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Added CDP1863 sound device for MESS.
This commit is contained in:
Curt Coder
parent
7d526a162a
commit
32e04ee9ef
5 changed files with 314 additions and 0 deletions
2
.gitattributes
vendored
2
.gitattributes
vendored
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@ -793,6 +793,8 @@ src/emu/sound/c6280.c svneol=native#text/plain
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src/emu/sound/c6280.h svneol=native#text/plain
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src/emu/sound/cdda.c svneol=native#text/plain
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src/emu/sound/cdda.h svneol=native#text/plain
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src/emu/sound/cdp1863.c svneol=native#text/plain
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src/emu/sound/cdp1863.h svneol=native#text/plain
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src/emu/sound/cdp1869.c svneol=native#text/plain
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src/emu/sound/cdp1869.h svneol=native#text/plain
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src/emu/sound/cem3394.c svneol=native#text/plain
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231
src/emu/sound/cdp1863.c
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src/emu/sound/cdp1863.c
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@ -0,0 +1,231 @@
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/**********************************************************************
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RCA CDP1863 CMOS 8-Bit Programmable Frequency Generator emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************/
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/*
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TODO:
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- what happens if you connect both clocks?
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*/
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#include "driver.h"
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#include "sndintrf.h"
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#include "streams.h"
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#include "cpu/cdp1802/cdp1802.h"
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#include "cdp1863.h"
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/***************************************************************************
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PARAMETERS
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***************************************************************************/
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#define CDP1863_DEFAULT_LATCH 0x35
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/***************************************************************************
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TYPE DEFINITIONS
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***************************************************************************/
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typedef struct _cdp1863_t cdp1863_t;
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struct _cdp1863_t
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{
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int clock1; /* clock 1 */
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int clock2; /* clock 2 */
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sound_stream *stream; /* sound output */
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/* sound state */
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int oe; /* output enable */
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int latch; /* sound latch */
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INT16 signal; /* current signal */
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int incr; /* initial wave state */
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};
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/***************************************************************************
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INLINE FUNCTIONS
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***************************************************************************/
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INLINE cdp1863_t *get_safe_token(const device_config *device)
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{
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assert(device != NULL);
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assert(device->token != NULL);
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return (cdp1863_t *)device->token;
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}
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INLINE cdp1863_config *get_safe_config(const device_config *device)
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{
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assert(device != NULL);
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return (cdp1863_config *)device->inline_config;
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}
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/***************************************************************************
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IMPLEMENTATION
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***************************************************************************/
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/*-------------------------------------------------
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cdp1863_str_w - tone latch write
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-------------------------------------------------*/
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WRITE8_DEVICE_HANDLER( cdp1863_str_w )
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{
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cdp1863_t *cdp1863 = get_safe_token(device);
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cdp1863->latch = data;
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}
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/*-------------------------------------------------
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cdp1863_oe_w - output enable write
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------------------------------------------------*/
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WRITE_LINE_DEVICE_HANDLER( cdp1863_oe_w )
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{
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cdp1863_t *cdp1863 = get_safe_token(device);
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cdp1863->oe = state;
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}
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/*-------------------------------------------------
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cdp1863_set_clk1 - set clock 1 frequency
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------------------------------------------------*/
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void cdp1863_set_clk1(const device_config *device, int frequency)
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{
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cdp1863_t *cdp1863 = get_safe_token(device);
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cdp1863->clock1 = frequency;
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}
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/*-------------------------------------------------
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cdp1863_set_clk2 - set clock 2 frequency
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------------------------------------------------*/
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void cdp1863_set_clk2(const device_config *device, int frequency)
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{
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cdp1863_t *cdp1863 = get_safe_token(device);
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cdp1863->clock2 = frequency;
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}
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/*-------------------------------------------------
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STREAM_UPDATE( cdp1863_stream_update )
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-------------------------------------------------*/
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static STREAM_UPDATE( cdp1863_stream_update )
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{
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cdp1863_t *cdp1863 = get_safe_token(device);
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INT16 signal = cdp1863->signal;
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stream_sample_t *buffer = outputs[0];
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memset( buffer, 0, samples * sizeof(*buffer) );
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if (cdp1863->oe)
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{
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double frequency;
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int rate = device->machine->sample_rate / 2;
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/* get progress through wave */
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int incr = cdp1863->incr;
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if (cdp1863->clock1 > 0)
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{
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/* CLK1 is pre-divided by 4 */
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frequency = cdp1863->clock1 / 4 / (cdp1863->latch + 1) / 2;
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}
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else
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{
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/* CLK2 is pre-divided by 8 */
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frequency = cdp1863->clock2 / 8 / (cdp1863->latch + 1) / 2;
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}
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if (signal < 0)
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{
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signal = -0x7fff;
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}
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else
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{
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signal = 0x7fff;
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}
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while( samples-- > 0 )
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{
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*buffer++ = signal;
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incr -= frequency;
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while( incr < 0 )
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{
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incr += rate;
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signal = -signal;
