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Clean up formatting on the AD1848 and WSS code

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This commit is contained in:
RichardG867
2021-05-20 23:17:07 -03:00
parent 7461108f38
commit ef4c900b8f
3 changed files with 520 additions and 456 deletions
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82
src/include/86box/snd_ad1848.h
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@@ -1,45 +1,65 @@
/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* Definitions for AD1848 / CS4248 / CS4231 (Windows Sound System) codec emulation.
*
*
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* TheCollector1995, <mariogplayer@gmail.com>
*
* Copyright 2008-2020 Sarah Walker.
* Copyright 2018-2020 TheCollector1995.
*/
#define AD1848_TYPE_DEFAULT 0
#define AD1848_TYPE_CS4248 1
#define AD1848_TYPE_CS4231 2
#define AD1848_TYPE_CS4236 3
typedef struct ad1848_t
{
int index;
uint8_t regs[32]; /* 16 original + 16 CS4231A extensions */
uint8_t status;
int trd;
int mce;
int count;
int16_t out_l, out_r;
double cd_vol_l, cd_vol_r;
typedef struct {
int index;
uint8_t regs[32]; /* 16 original + 16 CS4231A extensions */
uint8_t status;
int trd;
int mce;
int count;
int16_t out_l, out_r;
int enable;
double cd_vol_l, cd_vol_r;
int irq, dma;
int freq;
pc_timer_t timer_count;
uint64_t timer_latch;
int enable;
int16_t buffer[SOUNDBUFLEN * 2];
int pos;
int type;
int irq, dma;
int freq;
pc_timer_t timer_count;
uint64_t timer_latch;
int16_t buffer[SOUNDBUFLEN * 2];
int pos;
int type;
} ad1848_t;
void ad1848_setirq(ad1848_t *ad1848, int irq);
void ad1848_setdma(ad1848_t *ad1848, int dma);
uint8_t ad1848_read(uint16_t addr, void *p);
void ad1848_write(uint16_t addr, uint8_t val, void *p);
extern void ad1848_setirq(ad1848_t *ad1848, int irq);
extern void ad1848_setdma(ad1848_t *ad1848, int dma);
void ad1848_update(ad1848_t *ad1848);
void ad1848_speed_changed(ad1848_t *ad1848);
extern uint8_t ad1848_read(uint16_t addr, void *p);
extern void ad1848_write(uint16_t addr, uint8_t val, void *p);
void ad1848_init(ad1848_t *ad1848, int type);
extern void ad1848_update(ad1848_t *ad1848);
extern void ad1848_speed_changed(ad1848_t *ad1848);
extern void ad1848_init(ad1848_t *ad1848, int type);

562
src/sound/snd_ad1848.c
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@@ -1,6 +1,21 @@
/*
AD1848 / CS4248 / CS4231 CODEC emulation (Windows Sound System compatible)*/
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* AD1848 / CS4248 / CS4231 (Windows Sound System) codec emulation.
*
*
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* TheCollector1995, <mariogplayer@gmail.com>
*
* Copyright 2008-2020 Sarah Walker.
* Copyright 2018-2020 TheCollector1995.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
@@ -13,302 +28,317 @@
#include <86box/sound.h>
#include <86box/snd_ad1848.h>
#define CS4231 0x80
#define CS4236 0x03
static int ad1848_vols_6bits[64];
static double ad1848_vols_5bits_aux_gain[32];
static int ad1848_vols_6bits[64];
static double ad1848_vols_5bits_aux_gain[32];
void ad1848_setirq(ad1848_t *ad1848, int irq)
