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sb16 fixes (WfW 3 appears to work with shipped drivers) (malc)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2039 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2006-07-04 16:49:00 +00:00
parent 6c270db741
commit feea13e186
1 changed files with 60 additions and 24 deletions
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84
hw/sb16.c
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@ -193,6 +193,31 @@ static void aux_timer (void *opaque)
#define DMA8_AUTO 1
#define DMA8_HIGH 2
static void continue_dma8 (SB16State *s)
{
if (s->freq > 0) {
audsettings_t as;
s->audio_free = 0;
as.freq = s->freq;
as.nchannels = 1 << s->fmt_stereo;
as.fmt = s->fmt;
s->voice = AUD_open_out (
&s->card,
s->voice,
"sb16",
s,
SB_audio_callback,
&as,
0 /* little endian */
);
}
control (s, 1);
}
static void dma_cmd8 (SB16State *s, int mask, int dma_len)
{
s->fmt = AUD_FMT_U8;
@ -201,7 +226,8 @@ static void dma_cmd8 (SB16State *s, int mask, int dma_len)
s->fmt_signed = 0;
s->fmt_stereo = (s->mixer_regs[0x0e] & 2) != 0;
if (-1 == s->time_const) {
s->freq = 11025;
if (s->freq <= 0)
s->freq = 11025;
}
else {
int tmp = (256 - s->time_const);
@ -239,27 +265,7 @@ static void dma_cmd8 (SB16State *s, int mask, int dma_len)
s->freq, s->fmt_stereo, s->fmt_signed, s->fmt_bits,
s->block_size, s->dma_auto, s->fifo, s->highspeed);
if (s->freq) {
audsettings_t as;
s->audio_free = 0;
as.freq = s->freq;
as.nchannels = 1 << s->fmt_stereo;
as.fmt = s->fmt;
s->voice = AUD_open_out (
&s->card,
s->voice,
"sb16",
s,
SB_audio_callback,
&as,
0 /* little endian */
);
}
control (s, 1);
continue_dma8 (s);
speaker (s, 1);
}
@ -437,7 +443,7 @@ static void command (SB16State *s, uint8_t cmd)
break;
case 0x1c: /* Auto-Initialize DMA DAC, 8-bit */
control (s, 1);
dma_cmd8 (s, DMA8_AUTO, -1);
break;
case 0x20: /* Direct ADC, Juice/PL */
@ -531,7 +537,9 @@ static void command (SB16State *s, uint8_t cmd)
break;
case 0xd4: /* continue DMA operation. 8bit */
control (s, 1);
/* KQ6 (or maybe Sierras audblst.drv in general) resets
the frequency between halt/continue */
continue_dma8 (s);
break;
case 0xd5: /* halt DMA operation. 16bit */
@ -818,6 +826,33 @@ static void complete (SB16State *s)
return;
}
static void legacy_reset (SB16State *s)
{
audsettings_t as;
s->freq = 11025;
s->fmt_signed = 0;
s->fmt_bits = 8;
s->fmt_stereo = 0;
as.freq = s->freq;
as.nchannels = 1;
as.fmt = AUD_FMT_U8;
s->voice = AUD_open_out (
&s->card,
s->voice,
"sb16",
s,
SB_audio_callback,
&as,
0 /* little endian */
);
/* Not sure about that... */
/* AUD_set_active_out (s->voice, 1); */
}
static void reset (SB16State *s)
{
pic_set_irq (s->irq, 0);
@ -841,6 +876,7 @@ static void reset (SB16State *s)
dsp_out_data(s, 0xaa);
speaker (s, 0);
control (s, 0);
legacy_reset (s);
}
static IO_WRITE_PROTO (dsp_write)