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}
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}
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/* store progress through wave */
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cdp1863->incr = incr;
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cdp1863->signal = signal;
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}
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}
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/*-------------------------------------------------
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DEVICE_START( cdp1863 )
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-------------------------------------------------*/
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static DEVICE_START( cdp1863 )
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{
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cdp1863_t *cdp1863 = get_safe_token(device);
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const cdp1863_config *config = get_safe_config(device);
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/* set initial values */
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cdp1863->stream = stream_create(device, 0, 1, device->machine->sample_rate, cdp1863, cdp1863_stream_update);
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cdp1863->clock1 = device->clock;
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cdp1863->clock2 = config->clock2;
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cdp1863->oe = 1;
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/* register for state saving */
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state_save_register_device_item(device, 0, cdp1863->clock1);
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state_save_register_device_item(device, 0, cdp1863->clock2);
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state_save_register_device_item(device, 0, cdp1863->oe);
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state_save_register_device_item(device, 0, cdp1863->latch);
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state_save_register_device_item(device, 0, cdp1863->signal);
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state_save_register_device_item(device, 0, cdp1863->incr);
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}
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/*-------------------------------------------------
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DEVICE_RESET( cdp1863 )
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-------------------------------------------------*/
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static DEVICE_RESET( cdp1863 )
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{
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cdp1863_t *cdp1863 = get_safe_token(device);
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cdp1863->latch = CDP1863_DEFAULT_LATCH;
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}
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/*-------------------------------------------------
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DEVICE_GET_INFO( cdp1863 )
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-------------------------------------------------*/
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DEVICE_GET_INFO( cdp1863 )
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{
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switch (state)
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{
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/* --- the following bits of info are returned as 64-bit signed integers --- */
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case DEVINFO_INT_TOKEN_BYTES: info->i = sizeof(cdp1863_t); break;
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case DEVINFO_INT_INLINE_CONFIG_BYTES: info->i = sizeof(cdp1863_config); break;
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/* --- the following bits of info are returned as pointers to data or functions --- */
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case DEVINFO_FCT_START: info->start = DEVICE_START_NAME(cdp1863); break;
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case DEVINFO_FCT_STOP: /* Nothing */ break;
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case DEVINFO_FCT_RESET: info->reset = DEVICE_RESET_NAME(cdp1863); break;
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/* --- the following bits of info are returned as NULL-terminated strings --- */
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case DEVINFO_STR_NAME: strcpy(info->s, "RCA CDP1863"); break;
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case DEVINFO_STR_FAMILY: strcpy(info->s, "RCA CDP1800"); break;
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case DEVINFO_STR_VERSION: strcpy(info->s, "1.0"); break;
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case DEVINFO_STR_SOURCE_FILE: strcpy(info->s, __FILE__); break;
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case DEVINFO_STR_CREDITS: strcpy(info->s, "Copyright MESS Team"); break;
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}
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}
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68
src/emu/sound/cdp1863.h
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68
src/emu/sound/cdp1863.h
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@ -0,0 +1,68 @@
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/**********************************************************************
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RCA CDP1863 CMOS 8-Bit Programmable Frequency Generator emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************
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_____ _____
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_RESET 1 |* \_/ | 16 Vdd
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CLK 2 2 | | 15 OE
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CLK 1 3 | | 14 OUT
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STR 4 | CDP1863 | 13 DO7
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DI0 5 | | 12 DI6
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DI1 6 | | 11 DI5
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DI2 7 | | 10 DI4
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Vss 8 |_____________| 9 DI3
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**********************************************************************/
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#ifndef __CDP1863__
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#define __CDP1863__
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/***************************************************************************
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MACROS / CONSTANTS
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***************************************************************************/
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#define CDP1863 DEVICE_GET_INFO_NAME(cdp1863)
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#define SOUND_CDP1863 CDP1863
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#define MDRV_CDP1863_ADD(_tag, _clock1, _clock2) \
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MDRV_DEVICE_ADD(_tag, SOUND, _clock1) \
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MDRV_DEVICE_CONFIG_DATAPTR(cdp1863_config, type, SOUND_CDP1863) \
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MDRV_DEVICE_CONFIG_DATA32(cdp1863_config, clock2, _clock2)
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#define CDP1863_INTERFACE(name) \
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const cdp1863_interface (name) =
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/***************************************************************************
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TYPE DEFINITIONS
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***************************************************************************/
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typedef struct _cdp1863_config cdp1863_config;
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struct _cdp1863_config
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{
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const sound_config *type;
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int clock2; /* the clock 2 (pin 2) of the chip */
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};
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/***************************************************************************
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PROTOTYPES
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***************************************************************************/
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/* device interface */
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DEVICE_GET_INFO( cdp1863 );
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/* load tone latch */
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WRITE8_DEVICE_HANDLER( cdp1863_str_w );
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/* output enable */
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WRITE_LINE_DEVICE_HANDLER( cdp1863_oe_w );
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/* clock setters */
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void cdp1863_set_clk1(const device_config *device, int frequency) ATTR_NONNULL(1);
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void cdp1863_set_clk2(const device_config *device, int frequency) ATTR_NONNULL(1);
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#endif
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@ -193,6 +193,18 @@ endif
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#-------------------------------------------------
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# RCA CDP1863
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#-------------------------------------------------
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SOUNDDEFS += -DHAS_CDP1863=$(if $(filter CDP1863,$(SOUNDS)),1,0)
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ifneq ($(filter CDP1863,$(SOUNDS)),)
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SOUNDOBJS += $(SOUNDOBJ)/cdp1863.o
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endif
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#-------------------------------------------------
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# RCA CDP1869
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#-------------------------------------------------
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@ -213,6 +213,7 @@ SOUNDS += WAVE
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#SOUNDS += SID8580
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SOUNDS += SP0256
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SOUNDS += DIGITALKER
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SOUNDS += CDP1863
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#-------------------------------------------------
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