_update(void *param, stream_sample_t **inputs, stream_sample_t **buffers, int length)
+{
+ struct ym2612_info *info = param;
+ YM2612UpdateOne(info->chip, buffers, length);
+}
+
+
+static void ym2612_postload(void *param)
+{
+ struct ym2612_info *info = param;
+ YM2612Postload(info->chip);
+}
+
+
+static void *ym2612_start(int sndindex, int clock, const void *config)
+{
+ static const struct YM2612interface dummy = { 0 };
+ struct ym2612_info *info;
+ int rate = clock/72;
+
+ info = auto_malloc(sizeof(*info));
+ memset(info, 0, sizeof(*info));
+
+ info->intf = config ? config : &dummy;
+
+ /* FM init */
+ /* Timer Handler set */
+ info->timer[0] = timer_alloc_ptr(timer_callback_2612_0, info);
+ info->timer[1] = timer_alloc_ptr(timer_callback_2612_1, info);
+
+ /* stream system initialize */
+ info->stream = stream_create(0,2,rate,info,ym2612_stream_update);
+
+ /**** initialize YM2612 ****/
+ info->chip = YM2612Init(info,sndindex,clock,rate,timer_handler,IRQHandler);
+
+ state_save_register_func_postload_ptr(ym2612_postload, info);
+
+ if (info->chip)
+ return info;
+ /* error */
+ return NULL;
+}
+
+
+static void ym2612_stop(void *token)
+{
+ struct ym2612_info *info = token;
+ YM2612Shutdown(info->chip);
+}
+
+static void ym2612_reset(void *token)
+{
+ struct ym2612_info *info = token;
+ YM2612ResetChip(info->chip);
+}
+
+
+/************************************************/
+/* Status Read for YM2612 - Chip 0 */
+/************************************************/
+READ8_HANDLER( YM2612_status_port_0_A_r )
+{
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,0);
+ return YM2612Read(info->chip,0);
+}
+
+READ8_HANDLER( YM2612_status_port_0_B_r )
+{
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,0);
+ return YM2612Read(info->chip,2);
+}
+
+/************************************************/
+/* Status Read for YM2612 - Chip 1 */
+/************************************************/
+READ8_HANDLER( YM2612_status_port_1_A_r ) {
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,1);
+ return YM2612Read(info->chip,0);
+}
+
+READ8_HANDLER( YM2612_status_port_1_B_r ) {
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,1);
+ return YM2612Read(info->chip,2);
+}
+
+/************************************************/
+/* Port Read for YM2612 - Chip 0 */
+/************************************************/
+READ8_HANDLER( YM2612_read_port_0_r ){
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,0);
+ return YM2612Read(info->chip,1);
+}
+
+/************************************************/
+/* Port Read for YM2612 - Chip 1 */
+/************************************************/
+READ8_HANDLER( YM2612_read_port_1_r ){
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,1);
+ return YM2612Read(info->chip,1);
+}
+
+/************************************************/
+/* Control Write for YM2612 - Chip 0 */
+/* Consists of 2 addresses */
+/************************************************/
+WRITE8_HANDLER( YM2612_control_port_0_A_w )
+{
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,0);
+ YM2612Write(info->chip,0,data);
+}
+
+WRITE8_HANDLER( YM2612_control_port_0_B_w )
+{
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,0);
+ YM2612Write(info->chip,2,data);
+}
+
+/************************************************/
+/* Control Write for YM2612 - Chip 1 */
+/* Consists of 2 addresses */
+/************************************************/
+WRITE8_HANDLER( YM2612_control_port_1_A_w ){
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,1);
+ YM2612Write(info->chip,0,data);
+}
+
+WRITE8_HANDLER( YM2612_control_port_1_B_w ){
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,1);
+ YM2612Write(info->chip,2,data);
+}
+
+/************************************************/
+/* Data Write for YM2612 - Chip 0 */
+/* Consists of 2 addresses */
+/************************************************/
+WRITE8_HANDLER( YM2612_data_port_0_A_w )
+{
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,0);
+ YM2612Write(info->chip,1,data);
+}
+
+WRITE8_HANDLER( YM2612_data_port_0_B_w )
+{
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,0);
+ YM2612Write(info->chip,3,data);
+}
+
+/************************************************/
+/* Data Write for YM2612 - Chip 1 */
+/* Consists of 2 addresses */
+/************************************************/
+WRITE8_HANDLER( YM2612_data_port_1_A_w ){
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,1);
+ YM2612Write(info->chip,1,data);
+}
+WRITE8_HANDLER( YM2612_data_port_1_B_w ){
+ struct ym2612_info *info = sndti_token(SOUND_YM2612,1);
+ YM2612Write(info->chip,3,data);
+}
+
+#if BUILD_YM3438
+
+/************************************************/
+/* Status Read for YM3438 - Chip 0 */
+/************************************************/
