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Update for MPU401 by TheCollector1995, fixing NT - pending checking with MPU401 TechRef.

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This commit is contained in:
waltje
2017-11-23 21:45:10 -05:00
parent 397c693170
commit d287293a75
1 changed files with 764 additions and 653 deletions
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431
src/sound/snd_mpu401.c
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@@ -8,7 +8,7 @@
*
* Roland MPU-401 emulation.
*
* Version: @(#)snd_mpu401.c 1.0.6 2017/11/04
* Version: @(#)snd_mpu401.c 1.0.7 2017/11/23
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* DOSBox Team,
@@ -35,14 +35,11 @@
#include "midi.h"
enum
{
enum {
STATUS_OUTPUT_NOT_READY = 0x40,
STATUS_INPUT_NOT_READY = 0x80
};
static void MPU401_WriteCommand(mpu_t *mpu, uint8_t val);
static void MPU401_EOIHandlerDispatch(void *p);
int mpu401_standalone_enable = 0;
@@ -55,6 +52,11 @@ static int mpu401_do_log = ENABLE_MPU401_LOG;
static char logfmt[512];
#endif
static void MPU401_WriteCommand(mpu_t *mpu, uint8_t val);
static void MPU401_EOIHandlerDispatch(void *p);
static void
mpulog(const char *fmt, ...)
{
@@ -74,22 +76,19 @@ mpulog(const char *fmt, ...)
#define pclog mpulog
static void QueueByte(mpu_t *mpu, uint8_t data)
{
if (mpu->state.block_ack)
static void
QueueByte(mpu_t *mpu, uint8_t data)
{
if (mpu->state.block_ack) {
mpu->state.block_ack=0;
return;
}
if (mpu->queue_used == 0 && mpu->intelligent)
{
if (mpu->queue_used == 0 && mpu->intelligent) {
mpu->state.irq_pending=1;
//PIC_ActivateIRQ(mpu->irq);
picint(1 << mpu->irq);
}
if (mpu->queue_used < MPU401_QUEUE)
{
if (mpu->queue_used < MPU401_QUEUE) {
int pos = mpu->queue_used+mpu->queue_pos;
if (mpu->queue_pos >= MPU401_QUEUE)
@@ -100,22 +99,26 @@ static void QueueByte(mpu_t *mpu, uint8_t data)
mpu->queue_used++;
mpu->queue[pos]=data;
}
else
} else
pclog("MPU401:Data queue full\n");
}
static void ClrQueue(mpu_t *mpu)
static void
ClrQueue(mpu_t *mpu)
{
mpu->queue_used=0;
mpu->queue_pos=0;
}
static void MPU401_Reset(mpu_t *mpu)
static void
MPU401_Reset(mpu_t *mpu)
{
uint8_t i;
picintc(1 << mpu->irq);
mpu->mode = (mpu->intelligent ? M_INTELLIGENT : M_UART);
mpu->state.eoi_scheduled = 0;
mpu->state.wsd = 0;
@@ -139,165 +142,195 @@ static void MPU401_Reset(mpu_t *mpu)
mpu->clock.clock_to_host = 0;
mpu->clock.cth_rate = 60;
mpu->clock.cth_counter = 0;
ClrQueue(mpu);
mpu->state.req_mask = 0;
mpu->condbuf.counter = 0;
mpu->condbuf.type = T_OVERFLOW;
for (i=0;i<8;i++) {mpu->playbuf[i].type=T_OVERFLOW;mpu->playbuf[i].counter=0;}
for (i=0;i<8;i++) {
mpu->playbuf[i].type = T_OVERFLOW;
mpu->playbuf[i].counter = 0;
}
}
static void MPU401_ResetDone(void *p)
