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Diffstat (limited to 'hw/sb16.c')
-rw-r--r--hw/sb16.c365
1 files changed, 305 insertions, 60 deletions
diff --git a/hw/sb16.c b/hw/sb16.c
index 260718cdc0..f84cf8d4a2 100644
--- a/hw/sb16.c
+++ b/hw/sb16.c
@@ -26,12 +26,10 @@
#define MIN(a, b) ((a)>(b)?(b):(a))
#define LENOFA(a) ((int) (sizeof(a)/sizeof(a[0])))
-#define log(...) do { \
- fprintf (stderr, "sb16: " __VA_ARGS__); \
- fputc ('\n', stderr); \
-} while (0)
+#define dolog(...) fprintf (stderr, "sb16: " __VA_ARGS__);
/* #define DEBUG_SB16 */
+
#ifdef DEBUG_SB16
#define lwarn(...) fprintf (stderr, "sb16: " __VA_ARGS__)
#define linfo(...) fprintf (stderr, "sb16: " __VA_ARGS__)
@@ -47,7 +45,10 @@
#define IO_WRITE_PROTO(name) \
void name (void *opaque, uint32_t nport, uint32_t val)
-static const char e3[] = "COPYRIGHT (C) CREATIVE TECHNOLOGY LTD, 1992.";
+static const char e3[] =
+ "COPYRIGHT (C) CREATIVE TECHNOLOGY LTD, 1992\0"
+ "COPYRIGHT (C) CREATIVE TECHNOLOGY LTD, 1994-1997";
+ /* "COPYRIGHT (C) CREATIVE TECHNOLOGY LTD, 1994."; */
static struct {
int ver_lo;
@@ -80,10 +81,13 @@ typedef struct SB16State {
int v2x6;
- uint8_t in_data[10];
- uint8_t out_data[50];
+ uint8_t in2_data[10];
+ uint8_t out_data[1024];
int left_till_irq;
+ uint64_t nzero;
+ uint8_t last_read_byte;
+ uint8_t test_reg;
/* mixer state */
int mixer_nreg;
@@ -95,7 +99,7 @@ static struct SB16State dsp;
static void log_dsp (SB16State *dsp)
{
- linfo ("%c:%c:%d:%c:dmabuf=%d:pos=%d:freq=%d:timeconst=%d:speaker=%d\n",
+ ldebug ("%c:%c:%d:%c:dmabuf=%d:pos=%d:freq=%d:timeconst=%d:speaker=%d\n",
dsp->fmt_stereo ? 'S' : 'M',
dsp->fmt_signed ? 'S' : 'U',
dsp->fmt_bits,
@@ -191,6 +195,7 @@ static void dma_cmd (uint8_t cmd, uint8_t d0, int dma_len)
mix_block = ((dsp.freq * align) / 100) & ~(align - 1);
}
+ if (dsp.freq)
AUD_reset (dsp.freq, 1 << dsp.fmt_stereo, fmt);
control (1);
dsp.speaker = 1;
@@ -202,9 +207,17 @@ static inline void dsp_out_data(SB16State *dsp, int val)
dsp->out_data[dsp->out_data_len++] = val;
}
+static inline uint8_t dsp_get_data(SB16State *dsp)
+{
+ if (dsp->in_index)
+ return dsp->in2_data[--dsp->in_index];
+ else
+ return 0;
+}
+
static void command (SB16State *dsp, uint8_t cmd)
{
- linfo ("%#x\n", cmd);
+ linfo ("command: %#x\n", cmd);
if (cmd > 0xaf && cmd < 0xd0) {
if (cmd & 8)
@@ -215,7 +228,7 @@ static void command (SB16State *dsp, uint8_t cmd)
case 12:
break;
default:
- log("%#x wrong bits", cmd);
+ dolog ("command: %#x wrong bits specification\n", cmd);
goto error;
}
dsp->needed_bytes = 3;
@@ -223,23 +236,25 @@ static void command (SB16State *dsp, uint8_t cmd)