void
ad1848_setirq(ad1848_t *ad1848, int irq)
{
ad1848->irq = irq;
ad1848->irq = irq;
}
void ad1848_setdma(ad1848_t *ad1848, int dma)
void
ad1848_setdma(ad1848_t *ad1848, int dma)
{
ad1848->dma = dma;
ad1848->dma = dma;
}
uint8_t ad1848_read(uint16_t addr, void *p)
uint8_t
ad1848_read(uint16_t addr, void *priv)
{
ad1848_t *ad1848 = (ad1848_t *)p;
uint8_t temp = 0xff;
switch (addr & 3)
{
case 0: /*Index*/
temp = ad1848->index | ad1848->trd | ad1848->mce;
break;
case 1:
temp = ad1848->regs[ad1848->index];
if (ad1848->index == 0x0b) {
temp ^= 0x20;
ad1848->regs[ad1848->index] = temp;
ad1848_t *ad1848 = (ad1848_t *) priv;
uint8_t ret = 0xff;
switch (addr & 3) {
case 0: /*Index*/
ret = ad1848->index | ad1848->trd | ad1848->mce;
break;
case 1:
ret = ad1848->regs[ad1848->index];
if (ad1848->index == 0x0b) {
ret ^= 0x20;
ad1848->regs[ad1848->index] = ret;
}
break;
case 2:
temp = ad1848->status;
break;
}
return temp;
break;
case 2:
ret = ad1848->status;
break;
}
return ret;
}
void ad1848_write(uint16_t addr, uint8_t val, void *p)
void
ad1848_write(uint16_t addr, uint8_t val, void *priv)
{
ad1848_t *ad1848 = (ad1848_t *)p;
double freq;
switch (addr & 3)
{
case 0: /*Index*/
if ((ad1848->regs[12] & 0x40) && (ad1848->type >= AD1848_TYPE_CS4231))
ad1848->index = val & 0x1f; /* cs4231a extended mode enabled */
else
ad1848->index = val & 0x0f; /* ad1848/cs4248 mode TODO: some variants/clones DO NOT mirror, just ignore the writes? */
ad1848->trd = val & 0x20;
ad1848->mce = val & 0x40;
break;
case 1:
switch (ad1848->index)
{
case 8:
freq = (val & 1) ? 16934400LL : 24576000LL;
switch ((val >> 1) & 7)
{
case 0: freq /= 3072; break;
case 1: freq /= 1536; break;
case 2: freq /= 896; break;
case 3: freq /= 768; break;
case 4: freq /= 448; break;
case 5: freq /= 384; break;
case 6: freq /= 512; break;
case 7: freq /= 2560; break;
}
ad1848->freq = freq;
ad1848->timer_latch = (uint64_t)((double)TIMER_USEC * (1000000.0 / (double)ad1848->freq));
break;
case 9:
if (!ad1848->enable && (val & 0x41) == 0x01) {
if (ad1848->timer_latch)
timer_set_delay_u64(&ad1848->timer_count, ad1848->timer_latch);
else
timer_set_delay_u64(&ad1848->timer_count, TIMER_USEC);
}
ad1848->enable = ((val & 0x41) == 0x01);
if (!ad1848->enable) {
timer_disable(&ad1848->timer_count);
ad1848->out_l = ad1848->out_r = 0;
}
break;
case 11:
break;
case 12:
if (ad1848->type != AD1848_TYPE_DEFAULT)
ad1848->regs[12] = ((ad1848->regs[12] & 0x0f) + (val & 0xf0)) | 0x80;
return;
case 14:
ad1848->count = ad1848->regs[15] | (val << 8);
break;
ad1848_t *ad1848 = (ad1848_t *) priv;
double freq;
switch (addr & 3) {
case 0: /* Index */
if ((ad1848->regs[12] & 0x40) && (ad1848->type >= AD1848_TYPE_CS4231))
ad1848->index = val & 0x1f; /* cs4231a extended mode enabled */
else
ad1848->index = val & 0x0f; /* ad1848/cs4248 mode TODO: some variants/clones DO NOT mirror, just ignore the writes? */
ad1848->trd = val & 0x20;
ad1848->mce = val & 0x40;
break;
case 24:
if (! (val & 0x70))
ad1848->status &= 0xfe;
break;
case 25:
case 1:
switch (ad1848->index) {
case 8:
freq = (val & 1) ? 16934400LL : 24576000LL;