static void
MPU401_ResetDone(void *priv)
{
mpu_t *mpu = (mpu_t *)p;
mpu_t *mpu = (mpu_t *)priv;
pclog("MPU-401 reset callback\n");
mpu401_reset_callback = 0LL;
mpu->state.reset=0;
if (mpu->state.cmd_pending)
{
if (mpu->state.cmd_pending) {
MPU401_WriteCommand(mpu, mpu->state.cmd_pending-1);
mpu->state.cmd_pending=0;
}
}
static void MPU401_WriteCommand(mpu_t *mpu, uint8_t val)
static void
MPU401_WriteCommand(mpu_t *mpu, uint8_t val)
{
uint8_t i;
if (mpu->state.reset)
{
if (mpu->state.reset) {
mpu->state.cmd_pending=val+1;
}
if (val<=0x2f)
{
switch (val&3)
{ /* MIDI stop, start, continue */
case 1: {midi_write(0xfc);break;}
case 2: {midi_write(0xfa);break;}
case 3: {midi_write(0xfb);break;}
if (val <= 0x2f) {
switch (val&3) { /* MIDI stop, start, continue */
case 1:
midi_write(0xfc);
break;
case 2:
midi_write(0xfa);
break;
case 3:
midi_write(0xfb);
break;
}
// if (val&0x20) LOG(LOG_MISC,LOG_ERROR)("MPU-401:Unhandled Recording Command %x",(int)val);
switch (val&0xc)
{
#if 0
if (val&0x20)
pclog("MPU-401:Unhandled Recording Command %x",(int)val);
#endif
switch (val & 0xc) {
case 0x4: /* Stop */
mpu->state.playing = 0;
mpu401_event_callback = 0LL;
for (i=0xb0;i<0xbf;i++)
{ /* All notes off */
for (i=0xb0; i<0xbf; i++) {
/* All notes off */
midi_write(i);
midi_write(0x7b);
midi_write(0);
}
break;
case 0x8: /* Play */
// LOG(LOG_MISC,LOG_NORMAL)("MPU-401:Intelligent mode playback started");
// pclog("MPU-401:Intelligent mode playback started");
mpu->state.playing = 1;
mpu401_event_callback = (MPU401_TIMECONSTANT / (mpu->clock.tempo*mpu->clock.timebase)) * 1000LL * TIMER_USEC;
ClrQueue(mpu);
break;
}
}
else if (val>=0xa0 && val<=0xa7)
{ /* Request play counter */
} else if (val>=0xa0 && val<=0xa7) { /* Request play counter */
if (mpu->state.cmask&(1<<(val&7))) QueueByte(mpu, mpu->playbuf[val&7].counter);
}
else if (val>=0xd0 && val<=0xd7)
{ /* Send data */
} else if (val>=0xd0 && val<=0xd7) { /* Send data */
mpu->state.old_chan = mpu->state.channel;
mpu->state.channel= val & 7;
mpu->state.wsd = 1;
mpu->state.wsm = 0;
mpu->state.wsd_start = 1;
}
else
switch (val)
{
} else switch (val) {
case 0xdf: /* Send system message */
mpu->state.wsd = 0;
mpu->state.wsm = 1;
mpu->state.wsd_start = 1;
break;
case 0x8e: /* Conductor */
mpu->state.cond_set = 0;
break;
case 0x8f:
mpu->state.cond_set = 1;
break;
case 0x94: /* Clock to host */
mpu->clock.clock_to_host=0;
break;
case 0x95:
mpu->clock.clock_to_host=1;
break;
case 0xc2: /* Internal timebase */
mpu->clock.timebase=48;
break;
case 0xc3:
mpu->clock.timebase=72;
break;
case 0xc4:
mpu->clock.timebase=96;
break;
case 0xc5:
mpu->clock.timebase=120;
break;
case 0xc6:
mpu->clock.timebase=144;
break;
case 0xc7:
mpu->clock.timebase=168;
break;
case 0xc8:
mpu->clock.timebase=192;
break;
/* Commands with data byte */
case 0xe0: case 0xe1: case 0xe2: case 0xe4: case 0xe6:
case 0xe7: case 0xec: case 0xed: case 0xee: case 0xef:
mpu->state.command_byte=val;
break;
/* Commands 0xa# returning data */
case 0xab: /* Request and clear recording counter */
QueueByte(mpu, MSG_MPU_ACK);
QueueByte(mpu, 0);
return;
case 0xac: /* Request version */
QueueByte(mpu, MSG_MPU_ACK);
QueueByte(mpu, MPU401_VERSION);
return;
case 0xad: /* Request revision */
QueueByte(mpu, MSG_MPU_ACK);
QueueByte(mpu, MPU401_REVISION);
return;
case 0xaf: /* Request tempo */
QueueByte(mpu, MSG_MPU_ACK);
QueueByte(mpu, mpu->clock.tempo);
return;
case 0xb1: /* Reset relative tempo */
mpu->clock.tempo_rel=40;
break;
case 0xb9: /* Clear play map */
case 0xb8: /* Clear play counters */
for (i=0xb0;i<0xbf;i++)
{ /* All notes off */
for (i=0xb0;i<0xbf;i++) {
/* All notes off */
midi_write(i);
midi_write(0x7b);
midi_write(0);
}
for (i=0;i<8;i++)
{
for (i=0;i<8;i++) {
mpu->playbuf[i].counter=0;
mpu->playbuf[i].type=T_OVERFLOW;
}
mpu->condbuf.counter=0;
mpu->condbuf.type=T_OVERFLOW;
if (!(mpu->state.conductor=mpu->state.cond_set)) mpu->state.cond_req=0;
if (!(mpu->state.conductor=mpu->state.cond_set))
mpu->state.cond_req=0;
mpu->state.amask=mpu->state.tmask;
mpu->state.req_mask=0;
mpu->state.irq_pending=1;
break;
case 0xff: /* Reset MPU-401 */
pclog("MPU-401:Reset %X\n",val);
mpu401_reset_callback = MPU401_RESETBUSY * 33LL * TIMER_USEC;
@@ -307,55 +340,67 @@ static void MPU401_WriteCommand(mpu_t *mpu, uint8_t val)
if (mpu->mode==M_UART) return;//do not send ack in UART mode
#endif
break;
case 0x3f: /* UART mode */
pclog("MPU-401:Set UART mode %X\n",val);
mpu->mode=M_UART;
break;
default:;
//LOG(LOG_MISC,LOG_NORMAL)("MPU-401:Unhandled command %X",val);
//pclog("MPU-401:Unhandled command %X",val);
}
QueueByte(mpu, MSG_MPU_ACK);
}
static void MPU401_WriteData(mpu_t *mpu, uint8_t val)
static void
MPU401_WriteData(mpu_t *mpu, uint8_t val)
{
if (mpu->mode==M_UART) {midi_write(val); return;}
switch (mpu->state.command_byte)
{ /* 0xe# command data */
switch (mpu->state.command_byte) { /* 0xe# command data */
case 0x00:
break;
case 0xe0: /* Set tempo */
mpu->state.command_byte=0;
mpu->clock.tempo=val;
return;
case 0xe1: /* Set relative tempo */
mpu->state.command_byte=0;
if (val!=0x40) //default value
pclog("MPU-401:Relative tempo change not implemented\n");
return;
case 0xe7: /* Set internal clock to host interval */
mpu->state.command_byte=0;
mpu->clock.cth_rate=val>>2;
return;
case 0xec: /* Set active track mask */
mpu->state.command_byte=0;
mpu->state.tmask=val;
return;
case 0xed: /* Set play counter mask */
mpu->state.command_byte=0;