else {
switch (cmd) {
case 0x00:
- case 0x03:
case 0xe7:
/* IMS uses those when probing for sound devices */
return;
+ case 0x03:
case 0x04:
- dsp->needed_bytes = 1;
- break;
+ dsp_out_data (dsp, 0);
+ return;
case 0x05:
+ dsp->needed_bytes = 2;
+ break;
+
case 0x0e:
dsp->needed_bytes = 2;
break;
case 0x0f:
dsp->needed_bytes = 1;
- dsp_out_data (dsp, 0);
break;
case 0x10:
@@ -272,6 +287,8 @@ static void command (SB16State *dsp, uint8_t cmd)
dsp->needed_bytes = 2;
break;
+ case 0x45:
+ dsp_out_data (dsp, 0xaa);
case 0x47: /* Continue Auto-Initialize DMA 16bit */
break;
@@ -346,19 +363,39 @@ static void command (SB16State *dsp, uint8_t cmd)
case 0xe3:
{
int i;
- for (i = sizeof (e3) - 1; i >= 0; --i)
+ for (i = sizeof (e3) - 1; i >= 0; i--)
dsp_out_data (dsp, e3[i]);
return;
}
+ case 0xe4: /* write test reg */
+ dsp->needed_bytes = 1;
+ break;
+
+ case 0xe8: /* read test reg */
+ dsp_out_data (dsp, dsp->test_reg);
+ break;
+
case 0xf2:
- dsp_out_data(dsp, 0xaa);
+ dsp_out_data (dsp, 0xaa);
dsp->mixer_regs[0x82] |= dsp->mixer_regs[0x80];
pic_set_irq (sb.irq, 1);
return;
+ case 0xf9:
+ dsp->needed_bytes = 1;
+ break;
+
+ case 0xfa:
+ dsp_out_data (dsp, 0);
+ break;
+
+ case 0xfc: /* FIXME */
+ dsp_out_data (dsp, 0);
+ break;
+
default:
- log("%#x is unknown", cmd);
+ dolog ("unrecognized command %#x\n", cmd);
goto error;
}
}
@@ -371,15 +408,14 @@ static void command (SB16State *dsp, uint8_t cmd)
static void complete (SB16State *dsp)
{
+ int d0, d1, d2;
linfo ("complete command %#x, in_index %d, needed_bytes %d\n",
dsp->cmd, dsp->in_index, dsp->needed_bytes);
if (dsp->cmd > 0xaf && dsp->cmd < 0xd0) {
- int d0, d1, d2;
-
- d0 = dsp->in_data[0];
- d1 = dsp->in_data[1];
- d2 = dsp->in_data[2];
+ d2 = dsp_get_data (dsp);
+ d1 = dsp_get_data (dsp);
+ d0 = dsp_get_data (dsp);
ldebug ("d0 = %d, d1 = %d, d2 = %d\n",
d0, d1, d2);
@@ -387,23 +423,29 @@ static void complete (SB16State *dsp)
}
else {
switch (dsp->cmd) {
- case 0x05:
case 0x04:
- case 0x0e:
+ case 0x10:
+ dsp_get_data (dsp);
+ break;
+
case 0x0f:
+ d0 = dsp_get_data (dsp);
+ dsp_out_data (dsp, 0xf8);
break;
- case 0x10:
+ case 0x05:
+ case 0x0e:
+ dsp_get_data (dsp);
+ dsp_get_data (dsp);
break;
case 0x14:
{
- int d0, d1;
int save_left;
int save_pos;
- d0 = dsp->in_data[0];
- d1 = dsp->in_data[1];
+ d1 = dsp_get_data (dsp);
+ d0 = dsp_get_data (dsp);
save_left = dsp->left_till_irq;
save_pos = dsp->dma_pos;
@@ -417,35 +459,60 @@ static void complete (SB16State *dsp)
}
case 0x40:
- dsp->time_const = dsp->in_data[0];
+ dsp->time_const = dsp_get_data (dsp);