switch ((val >> 1) & 7) {
case 0: freq /= 3072; break;
case 1: freq /= 1536; break;
case 2: freq /= 896; break;
case 3: freq /= 768; break;
case 4: freq /= 448; break;
case 5: freq /= 384; break;
case 6: freq /= 512; break;
case 7: freq /= 2560; break;
}
ad1848->freq = freq;
ad1848->timer_latch = (uint64_t)((double)TIMER_USEC * (1000000.0 / (double)ad1848->freq));
break;
case 9:
if (!ad1848->enable && (val & 0x41) == 0x01) {
if (ad1848->timer_latch)
timer_set_delay_u64(&ad1848->timer_count, ad1848->timer_latch);
else
timer_set_delay_u64(&ad1848->timer_count, TIMER_USEC);
}
ad1848->enable = ((val & 0x41) == 0x01);
if (!ad1848->enable) {
timer_disable(&ad1848->timer_count);
ad1848->out_l = ad1848->out_r = 0;
}
break;
}
ad1848->regs[ad1848->index] = val;
if (ad1848->type == AD1848_TYPE_CS4231) { /* TODO: configure CD volume for CS4248/AD1848 too */
if (ad1848->regs[0x12] & 0x80)
ad1848->cd_vol_l = 0;
else
ad1848->cd_vol_l = ad1848_vols_5bits_aux_gain[ad1848->regs[0x12] & 0x1f];
if (ad1848->regs[0x13] & 0x80)
ad1848->cd_vol_r = 0;
else
ad1848->cd_vol_r = ad1848_vols_5bits_aux_gain[ad1848->regs[0x13] & 0x1f];
}
break;
case 2:
ad1848->status &= 0xfe;
break;
}
case 11:
break;
case 12:
if (ad1848->type != AD1848_TYPE_DEFAULT)
ad1848->regs[12] = ((ad1848->regs[12] & 0x0f) + (val & 0xf0)) | 0x80;
return;
case 14:
ad1848->count = ad1848->regs[15] | (val << 8);
break;
case 24:
if (!(val & 0x70))
ad1848->status &= 0xfe;
break;
case 25:
break;
}
ad1848->regs[ad1848->index] = val;
if (ad1848->type == AD1848_TYPE_CS4231) { /* TODO: configure CD volume for CS4248/AD1848 too */
if (ad1848->regs[0x12] & 0x80)
ad1848->cd_vol_l = 0;
else
ad1848->cd_vol_l = ad1848_vols_5bits_aux_gain[ad1848->regs[0x12] & 0x1f];
if (ad1848->regs[0x13] & 0x80)
ad1848->cd_vol_r = 0;
else
ad1848->cd_vol_r = ad1848_vols_5bits_aux_gain[ad1848->regs[0x13] & 0x1f];
}
break;
case 2:
ad1848->status &= 0xfe;
break;
}
}
void ad1848_speed_changed(ad1848_t *ad1848)
void
ad1848_speed_changed(ad1848_t *ad1848)
{
ad1848->timer_latch = (uint64_t)((double)TIMER_USEC * (1000000.0 / (double)ad1848->freq));
ad1848->timer_latch = (uint64_t) ((double) TIMER_USEC * (1000000.0 / (double) ad1848->freq));
}
void ad1848_update(ad1848_t *ad1848)
void
ad1848_update(ad1848_t *ad1848)
{
for (; ad1848->pos < sound_pos_global; ad1848->pos++)
{
ad1848->buffer[ad1848->pos*2] = ad1848->out_l;
ad1848->buffer[ad1848->pos*2 + 1] = ad1848->out_r;
}
for (; ad1848->pos < sound_pos_global; ad1848->pos++) {
ad1848->buffer[ad1848->pos*2] = ad1848->out_l;
ad1848->buffer[ad1848->pos*2 + 1] = ad1848->out_r;
}
}
static void ad1848_poll(void *p)
static void
ad1848_poll(void *priv)
{
ad1848_t *ad1848 = (ad1848_t *)p;
if (ad1848->timer_latch)
timer_advance_u64(&ad1848->timer_count, ad1848->timer_latch);
else
timer_advance_u64(&ad1848->timer_count, TIMER_USEC * 1000);
ad1848_t *ad1848 = (ad1848_t *) priv;
ad1848_update(ad1848);
if (ad1848->enable)
{
int32_t temp;
switch (ad1848->regs[8] & 0x70)
{
case 0x00: /*Mono, 8-bit PCM*/
ad1848->out_l = ad1848->out_r = (dma_channel_read(ad1848->dma) ^ 0x80) * 256;
break;