mpu->state.cmask=val;
return;
case 0xee: /* Set 1-8 MIDI channel mask */
mpu->state.command_byte=0;
mpu->state.midi_mask&=0xff00;
mpu->state.midi_mask|=val;
return;
case 0xef: /* Set 9-16 MIDI channel mask */
mpu->state.command_byte=0;
mpu->state.midi_mask&=0x00ff;
mpu->state.midi_mask|=((uint16_t)val)<<8;
return;
//case 0xe2: /* Set graduation for relative tempo */
//case 0xe4: /* Set metronome */
//case 0xe6: /* Set metronome measure length */
@@ -363,11 +408,12 @@ static void MPU401_WriteData(mpu_t *mpu, uint8_t val)
mpu->state.command_byte=0;
return;
}
static int length,cnt,posd;
if (mpu->state.wsd)
{ /* Directly send MIDI message */
if (mpu->state.wsd_start)
{
if (mpu->state.wsd) {
/* Directly send MIDI message */
if (mpu->state.wsd_start) {
mpu->state.wsd_start=0;
cnt=0;
switch (val&0xf0) {
@@ -375,52 +421,77 @@ static void MPU401_WriteData(mpu_t *mpu, uint8_t val)
mpu->playbuf[mpu->state.channel].value[0]=val;
length=2;
break;
case 0x80:case 0x90:case 0xa0:case 0xb0:case 0xe0:
mpu->playbuf[mpu->state.channel].value[0]=val;
length=3;
break;
case 0xf0:
//pclog("MPU-401:Illegal WSD byte\n");
mpu->state.wsd=0;
mpu->state.channel=mpu->state.old_chan;
return;
default: /* MIDI with running status */
cnt++;
midi_write(mpu->playbuf[mpu->state.channel].value[0]);
}
}
if (cnt<length) {midi_write(val);cnt++;}
if (cnt==length) {
mpu->state.wsd=0;
mpu->state.channel=mpu->state.old_chan;
}
return;
}
if (mpu->state.wsm)
{ /* Directly send system message */
if (mpu->state.wsm) { /* Directly send system message */
if (val==MSG_EOX) {midi_write(MSG_EOX);mpu->state.wsm=0;return;}
if (mpu->state.wsd_start) {
mpu->state.wsd_start=0;
cnt=0;
switch (val)
{
case 0xf2:{ length=3; break;}
case 0xf3:{ length=2; break;}
case 0xf6:{ length=1; break;}
case 0xf0:{ length=0; break;}
switch (val) {
case 0xf2:
length=3;
break;
case 0xf3:
length=2;
break;
case 0xf6:
length=1;
break;
case 0xf0:
length=0;
break;
default:
length=0;
}
}
if (!length || cnt<length) {midi_write(val);cnt++;}
if (!length || cnt<length) {
midi_write(val);
cnt++;
}
if (cnt==length) mpu->state.wsm=0;
return;
}
if (mpu->state.cond_req)
{ /* Command */
if (mpu->state.cond_req) {
/* Command */
switch (mpu->state.data_onoff) {
case -1:
return;
case 0: /* Timing byte */
mpu->condbuf.vlength=0;
if (val<0xf0) mpu->state.data_onoff++;
@@ -429,18 +500,22 @@ static void MPU401_WriteData(mpu_t *mpu, uint8_t val)
MPU401_EOIHandlerDispatch(mpu);
return;
}
if (val==0) mpu->state.send_now=1;
else mpu->state.send_now=0;
mpu->condbuf.counter=val;
break;
case 1: /* Command byte #1 */
mpu->condbuf.type=T_COMMAND;
if (val==0xf8 || val==0xf9) mpu->condbuf.type=T_OVERFLOW;
if (val==0xf8 || val==0xf9)
mpu->condbuf.type=T_OVERFLOW;