linfo ("set time const %d\n", dsp->time_const);
break;
case 0x41:
case 0x42:
- dsp->freq = dsp->in_data[1] + (dsp->in_data[0] << 8);
- linfo ("set freq %#x, %#x = %d\n",
- dsp->in_data[1], dsp->in_data[0], dsp->freq);
+ d1 = dsp_get_data (dsp);
+ d0 = dsp_get_data (dsp);
+
+ dsp->freq = d1 + (d0 << 8);
+ linfo ("set freq %#x, %#x = %d\n", d1, d0, dsp->freq);
break;
case 0x48:
- dsp->dma_buffer_size = dsp->in_data[1] + (dsp->in_data[0] << 8);
+ d1 = dsp_get_data (dsp);
+ d0 = dsp_get_data (dsp);
+ dsp->dma_buffer_size = d1 + (d0 << 8);
linfo ("set dma len %#x, %#x = %d\n",
- dsp->in_data[1], dsp->in_data[0], dsp->dma_buffer_size);
+ d1, d0, dsp->dma_buffer_size);
break;
case 0xe0:
+ d0 = dsp_get_data (dsp);
dsp->out_data_len = 0;
- linfo ("data = %#x\n", dsp->in_data[0]);
- dsp_out_data(dsp, dsp->in_data[0] ^ 0xff);
+ linfo ("data = %#x\n", d0);
+ dsp_out_data (dsp, d0 ^ 0xff);
+ break;
+
+ case 0xe4:
+ dsp->test_reg = dsp_get_data (dsp);
+ break;
+
+
+ case 0xf9:
+ d0 = dsp_get_data (dsp);
+ ldebug ("f9 <- %#x\n", d0);
+ switch (d0) {
+ case 0x0e: dsp_out_data (dsp, 0xff); break;
+ case 0x0f: dsp_out_data (dsp, 0x07); break;
+ case 0xf9: dsp_out_data (dsp, 0x00); break;
+ case 0x37:
+ dsp_out_data (dsp, 0x38); break;
+ default:
+ dsp_out_data (dsp, 0);
+ }
break;
default:
- log ("unrecognized command %#x", dsp->cmd);
+ dolog ("complete: unrecognized command %#x\n", dsp->cmd);
return;
}
}
+ dsp->needed_bytes = 0;
dsp->cmd = -1;
return;
}
@@ -457,7 +524,7 @@ static IO_WRITE_PROTO (dsp_write)
iport = nport - sb.port;
- ldebug ("write %#x %#x\n", nport, iport);
+ ldebug ("dsp_write %#x <- %#x\n", nport, val);
switch (iport) {
case 0x6:
control (0);
@@ -465,6 +532,14 @@ static IO_WRITE_PROTO (dsp_write)
dsp->v2x6 = 0;
else if ((1 == val) && (0 == dsp->v2x6)) {
dsp->v2x6 = 1;
+ dsp->dma_pos = 0;
+ dsp->dma_auto = 0;
+ dsp->in_index = 0;
+ dsp->out_data_len = 0;
+ dsp->left_till_irq = 0;
+ dsp->speaker = 0;
+ dsp->needed_bytes = 0;
+ pic_set_irq (sb.irq, 0);
dsp_out_data(dsp, 0xaa);
}
else
@@ -479,18 +554,22 @@ static IO_WRITE_PROTO (dsp_write)
}
}
else {
- dsp->in_data[dsp->in_index++] = val;
+ if (dsp->in_index == sizeof (dsp->in2_data)) {
+ dolog ("in data overrun\n");
+ }
+ else {
+ dsp->in2_data[dsp->in_index++] = val;
if (dsp->in_index == dsp->needed_bytes) {
dsp->needed_bytes = 0;
- dsp->in_index = 0;
complete (dsp);
log_dsp (dsp);
}
}
+ }
break;
default:
- log ("(nport=%#x, val=%#x)", nport, val);
+ dolog ("dsp_write (nport=%#x, val=%#x)\n", nport, val);
break;
}
}
@@ -503,31 +582,36 @@ static IO_READ_PROTO (dsp_read)
iport = nport - sb.port;