+READ8_HANDLER( YM3438_status_port_0_A_r )
+{
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,0);
+ return YM2612Read(info->chip,0);
+}
+
+READ8_HANDLER( YM3438_status_port_0_B_r )
+{
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,0);
+ return YM2612Read(info->chip,2);
+}
+
+/************************************************/
+/* Status Read for YM3438 - Chip 1 */
+/************************************************/
+READ8_HANDLER( YM3438_status_port_1_A_r ) {
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,1);
+ return YM2612Read(info->chip,0);
+}
+
+READ8_HANDLER( YM3438_status_port_1_B_r ) {
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,1);
+ return YM2612Read(info->chip,2);
+}
+
+/************************************************/
+/* Port Read for YM3438 - Chip 0 */
+/************************************************/
+READ8_HANDLER( YM3438_read_port_0_r ){
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,0);
+ return YM2612Read(info->chip,1);
+}
+
+/************************************************/
+/* Port Read for YM3438 - Chip 1 */
+/************************************************/
+READ8_HANDLER( YM3438_read_port_1_r ){
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,1);
+ return YM2612Read(info->chip,1);
+}
+
+/************************************************/
+/* Control Write for YM3438 - Chip 0 */
+/* Consists of 2 addresses */
+/************************************************/
+WRITE8_HANDLER( YM3438_control_port_0_A_w )
+{
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,0);
+ YM2612Write(info->chip,0,data);
+}
+
+WRITE8_HANDLER( YM3438_control_port_0_B_w )
+{
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,0);
+ YM2612Write(info->chip,2,data);
+}
+
+/************************************************/
+/* Control Write for YM3438 - Chip 1 */
+/* Consists of 2 addresses */
+/************************************************/
+WRITE8_HANDLER( YM3438_control_port_1_A_w ){
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,1);
+ YM2612Write(info->chip,0,data);
+}
+
+WRITE8_HANDLER( YM3438_control_port_1_B_w ){
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,1);
+ YM2612Write(info->chip,2,data);
+}
+
+/************************************************/
+/* Data Write for YM3438 - Chip 0 */
+/* Consists of 2 addresses */
+/************************************************/
+WRITE8_HANDLER( YM3438_data_port_0_A_w )
+{
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,0);
+ YM2612Write(info->chip,1,data);
+}
+
+WRITE8_HANDLER( YM3438_data_port_0_B_w )
+{
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,0);
+ YM2612Write(info->chip,3,data);
+}
+
+/************************************************/
+/* Data Write for YM3438 - Chip 1 */
+/* Consists of 2 addresses */
+/************************************************/
+WRITE8_HANDLER( YM3438_data_port_1_A_w ){
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,1);
+ YM2612Write(info->chip,1,data);
+}
+WRITE8_HANDLER( YM3438_data_port_1_B_w ){
+ struct ym2612_info *info = sndti_token(SOUND_YM3438,1);
+ YM2612Write(info->chip,3,data);
+}
+
+#endif
+
+/**************** end of file ****************/
+
+/**************************************************************************
+ * Generic get_info
+ **************************************************************************/
+
+static void ym2612_set_info(void *token, UINT32 state, sndinfo *info)
+{
+ switch (state)
+ {
+ /* no parameters to set */
+ }
+}
+
+
+void ym2612_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 = ym2612_set_info; break;
+ case SNDINFO_PTR_START: info->start = ym2612_start; break;
+ case SNDINFO_PTR_STOP: info->stop = ym2612_stop; break;
+ case SNDINFO_PTR_RESET: info->reset = ym2612_reset; break;
+
+ /* --- the following bits of info are returned as NULL-terminated strings --- */
+ case SNDINFO_STR_NAME: info->s = "YM2612"; 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;
+ }
+}
+
+/**************************************************************************
+ * Generic get_info
+ **************************************************************************/
+
+#if BUILD_YM3438
+
+static void ym3438_set_info(void *token, UINT32 state, sndinfo *info)
+{
+ switch (state)
+ {
+ /* no parameters to set */
+ }
+}
+
+
+void ym3438_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 = ym3438_set_info; break;
+ case SNDINFO_PTR_START: info->start = ym2612_start; break;
+ case SNDINFO_PTR_STOP: info->stop = ym2612_stop; break;
+ case SNDINFO_PTR_RESET: info->reset = ym2612_reset; break;
+
+ /* --- the following bits of info are returned as NULL-terminated strings --- */
+ case SNDINFO_STR_NAME: info->s = "YM3438"; 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;
+ }
+}
+
+#endif