mpu->condbuf.value[mpu->condbuf.vlength]=val;
mpu->condbuf.vlength++;
if ((val&0xf0)!=0xe0) MPU401_EOIHandlerDispatch(mpu);
else mpu->state.data_onoff++;
break;
case 2:/* Command byte #2 */
mpu->condbuf.value[mpu->condbuf.vlength]=val;
mpu->condbuf.vlength++;
@@ -449,10 +524,12 @@ static void MPU401_WriteData(mpu_t *mpu, uint8_t val)
}
return;
}
switch (mpu->state.data_onoff)
{ /* Data */
switch (mpu->state.data_onoff) {
/* Data */
case -1:
return;
case 0: /* Timing byte */
if (val<0xf0) mpu->state.data_onoff=1;
else {
@@ -464,11 +541,11 @@ static void MPU401_WriteData(mpu_t *mpu, uint8_t val)
else mpu->state.send_now=0;
mpu->playbuf[mpu->state.channel].counter=val;
break;
case 1: /* MIDI */
mpu->playbuf[mpu->state.channel].vlength++;
posd=mpu->playbuf[mpu->state.channel].vlength;
if (posd==1) {
switch (val&0xf0) {
if (posd==1) switch (val&0xf0) {
case 0xf0: /* System message or mark */
if (val>0xf7) {
mpu->playbuf[mpu->state.channel].type=T_MARK;
@@ -481,14 +558,17 @@ static void MPU401_WriteData(mpu_t *mpu, uint8_t val)
length=1;
}
break;
case 0xc0: case 0xd0: /* MIDI Message */
mpu->playbuf[mpu->state.channel].type=T_MIDI_NORM;
length=mpu->playbuf[mpu->state.channel].length=2;
break;
case 0x80: case 0x90: case 0xa0: case 0xb0: case 0xe0:
mpu->playbuf[mpu->state.channel].type=T_MIDI_NORM;
length=mpu->playbuf[mpu->state.channel].length=3;
break;
default: /* MIDI data with running status */
posd++;
mpu->playbuf[mpu->state.channel].vlength++;
@@ -496,85 +576,100 @@ static void MPU401_WriteData(mpu_t *mpu, uint8_t val)
length=mpu->playbuf[mpu->state.channel].length;
break;
}
}
if (!(posd==1 && val>=0xf0)) mpu->playbuf[mpu->state.channel].value[posd-1]=val;
if (!(posd==1 && val>=0xf0))
mpu->playbuf[mpu->state.channel].value[posd-1]=val;
if (posd==length) MPU401_EOIHandlerDispatch(mpu);
}
}
static void MPU401_IntelligentOut(mpu_t *mpu, uint8_t chan)
static void
MPU401_IntelligentOut(mpu_t *mpu, uint8_t chan)
{
uint8_t val;
uint8_t i;
switch (mpu->playbuf[chan].type)
{
switch (mpu->playbuf[chan].type) {
case T_OVERFLOW:
break;
case T_MARK:
val=mpu->playbuf[chan].sys_val;
if (val==0xfc)
{
if (val==0xfc) {
midi_write(val);
mpu->state.amask&=~(1<<chan);
mpu->state.req_mask&=~(1<<chan);
}
break;
case T_MIDI_NORM:
for (i=0;i<mpu->playbuf[chan].vlength;i++)
midi_write(mpu->playbuf[chan].value[i]);
break;
default:
break;
}
}
static void UpdateTrack(mpu_t *mpu, uint8_t chan)
static void
UpdateTrack(mpu_t *mpu, uint8_t chan)
{
MPU401_IntelligentOut(mpu, chan);
if (mpu->state.amask&(1<<chan))
{
if (mpu->state.amask&(1<<chan)) {
mpu->playbuf[chan].vlength=0;
mpu->playbuf[chan].type=T_OVERFLOW;
mpu->playbuf[chan].counter=0xf0;
mpu->state.req_mask|=(1<<chan);
} else {