case 0x10: /*Stereo, 8-bit PCM*/
ad1848->out_l = (dma_channel_read(ad1848->dma) ^ 0x80) * 256;
ad1848->out_r = (dma_channel_read(ad1848->dma) ^ 0x80) * 256;
break;
case 0x40: /*Mono, 16-bit PCM*/
temp = dma_channel_read(ad1848->dma);
ad1848->out_l = ad1848->out_r = (dma_channel_read(ad1848->dma) << 8) | temp;
break;
case 0x50: /*Stereo, 16-bit PCM*/
temp = dma_channel_read(ad1848->dma);
ad1848->out_l = (dma_channel_read(ad1848->dma) << 8) | temp;
temp = dma_channel_read(ad1848->dma);
ad1848->out_r = (dma_channel_read(ad1848->dma) << 8) | temp;
break;
}
if (ad1848->timer_latch)
timer_advance_u64(&ad1848->timer_count, ad1848->timer_latch);
else
timer_advance_u64(&ad1848->timer_count, TIMER_USEC * 1000);
if (ad1848->regs[6] & 0x80)
ad1848->out_l = 0;
else
ad1848->out_l = (ad1848->out_l * ad1848_vols_6bits[ad1848->regs[6] & 0x3f]) >> 16;
ad1848_update(ad1848);
if (ad1848->regs[7] & 0x80)
ad1848->out_r = 0;
else
ad1848->out_r = (ad1848->out_r * ad1848_vols_6bits[ad1848->regs[7] & 0x3f]) >> 16;
if (ad1848->count < 0)
{
ad1848->count = ad1848->regs[15] | (ad1848->regs[14] << 8);
if (!(ad1848->status & 0x01))
{
ad1848->status |= 0x01;
if (ad1848->regs[10] & 2)
picint(1 << ad1848->irq);
}
}
ad1848->count--;
}
else
{
ad1848->out_l = ad1848->out_r = 0;
ad1848->cd_vol_l = ad1848->cd_vol_r = 0;
}
}
static void ad1848_filter_cd_audio(int channel, double *buffer, void *p)
{
ad1848_t *ad1848 = (ad1848_t *)p;
double c;
double volume = channel ? ad1848->cd_vol_r : ad1848->cd_vol_l;
c = ((*buffer) * volume) / 65536.0;
*buffer = c;
}
void ad1848_init(ad1848_t *ad1848, int type)
{
int c;
double attenuation;
ad1848->status = 0xcc;
ad1848->index = ad1848->trd = 0;
ad1848->mce = 0x40;
ad1848->regs[0] = ad1848->regs[1] = 0;
ad1848->regs[2] = ad1848->regs[3] = 0x80; /* Line-in */
ad1848->regs[4] = ad1848->regs[5] = 0x80;
ad1848->regs[6] = ad1848->regs[7] = 0x80; /* Left/right Output */
ad1848->regs[8] = 0;
ad1848->regs[9] = 0x08;
ad1848->regs[10] = ad1848->regs[11] = 0;
if ((type == AD1848_TYPE_CS4248) || (type == AD1848_TYPE_CS4231) || (type == AD1848_TYPE_CS4236))
ad1848->regs[12] = 0x8a;
else
ad1848->regs[12] = 0xa;
ad1848->regs[13] = 0;
ad1848->regs[14] = ad1848->regs[15] = 0;
if (type == AD1848_TYPE_CS4231) {
ad1848->regs[16] = ad1848->regs[17] = 0;
ad1848->regs[18] = ad1848->regs[19] = 0x88;
ad1848->regs[22] = 0x80;
ad1848->regs[24] = 0;
ad1848->regs[25] = CS4231;
ad1848->regs[26] = 0x80;
ad1848->regs[29] = 0x80;
} else if (type == AD1848_TYPE_CS4236) {
ad1848->regs[16] = ad1848->regs[17] = 0;
ad1848->regs[18] = ad1848->regs[19] = 0;
ad1848->regs[20] = ad1848->regs[21] = 0;
ad1848->regs[22] = ad1848->regs[23] = 0;
ad1848->regs[24] = 0;
ad1848->regs[25] = CS4236;
ad1848->regs[26] = 0xa0;
ad1848->regs[27] = ad1848->regs[29] = 0;
ad1848->regs[30] = ad1848->regs[31] = 0;
}
if (ad1848->enable) {
int32_t temp;
ad1848->out_l = 0;
ad1848->out_r = 0;
for (c = 0; c < 64; c++) {
attenuation = 0.0;
if (c & 0x01) attenuation -= 1.5;
if (c & 0x02) attenuation -= 3.0;
if (c & 0x04) attenuation -= 6.0;
if (c & 0x08) attenuation -= 12.0;
if (c & 0x10) attenuation -= 24.0;
