diff options
Diffstat (limited to 'src/emu/sound/5110intf.c')
-rw-r--r-- | src/emu/sound/5110intf.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/src/emu/sound/5110intf.c b/src/emu/sound/5110intf.c new file mode 100644 index 00000000000..cfc22302e7a --- /dev/null +++ b/src/emu/sound/5110intf.c @@ -0,0 +1,243 @@ +/****************************************************************************** + + TMS5110 interface + + slightly modified from 5220intf by Jarek Burczynski + + Written for MAME by Frank Palazzolo + With help from Neill Corlett + Additional tweaking by Aaron Giles + +******************************************************************************/ + +#include <math.h> + +#include "sndintrf.h" +#include "streams.h" +#include "tms5110.h" +#include "5110intf.h" + + +#define MAX_SAMPLE_CHUNK 10000 + + +/* the state of the streamed output */ +struct tms5110_info +{ + const struct TMS5110interface *intf; + sound_stream *stream; + void *chip; +}; + + +/* static function prototypes */ +static void tms5110_update(void *param, stream_sample_t **inputs, stream_sample_t **buffer, int length); + + + +/****************************************************************************** + + tms5110_start -- allocate buffers and reset the 5110 + +******************************************************************************/ + +static void *tms5110_start(int sndindex, int clock, const void *config) +{ + static const struct TMS5110interface dummy = { 0 }; + struct tms5110_info *info; + + info = auto_malloc(sizeof(*info)); + memset(info, 0, sizeof(*info)); + info->intf = config ? config : &dummy; + + info->chip = tms5110_create(sndindex); + if (!info->chip) + return NULL; + sndintrf_register_token(info); + + /* initialize a stream */ + info->stream = stream_create(0, 1, clock / 80, info, tms5110_update); + + if (info->intf->M0_callback==NULL) + { + logerror("\n file: 5110intf.c, tms5110_start(), line 53:\n Missing _mandatory_ 'M0_callback' function pointer in the TMS5110 interface\n This function is used by TMS5110 to call for a single bits\n needed to generate the speech\n Aborting startup...\n"); + return NULL; + } + tms5110_set_M0_callback(info->chip, info->intf->M0_callback ); + + /* reset the 5110 */ + tms5110_reset_chip(info->chip); + + /* request a sound channel */ + return info; +} + + + +/****************************************************************************** + + tms5110_stop -- free buffers + +******************************************************************************/ + +static void tms5110_stop(void *chip) +{ + struct tms5110_info *info = chip; + tms5110_destroy(info->chip); +} + + +static void tms5110_reset(void *chip) +{ + struct tms5110_info *info = chip; + tms5110_reset_chip(info->chip); +} + + + +/****************************************************************************** + + tms5110_CTL_w -- write Control Command to the sound chip +commands like Speech, Reset, etc., are loaded into the chip via the CTL pins + +******************************************************************************/ + +WRITE8_HANDLER( tms5110_CTL_w ) +{ + struct tms5110_info *info = sndti_token(SOUND_TMS5110, 0); + + /* bring up to date first */ + stream_update(info->stream); + tms5110_CTL_set(info->chip, data); +} + +/****************************************************************************** + + tms5110_PDC_w -- write to PDC pin on the sound chip + +******************************************************************************/ + +WRITE8_HANDLER( tms5110_PDC_w ) +{ + struct tms5110_info *info = sndti_token(SOUND_TMS5110, 0); + + /* bring up to date first */ + stream_update(info->stream); + tms5110_PDC_set(info->chip, data); +} + + + +/****************************************************************************** + + tms5110_status_r -- read status from the sound chip + +******************************************************************************/ + +READ8_HANDLER( tms5110_status_r ) +{ + struct tms5110_info *info = sndti_token(SOUND_TMS5110, 0); + + /* bring up to date first */ + stream_update(info->stream); + return tms5110_status_read(info->chip); +} + + + +/****************************************************************************** + + tms5110_ready_r -- return the not ready status from the sound chip + +******************************************************************************/ + +int tms5110_ready_r(void) +{ + struct tms5110_info *info = sndti_token(SOUND_TMS5110, 0); + + /* bring up to date first */ + stream_update(info->stream); + return tms5110_ready_read(info->chip); +} + + + +/****************************************************************************** + + tms5110_update -- update the sound chip so that it is in sync with CPU execution + +******************************************************************************/ + +static void tms5110_update(void *param, stream_sample_t **inputs, stream_sample_t **_buffer, int length) +{ + struct tms5110_info *info = param; + INT16 sample_data[MAX_SAMPLE_CHUNK]; + stream_sample_t *buffer = _buffer[0]; + + /* loop while we still have samples to generate */ + while (length) + { + int samples = (length > MAX_SAMPLE_CHUNK) ? MAX_SAMPLE_CHUNK : length; + int index; + + /* generate the samples and copy to the target buffer */ + tms5110_process(info->chip, sample_data, samples); + for (index = 0; index < samples; index++) + *buffer++ = sample_data[index]; + + /* account for the samples */ + length -= samples; + } +} + + + +/****************************************************************************** + + tms5110_set_frequency -- adjusts the playback frequency + +******************************************************************************/ + +void tms5110_set_frequency(int frequency) +{ + struct tms5110_info *info = sndti_token(SOUND_TMS5110, 0); + stream_set_sample_rate(info->stream, frequency / 80); +} + + + + +/************************************************************************** + * Generic get_info + **************************************************************************/ + +static void tms5110_set_info(void *token, UINT32 state, sndinfo *info) +{ + switch (state) + { + /* no parameters to set */ + } +} + + +void tms5110_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 = tms5110_set_info; break; + case SNDINFO_PTR_START: info->start = tms5110_start; break; + case SNDINFO_PTR_STOP: info->stop = tms5110_stop; break; + case SNDINFO_PTR_RESET: info->reset = tms5110_reset; break; + + /* --- the following bits of info are returned as NULL-terminated strings --- */ + case SNDINFO_STR_NAME: info->s = "TMS5110"; break; + case SNDINFO_STR_CORE_FAMILY: info->s = "TI Speech"; 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; + } +} + |