if (mpu->state.amask==0 && !mpu->state.conductor) mpu->state.req_mask|=(1<<12);
if (mpu->state.amask==0 && !mpu->state.conductor)
mpu->state.req_mask|=(1<<12);
}
}
static void UpdateConductor(mpu_t *mpu)
{
if (mpu->condbuf.value[0]==0xfc)
static void
UpdateConductor(mpu_t *mpu)
{
if (mpu->condbuf.value[0]==0xfc) {
mpu->condbuf.value[0]=0;
mpu->state.conductor=0;
mpu->state.req_mask&=~(1<<9);
if (mpu->state.amask==0) mpu->state.req_mask|=(1<<12);
if (mpu->state.amask==0)
mpu->state.req_mask|=(1<<12);
return;
}
mpu->condbuf.vlength=0;
mpu->condbuf.counter=0xf0;
mpu->state.req_mask|=(1<<9);
}
//Updates counters and requests new data on "End of Input"
static void MPU401_EOIHandler(void *p)
static void
MPU401_EOIHandler(void *priv)
{
mpu_t *mpu = (mpu_t *)p;
mpu_t *mpu = (mpu_t *)priv;
uint8_t i;
pclog("MPU-401 end of input callback\n");
mpu401_eoi_callback = 0LL;
mpu->state.eoi_scheduled=0;
if (mpu->state.send_now)
{
if (mpu->state.send_now) {
mpu->state.send_now=0;
if (mpu->state.cond_req) UpdateConductor(mpu);
else UpdateTrack(mpu, mpu->state.channel);
}
mpu->state.irq_pending=0;
if (!mpu->state.playing || !mpu->state.req_mask) return;
i=0;
do {
if (mpu->state.req_mask&(1<<i)) {
@@ -585,73 +680,78 @@ static void MPU401_EOIHandler(void *p)
} while ((i++)<16);
}
static void MPU401_EOIHandlerDispatch(void *p)
{
mpu_t *mpu = (mpu_t *)p;
if (mpu->state.send_now)
static void
MPU401_EOIHandlerDispatch(void *priv)
{
mpu_t *mpu = (mpu_t *)priv;
if (mpu->state.send_now) {
mpu->state.eoi_scheduled=1;
mpu401_eoi_callback = 60LL * TIMER_USEC; /* Possible a bit longer */
}
else if (!mpu->state.eoi_scheduled)
} else if (!mpu->state.eoi_scheduled)
MPU401_EOIHandler(mpu);
}
static void imf_write(uint16_t addr, uint8_t val, void *p)
static void
imf_write(uint16_t addr, uint8_t val, void *priv)
{
pclog("IMF:Wr %4X,%X\n", addr, val);
}
uint8_t MPU401_ReadData(mpu_t *mpu)
uint8_t
MPU401_ReadData(mpu_t *mpu)
{
uint8_t ret;
ret = MSG_MPU_ACK;
if (mpu->queue_used)
{
if (mpu->queue_used) {
if (mpu->queue_pos>=MPU401_QUEUE) mpu->queue_pos-=MPU401_QUEUE;
ret=mpu->queue[mpu->queue_pos];
mpu->queue_pos++;mpu->queue_used--;
}
if (!mpu->intelligent) return ret;
if (mpu->queue_used == 0) picintc(1 << mpu->irq);
if (ret>=0xf0 && ret<=0xf7)
{ /* MIDI data request */
if (ret>=0xf0 && ret<=0xf7) {
/* MIDI data request */
mpu->state.channel=ret&7;
mpu->state.data_onoff=0;
mpu->state.cond_req=0;
}
if (ret==MSG_MPU_COMMAND_REQ)
{
if (ret==MSG_MPU_COMMAND_REQ) {
mpu->state.data_onoff=0;
mpu->state.cond_req=1;
if (mpu->condbuf.type!=T_OVERFLOW)
{
if (mpu->condbuf.type!=T_OVERFLOW) {
mpu->state.block_ack=1;
MPU401_WriteCommand(mpu, mpu->condbuf.value[0]);
if (mpu->state.command_byte) MPU401_WriteData(mpu, mpu->condbuf.value[1]);