if (c & 0x20) attenuation -= 48.0;
attenuation = pow(10, attenuation / 10);
ad1848_vols_6bits[c] = (int)(attenuation * 65536);
}
for (c = 0; c < 32; c++) {
attenuation = 12.0;
if (c & 0x01) attenuation -= 1.5;
if (c & 0x02) attenuation -= 3.0;
if (c & 0x04) attenuation -= 6.0;
if (c & 0x08) attenuation -= 12.0;
if (c & 0x10) attenuation -= 24.0;
attenuation = pow(10, attenuation / 10);
ad1848_vols_5bits_aux_gain[c] = (attenuation * 65536);
}
switch (ad1848->regs[8] & 0x70) {
case 0x00: /*Mono, 8-bit PCM*/
ad1848->out_l = ad1848->out_r = (dma_channel_read(ad1848->dma) ^ 0x80) * 256;
break;
case 0x10: /*Stereo, 8-bit PCM*/
ad1848->out_l = (dma_channel_read(ad1848->dma) ^ 0x80) * 256;
ad1848->out_r = (dma_channel_read(ad1848->dma) ^ 0x80) * 256;
break;
ad1848->type = type;
timer_add(&ad1848->timer_count, ad1848_poll, ad1848, 0);
case 0x40: /*Mono, 16-bit PCM*/
temp = dma_channel_read(ad1848->dma);
ad1848->out_l = ad1848->out_r = (dma_channel_read(ad1848->dma) << 8) | temp;
break;
case 0x50: /*Stereo, 16-bit PCM*/
temp = dma_channel_read(ad1848->dma);
ad1848->out_l = (dma_channel_read(ad1848->dma) << 8) | temp;
temp = dma_channel_read(ad1848->dma);
ad1848->out_r = (dma_channel_read(ad1848->dma) << 8) | temp;
break;
}
if (ad1848->type != AD1848_TYPE_DEFAULT && ad1848->type != AD1848_TYPE_CS4248)
sound_set_cd_audio_filter(ad1848_filter_cd_audio, ad1848);
if (ad1848->regs[6] & 0x80)
ad1848->out_l = 0;
else
ad1848->out_l = (ad1848->out_l * ad1848_vols_6bits[ad1848->regs[6] & 0x3f]) >> 16;
if (ad1848->regs[7] & 0x80)
ad1848->out_r = 0;
else
ad1848->out_r = (ad1848->out_r * ad1848_vols_6bits[ad1848->regs[7] & 0x3f]) >> 16;
if (ad1848->count < 0)
{
ad1848->count = ad1848->regs[15] | (ad1848->regs[14] << 8);
if (!(ad1848->status & 0x01))
{
ad1848->status |= 0x01;
if (ad1848->regs[10] & 2)
picint(1 << ad1848->irq);
}
}
ad1848->count--;
} else {
ad1848->out_l = ad1848->out_r = 0;
ad1848->cd_vol_l = ad1848->cd_vol_r = 0;
}
}
static void
ad1848_filter_cd_audio(int channel, double *buffer, void *priv)
{
ad1848_t *ad1848 = (ad1848_t *) priv;
double c;
double volume = channel ? ad1848->cd_vol_r : ad1848->cd_vol_l;
c = ((*buffer) * volume) / 65536.0;
*buffer = c;
}
void
ad1848_init(ad1848_t *ad1848, int type)
{
int c;
double attenuation;
ad1848->status = 0xcc;
ad1848->index = ad1848->trd = 0;
ad1848->mce = 0x40;
ad1848->regs[0] = ad1848->regs[1] = 0;
ad1848->regs[2] = ad1848->regs[3] = 0x80; /* Line-in */
ad1848->regs[4] = ad1848->regs[5] = 0x80;
ad1848->regs[6] = ad1848->regs[7] = 0x80; /* Left/right Output */
ad1848->regs[8] = 0;
ad1848->regs[9] = 0x08;
ad1848->regs[10] = ad1848->regs[11] = 0;
if ((type == AD1848_TYPE_CS4248) || (type == AD1848_TYPE_CS4231) || (type == AD1848_TYPE_CS4236))
ad1848->regs[12] = 0x8a;
else
ad1848->regs[12] = 0xa;
ad1848->regs[13] = 0;
ad1848->regs[14] = ad1848->regs[15] = 0;
if (type == AD1848_TYPE_CS4231) {
ad1848->regs[16] = ad1848->regs[17] = 0;
ad1848->regs[18] = ad1848->regs[19] = 0x88;
ad1848->regs[22] = 0x80;
ad1848->regs[24] = 0;
ad1848->regs[25] = CS4231;
ad1848->regs[26] = 0x80;
ad1848->regs[29] = 0x80;