switch (iport) {
-
case 0x6: /* reset */
- return 0;
+ control (0);
+ retval = 0;
+ dsp->speaker = 0;
+ break;
case 0xa: /* read data */
if (dsp->out_data_len) {
retval = dsp->out_data[--dsp->out_data_len];
+ dsp->last_read_byte = retval;
} else {
- log("empty output buffer");
- goto error;
+ retval = dsp->last_read_byte;
+ dolog ("empty output buffer\n");
+ /* goto error; */
}
break;
- case 0xc: /* 0 can write */
+ case 0xc: /* 0xxxxxxx can write */
retval = 0;
+ if (dsp->out_data_len == sizeof (dsp->out_data)) retval |= 0x80;
break;
case 0xd: /* timer interrupt clear */
- log("timer interrupt clear");
+ dolog ("timer interrupt clear\n");
goto error;
case 0xe: /* data available status | irq 8 ack */
/* XXX drop pic irq line here? */
- ldebug ("8 ack\n");
- retval = (0 == dsp->out_data_len) ? 0 : 0x80;
+ /* ldebug ("8 ack\n"); */
+ retval = dsp->out_data_len ? 0x80 : 0;
dsp->mixer_regs[0x82] &= ~dsp->mixer_regs[0x80];
pic_set_irq (sb.irq, 0);
break;
@@ -544,15 +628,30 @@ static IO_READ_PROTO (dsp_read)
goto error;
}
- if ((0xc != iport) && (0xe != iport)) {
- ldebug ("nport=%#x iport %#x = %#x\n",
+ if (0xe == iport) {
+ if (0 == retval) {
+ if (!dsp->nzero) {
+ ldebug ("dsp_read (nport=%#x iport %#x) = %#x, %lld\n",
+ nport, iport, retval, dsp->nzero);
+ }
+ dsp->nzero += 1;
+ }
+ else {
+ ldebug ("dsp_read (nport=%#x iport %#x) = %#x, %lld\n",
+ nport, iport, retval, dsp->nzero);
+ dsp->nzero = 0;
+ }
+ }
+ else {
+ ldebug ("dsp_read (nport=%#x iport %#x) = %#x\n",
nport, iport, retval);
}
return retval;
error:
- return 0;
+ printf ("dsp_read error %#x\n", nport);
+ return 0xff;
}
static IO_WRITE_PROTO(mixer_write_indexb)
@@ -564,12 +663,100 @@ static IO_WRITE_PROTO(mixer_write_indexb)
static IO_WRITE_PROTO(mixer_write_datab)
{
SB16State *dsp = opaque;
+ int i;
- if (dsp->mixer_nreg > 0x83)
+ linfo ("mixer [%#x] <- %#x\n", dsp->mixer_nreg, val);
+ switch (dsp->mixer_nreg) {
+ case 0x00:
+ /* Bochs */
+ dsp->mixer_regs[0x04] = 0xcc;
+ dsp->mixer_regs[0x0a] = 0x00;
+ dsp->mixer_regs[0x22] = 0xcc;
+ dsp->mixer_regs[0x26] = 0xcc;
+ dsp->mixer_regs[0x28] = 0x00;
+ dsp->mixer_regs[0x2e] = 0x00;
+ dsp->mixer_regs[0x3c] = 0x1f;
+ dsp->mixer_regs[0x3d] = 0x15;
+ dsp->mixer_regs[0x3e] = 0x0b;
+
+ for (i = 0x30; i <= 0x35; i++)
+ dsp->mixer_regs[i] = 0xc0;
+
+ for (i = 0x36; i <= 0x3b; i++)
+ dsp->mixer_regs[i] = 0x00;
+
+ for (i = 0x3f; i <= 0x43; i++)
+ dsp->mixer_regs[i] = 0x00;
+
+ for (i = 0x44; i <= 0x47; i++)
+ dsp->mixer_regs[i] = 0x80;
+
+ for (i = 0x30; i < 0x48; i++) {
+ dsp->mixer_regs[i] = 0x20;
+ }
+ break;
+
+ case 0x04:
+ case 0x0a:
+ case 0x22:
+ case 0x26:
+ case 0x28:
+ case 0x2e:
+ case 0x30:
+ case 0x31:
+ case 0x32:
+ case 0x33:
+ case 0x34:
+ case 0x35:
+ case 0x36:
+ case 0x37:
+ case 0x38:
+ case 0x39:
+ case 0x3a:
+ case 0x3b:
+ case 0x3c:
+ case 0x3d:
+ case 0x3e:
+ case 0x3f:
+ case 0x40:
+ case 0x41:
+ case 0x42:
+ case 0x43:
+ case 0x44:
+ case 0x45:
+ case 0x46:
+ case 0x47:
+ case 0x80:
+ case 0x81:
+ break;
+ default:
return;
+ }
dsp->mixer_regs[dsp->mixer_nreg] = val;
}
+static IO_WRITE_PROTO(mpu_write)
+{
+ linfo ("mpu: %#x\n", val);
+}
+
+static IO_WRITE_PROTO(adlib_write)
+{
+ linfo ("adlib: %#x\n", val);
+}
+
+static IO_READ_PROTO(mpu_read)
+{
+ linfo ("mpu read: %#x\n", nport);
+ return 0x80;
+}
+
+static IO_READ_PROTO(adlib_read)
+{
+ linfo ("adlib read: %#x\n", nport);
+ return 0;
+}
+
static IO_WRITE_PROTO(mixer_write_indexw)
{
mixer_write_indexb (opaque, nport, val & 0xff);
@@ -579,6 +766,7 @@ static IO_WRITE_PROTO(mixer_write_indexw)
static IO_READ_PROTO(mixer_read)
{
SB16State *dsp = opaque;
+ linfo ("mixer [%#x] -> %#x\n", dsp->mixer_nreg, dsp->mixer_regs[dsp->mixer_nreg]);
return dsp->mixer_regs[dsp->mixer_nreg];
}
@@ -637,6 +825,8 @@ static int SB_read_DMA (void *opaque, target_ulong addr, int size)
return 0;
if (dsp->left_till_irq < 0) {
+ ldebug ("left_till_irq < 0, %d, pos %d \n",
+ dsp->left_till_irq, dsp->dma_buffer_size);
dsp->left_till_irq += dsp->dma_buffer_size;
return dsp->dma_pos;
}
@@ -644,6 +834,7 @@ static int SB_read_DMA (void *opaque, target_ulong addr, int size)
free = AUD_get_free ();
if ((free <= 0) || (0 == size)) {
+ ldebug ("returning, since free = %d and size = %d\n", free, size);
return dsp->dma_pos;
}
@@ -656,8 +847,11 @@ static int SB_read_DMA (void *opaque, target_ulong addr, int size)
till = dsp->left_till_irq;
+#ifdef DEBUG_SB16_MOST
ldebug ("addr:%#010x free:%d till:%d size:%d\n",
addr, free, till, size);
+#endif
+
if (till <= copy) {
if (0 == dsp->dma_auto) {
copy = till;
@@ -671,7 +865,8 @@ static int SB_read_DMA (void *opaque, target_ulong addr, int size)
if (dsp->left_till_irq <= 0) {
dsp->mixer_regs[0x82] |= dsp->mixer_regs[0x80];
if (0 == noirq) {
- ldebug ("request irq\n");
+ ldebug ("request irq pos %d, left %d\n",
+ dsp->dma_pos, dsp->left_till_irq);
pic_set_irq(sb.irq, 1);
}
@@ -680,9 +875,11 @@ static int SB_read_DMA (void *opaque, target_ulong addr, int size)
}
}
+#ifdef DEBUG_SB16_MOST
ldebug ("pos %5d free %5d size %5d till % 5d copy %5d dma size %5d\n",
dsp->dma_pos, free, size, dsp->left_till_irq, copy,
dsp->dma_buffer_size);
+#endif
if (dsp->left_till_irq <= 0) {