} else if (type == AD1848_TYPE_CS4236) {
ad1848->regs[16] = ad1848->regs[17] = 0;
ad1848->regs[18] = ad1848->regs[19] = 0;
ad1848->regs[20] = ad1848->regs[21] = 0;
ad1848->regs[22] = ad1848->regs[23] = 0;
ad1848->regs[24] = 0;
ad1848->regs[25] = CS4236;
ad1848->regs[26] = 0xa0;
ad1848->regs[27] = ad1848->regs[29] = 0;
ad1848->regs[30] = ad1848->regs[31] = 0;
}
ad1848->out_l = 0;
ad1848->out_r = 0;
for (c = 0; c < 64; c++) {
attenuation = 0.0;
if (c & 0x01) attenuation -= 1.5;
if (c & 0x02) attenuation -= 3.0;
if (c & 0x04) attenuation -= 6.0;
if (c & 0x08) attenuation -= 12.0;
if (c & 0x10) attenuation -= 24.0;
if (c & 0x20) attenuation -= 48.0;
attenuation = pow(10, attenuation / 10);
ad1848_vols_6bits[c] = (int)(attenuation * 65536);
}
for (c = 0; c < 32; c++) {
attenuation = 12.0;
if (c & 0x01) attenuation -= 1.5;
if (c & 0x02) attenuation -= 3.0;
if (c & 0x04) attenuation -= 6.0;
if (c & 0x08) attenuation -= 12.0;
if (c & 0x10) attenuation -= 24.0;
attenuation = pow(10, attenuation / 10);
ad1848_vols_5bits_aux_gain[c] = (attenuation * 65536);
}
ad1848->type = type;
timer_add(&ad1848->timer_count, ad1848_poll, ad1848, 0);
if (ad1848->type != AD1848_TYPE_DEFAULT && ad1848->type != AD1848_TYPE_CS4248)
sound_set_cd_audio_filter(ad1848_filter_cd_audio, ad1848);
}

332
src/sound/snd_wss.c
View File

@@ -34,217 +34,231 @@
#include <86box/snd_opl.h>
/*530, 11, 3 - 530=23*/
/*530, 11, 1 - 530=22*/
/*530, 11, 0 - 530=21*/
/*530, 10, 1 - 530=1a*/
/*530, 9, 1 - 530=12*/
/*530, 7, 1 - 530=0a*/
/*604, 11, 1 - 530=22*/
/*e80, 11, 1 - 530=22*/
/*f40, 11, 1 - 530=22*/
/* 530, 11, 3 - 530=23
* 530, 11, 1 - 530=22
* 530, 11, 0 - 530=21
* 530, 10, 1 - 530=1a
* 530, 9, 1 - 530=12
* 530, 7, 1 - 530=0a
* 604, 11, 1 - 530=22
* e80, 11, 1 - 530=22
* f40, 11, 1 - 530=22
*/
static int wss_dma[4] = {0, 0, 1, 3};
static int wss_irq[8] = {5, 7, 9, 10, 11, 12, 14, 15}; /*W95 only uses 7-9, others may be wrong*/
static const int wss_dma[4] = {0, 0, 1, 3};
static const int wss_irq[8] = {5, 7, 9, 10, 11, 12, 14, 15}; /* W95 only uses 7-9, others may be wrong */
typedef struct wss_t
{
uint8_t config;
ad1848_t ad1848;
opl_t opl;
typedef struct wss_t {
uint8_t config;
int opl_enabled;
uint8_t pos_regs[8];
ad1848_t ad1848;
opl_t opl;
int opl_enabled;
uint8_t pos_regs[8];
} wss_t;
uint8_t wss_read(uint16_t addr, void *p)
{
wss_t *wss = (wss_t *)p;
uint8_t temp;
temp = 4 | (wss->config & 0x40);
return temp;
uint8_t
wss_read(uint16_t addr, void *priv) {
wss_t *wss = (wss_t *) priv;
return 4 | (wss->config & 0x40);
}
void wss_write(uint16_t addr, uint8_t val, void *p)
{
wss_t *wss = (wss_t *)p;
wss->config = val;
ad1848_setdma(&wss->ad1848, wss_dma[val & 3]);
ad1848_setirq(&wss->ad1848, wss_irq[(val >> 3) & 7]);
void
wss_write(uint16_t addr, uint8_t val, void *priv)
{
wss_t *wss = (wss_t *) priv;
wss->config = val;
ad1848_setdma(&wss->ad1848, wss_dma[val & 3]);
ad1848_setirq(&wss->ad1848, wss_irq[(val >> 3) & 7]);
}
static void wss_get_buffer(int32_t *buffer, int len, void *p)
static void
wss_get_buffer(int32_t *buffer, int len, void *priv)
{
wss_t *wss = (wss_t *)p;
int c;
wss_t *wss = (wss_t *) priv;
int c;
opl3_update(&wss->opl);
ad1848_update(&wss->ad1848);
for (c = 0; c < len * 2; c++) {
buffer[c] += wss->opl.buffer[c];
buffer[c] += (wss->ad1848.buffer[c] / 2);
}
opl3_update(&wss->opl);
ad1848_update(&wss->ad1848);
for (c = 0; c < len * 2; c++) {
buffer[c] += wss->opl.buffer[c];
buffer[c] += (wss->ad1848.buffer[c] / 2);
}
wss->opl.pos = 0;
wss->ad1848.pos = 0;
wss->opl.pos = 0;
wss->ad1848.pos = 0;
}
void *wss_init(const device_t *info)
void *
wss_init(const device_t *info)
{
wss_t *wss = malloc(sizeof(wss_t));
memset(wss, 0, sizeof(wss_t));
wss_t *wss = malloc(sizeof(wss_t));
memset(wss, 0, sizeof(wss_t));
uint16_t addr = device_get_config_hex16("base");
wss->opl_enabled = device_get_config_int("opl");
uint16_t addr = device_get_config_hex16("base");
wss->opl_enabled = device_get_config_int("opl");
if (wss->opl_enabled)
opl3_init(&wss->opl);
ad1848_init(&wss->ad1848, AD1848_TYPE_DEFAULT);
if (wss->opl_enabled)
opl3_init(&wss->opl);
ad1848_setirq(&wss->ad1848, 7);
ad1848_setdma(&wss->ad1848, 3);
ad1848_init(&wss->ad1848, AD1848_TYPE_DEFAULT);
if (wss->opl_enabled)
ad1848_setirq(&wss->ad1848, 7);
ad1848_setdma(&wss->ad1848, 3);
if (wss->opl_enabled)
io_sethandler(0x0388, 0x0004, opl3_read, NULL, NULL, opl3_write, NULL, NULL, &wss->opl);
io_sethandler(addr, 0x0004, wss_read, NULL, NULL, wss_write, NULL, NULL, wss);
io_sethandler(addr+4, 0x0004, ad1848_read, NULL, NULL, ad1848_write, NULL, NULL, &wss->ad1848);
sound_add_handler(wss_get_buffer, wss);
return wss;
}
static uint8_t
ncr_audio_mca_read(int port, void *priv)
{
wss_t *wss = (wss_t *) priv;
return wss->pos_regs[port & 7];
}
static void
ncr_audio_mca_write(int port, uint8_t val, void *priv)
{
wss_t *wss = (wss_t *) priv;
uint16_t ports[4] = {0x530, 0xE80, 0xF40, 0x604};
uint16_t addr;
if (port < 0x102)
return;
wss->opl_enabled = (wss->pos_regs[2] & 0x20) ? 1 : 0;
addr = ports[(wss->pos_regs[2] & 0x18) >> 3];
io_removehandler(0x0388, 0x0004, opl3_read, NULL, NULL, opl3_write, NULL, NULL, &wss->opl);
io_removehandler(addr, 0x0004, wss_read, NULL, NULL, wss_write, NULL, NULL, wss);
io_removehandler(addr+4, 0x0004, ad1848_read, NULL, NULL, ad1848_write, NULL, NULL, &wss->ad1848);
wss->pos_regs[port & 7] = val;
if (wss->pos_regs[2] & 1) {
addr = ports[(wss->pos_regs[2] & 0x18) >> 3];
if (wss->opl_enabled)
io_sethandler(0x0388, 0x0004, opl3_read, NULL, NULL, opl3_write, NULL, NULL, &wss->opl);
io_sethandler(addr, 0x0004, wss_read, NULL, NULL, wss_write, NULL, NULL, wss);
io_sethandler(addr+4, 0x0004, ad1848_read, NULL, NULL, ad1848_write, NULL, NULL, &wss->ad1848);
sound_add_handler(wss_get_buffer, wss);
return wss;
}
}
static uint8_t ncr_audio_mca_read(int port, void *p)
static uint8_t
ncr_audio_mca_feedb(void *priv)
{
wss_t *wss = (wss_t *)p;
return wss->pos_regs[port & 7];
wss_t *wss = (wss_t *) priv;
return (wss->pos_regs[2] & 1);
}
static void ncr_audio_mca_write(int port, uint8_t val, void *p)
void *
ncr_audio_init(const device_t *info)
{
wss_t *wss = (wss_t *)p;
uint16_t ports[4] = {0x530, 0xE80, 0xF40, 0x604};
uint16_t addr;
wss_t *wss = malloc(sizeof(wss_t));