dsp->left_till_irq += dsp->dma_buffer_size;
@@ -703,7 +900,7 @@ static int magic_of_irq (int irq)
case 10:
return 8;
default:
- log ("bad irq %d", irq);
+ dolog ("bad irq %d\n", irq);
return 2;
}
}
@@ -721,12 +918,42 @@ static int irq_of_magic (int magic)
case 8:
return 10;
default:
- log ("bad irq magic %d", magic);
+ dolog ("bad irq magic %d\n", magic);
return 2;
}
}
#endif
+#ifdef SB16_TRAP_ALL
+static IO_READ_PROTO (trap_read)
+{
+ switch (nport) {
+ case 0x220:
+ return 0;
+ case 0x226:
+ case 0x22a:
+ case 0x22c:
+ case 0x22d:
+ case 0x22e:
+ case 0x22f:
+ return dsp_read (opaque, nport);
+ }
+ linfo ("trap_read: %#x\n", nport);
+ return 0xff;
+}
+
+static IO_WRITE_PROTO (trap_write)
+{
+ switch (nport) {
+ case 0x226:
+ case 0x22c:
+ dsp_write (opaque, nport, val);
+ return;
+ }
+ linfo ("trap_write: %#x = %#x\n", nport, val);
+}
+#endif
+
void SB16_init (void)
{
SB16State *s = &dsp;
@@ -736,13 +963,23 @@ void SB16_init (void)
memset(s->mixer_regs, 0xff, sizeof(s->mixer_regs));
+ s->mixer_regs[0x00] = 0;
s->mixer_regs[0x0e] = ~0;
s->mixer_regs[0x80] = magic_of_irq (sb.irq);
- s->mixer_regs[0x81] = 0x20 | (sb.dma << 1);
-
- for (i = 0x30; i < 0x48; i++) {
- s->mixer_regs[i] = 0x20;
+ s->mixer_regs[0x81] = 0x80 | 0x10 | (sb.dma << 1);
+ s->mixer_regs[0x82] = 0;
+ s->mixer_regs[0xfd] = 16; /* bochs */
+ s->mixer_regs[0xfe] = 6; /* bochs */
+ mixer_write_indexw (s, 0x224, 0);
+
+#ifdef SB16_TRAP_ALL
+ for (i = 0; i < 0x100; i++) {
+ if (i != 4 && i != 5) {
+ register_ioport_write (sb.port + i, 1, 1, trap_write, s);
+ register_ioport_read (sb.port + i, 1, 1, trap_read, s);
+ }
}
+#else
for (i = 0; i < LENOFA (dsp_write_ports); i++) {
register_ioport_write (sb.port + dsp_write_ports[i], 1, 1, dsp_write, s);
@@ -751,12 +988,20 @@ void SB16_init (void)
for (i = 0; i < LENOFA (dsp_read_ports); i++) {
register_ioport_read (sb.port + dsp_read_ports[i], 1, 1, dsp_read, s);
}
+#endif
register_ioport_write (sb.port + 0x4, 1, 1, mixer_write_indexb, s);
register_ioport_write (sb.port + 0x4, 1, 2, mixer_write_indexw, s);
register_ioport_read (sb.port + 0x5, 1, 1, mixer_read, s);
register_ioport_write (sb.port + 0x5, 1, 1, mixer_write_datab, s);
+ for (i = 0; 4 < 4; i++) {
+ register_ioport_read (0x330 + i, 1, 1, mpu_read, s);
+ register_ioport_write (0x330 + i, 1, 1, mpu_write, s);
+ register_ioport_read (0x388 + i, 1, 1, adlib_read, s);
+ register_ioport_write (0x388 + i, 1, 1, adlib_write, s);
+ }
+
DMA_register_channel (sb.hdma, SB_read_DMA, s);
DMA_register_channel (sb.dma, SB_read_DMA, s);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-30 09:30:59 +0000