memset(wss, 0, sizeof(wss_t));
if (port < 0x102)
return;
opl3_init(&wss->opl);
ad1848_init(&wss->ad1848, AD1848_TYPE_DEFAULT);
wss->opl_enabled = (wss->pos_regs[2] & 0x20) ? 1 : 0;
addr = ports[(wss->pos_regs[2] & 0x18) >> 3];
io_removehandler(0x0388, 0x0004, opl3_read, NULL, NULL, opl3_write, NULL, NULL, &wss->opl);
io_removehandler(addr, 0x0004, wss_read, NULL, NULL, wss_write, NULL, NULL, wss);
io_removehandler(addr+4, 0x0004, ad1848_read, NULL, NULL, ad1848_write, NULL, NULL, &wss->ad1848);
ad1848_setirq(&wss->ad1848, 7);
ad1848_setdma(&wss->ad1848, 3);
wss->pos_regs[port & 7] = val;
mca_add(ncr_audio_mca_read, ncr_audio_mca_write, ncr_audio_mca_feedb, NULL, wss);
wss->pos_regs[0] = 0x16;
wss->pos_regs[1] = 0x51;
if (wss->pos_regs[2] & 1) {
addr = ports[(wss->pos_regs[2] & 0x18) >> 3];
sound_add_handler(wss_get_buffer, wss);
if (wss->opl_enabled)
io_sethandler(0x0388, 0x0004, opl3_read, NULL, NULL, opl3_write, NULL, NULL, &wss->opl);
io_sethandler(addr, 0x0004, wss_read, NULL, NULL, wss_write, NULL, NULL, wss);
io_sethandler(addr+4, 0x0004, ad1848_read, NULL, NULL, ad1848_write, NULL, NULL, &wss->ad1848);
}
return wss;
}
static uint8_t ncr_audio_mca_feedb(void *p)
{
wss_t *wss = (wss_t *)p;
return (wss->pos_regs[2] & 1);
void
wss_close(void *priv)
{
wss_t *wss = (wss_t *) priv;
free(wss);
}
void *ncr_audio_init(const device_t *info)
void
wss_speed_changed(void *priv)
{
wss_t *wss = malloc(sizeof(wss_t));
memset(wss, 0, sizeof(wss_t));
opl3_init(&wss->opl);
ad1848_init(&wss->ad1848, AD1848_TYPE_DEFAULT);
ad1848_setirq(&wss->ad1848, 7);
ad1848_setdma(&wss->ad1848, 3);
mca_add(ncr_audio_mca_read, ncr_audio_mca_write, ncr_audio_mca_feedb, NULL, wss);
wss->pos_regs[0] = 0x16;
wss->pos_regs[1] = 0x51;
sound_add_handler(wss_get_buffer, wss);
return wss;
wss_t *wss = (wss_t *) priv;
ad1848_speed_changed(&wss->ad1848);
}
void wss_close(void *p)
{
wss_t *wss = (wss_t *)p;
free(wss);
}
void wss_speed_changed(void *p)
{
wss_t *wss = (wss_t *)p;
ad1848_speed_changed(&wss->ad1848);
}
static const device_config_t wss_config[] =
{
{
"base", "Address", CONFIG_HEX16, "", 0x530, "", { 0 },
{
{
"0x530", 0x530
},
{
"0x604", 0x604
},
{
"0xe80", 0xe80
},
{
"0xf40", 0xf40
},
{
""
}
}
},
static const device_config_t wss_config[] = {
{
"base", "Address", CONFIG_HEX16, "", 0x530, "", { 0 },
{
"opl", "Enable OPL", CONFIG_BINARY, "", 1
},
{
"", "", -1
}
{
"0x530", 0x530
},
{
"0x604", 0x604
},
{
"0xe80", 0xe80
},
{
"0xf40", 0xf40
},
{
""
}
}
},
{
"opl", "Enable OPL", CONFIG_BINARY, "", 1
},
{
"", "", -1
}
};
const device_t wss_device =
{
"Windows Sound System",
DEVICE_ISA | DEVICE_AT, 0,
wss_init, wss_close, NULL,
{ NULL },
wss_speed_changed,
NULL,
wss_config
"Windows Sound System",
DEVICE_ISA | DEVICE_AT, 0,
wss_init, wss_close, NULL,
{ NULL },
wss_speed_changed,
NULL,
wss_config
};
const device_t ncr_business_audio_device =
{
"NCR Business Audio",
DEVICE_MCA, 0,
ncr_audio_init, wss_close, NULL,
{ NULL },
wss_speed_changed,
NULL,
NULL
"NCR Business Audio",
DEVICE_MCA, 0,
ncr_audio_init, wss_close, NULL,
{ NULL },
wss_speed_changed,
NULL,
NULL
};