if (mpu->state.command_byte)
MPU401_WriteData(mpu, mpu->condbuf.value[1]);
}
mpu->condbuf.type=T_OVERFLOW;
}
if (ret==MSG_MPU_END || ret==MSG_MPU_CLOCK || ret==MSG_MPU_ACK) {
mpu->state.data_onoff=-1;
MPU401_EOIHandlerDispatch(mpu);
}
return ret;
return(ret);
}
static void mpu401_write(uint16_t addr, uint8_t val, void *p)
static void
mpu401_write(uint16_t addr, uint8_t val, void *priv)
{
mpu_t *mpu = (mpu_t *)p;
mpu_t *mpu = (mpu_t *)priv;
/* pclog("MPU401 Write Port %04X, val %x\n", addr, val); */
switch (addr & 1)
{
switch (addr & 1) {
case 0: /*Data*/
MPU401_WriteData(mpu, val);
pclog("Write Data (0x330) %X\n", val);
@@ -664,13 +764,14 @@ static void mpu401_write(uint16_t addr, uint8_t val, void *p)
}
}
static uint8_t mpu401_read(uint16_t addr, void *p)
static uint8_t
mpu401_read(uint16_t addr, void *priv)
{
mpu_t *mpu = (mpu_t *)p;
mpu_t *mpu = (mpu_t *)priv;
uint8_t ret = 0;
switch (addr & 1)
{
switch (addr & 1) {
case 0: //Read Data
ret = MPU401_ReadData(mpu);
pclog("Read Data (0x330) %X\n", ret);
@@ -679,38 +780,45 @@ static uint8_t mpu401_read(uint16_t addr, void *p)
case 1: //Read Status
if (mpu->state.cmd_pending) ret=STATUS_OUTPUT_NOT_READY;
if (!mpu->queue_used) ret=STATUS_INPUT_NOT_READY;
ret |= 0x3f; //FIXME: check with MPU401 TechRef
pclog("Read Status (0x331) %x\n", ret);
break;
}
/* pclog("MPU401 Read Port %04X, ret %x\n", addr, ret); */
return ret;
return(ret);
}
static void MPU401_Event(void *p)
static void
MPU401_Event(void *priv)
{
mpu_t *mpu = (mpu_t *)p;
uint8_t i;
mpu_t *mpu = (mpu_t *)priv;
int new_time;
uint8_t i;
pclog("MPU-401 event callback\n");
if (mpu->mode==M_UART)
{
if (mpu->mode==M_UART) {
mpu401_event_callback = 0LL;
return;
}
if (mpu->state.irq_pending) goto next_event;
for (i=0;i<8;i++) { /* Decrease counters */
if (mpu->state.amask&(1<<i)) {
mpu->playbuf[i].counter--;
if (mpu->playbuf[i].counter<=0) UpdateTrack(mpu, i);
}
}
if (mpu->state.conductor) {
mpu->condbuf.counter--;
if (mpu->condbuf.counter<=0) UpdateConductor(mpu);
}
if (mpu->clock.clock_to_host) {
mpu->clock.cth_counter++;
if (mpu->clock.cth_counter >= mpu->clock.cth_rate) {
@@ -718,27 +826,28 @@ static void MPU401_Event(void *p)
mpu->state.req_mask|=(1<<13);
}
}
if (!mpu->state.irq_pending && mpu->state.req_mask) MPU401_EOIHandler(mpu);
if (!mpu->state.irq_pending && mpu->state.req_mask)
MPU401_EOIHandler(mpu);
next_event:
/* mpu401_event_callback = 0LL; */
new_time = (mpu->clock.tempo * mpu->clock.timebase);
if (new_time == 0)
{
if (new_time == 0) {
mpu401_event_callback = 0LL;
return;
}
else
{
} else {
mpu401_event_callback += (MPU401_TIMECONSTANT/new_time) * 1000LL * TIMER_USEC;
pclog("Next event after %i us (time constant: %i)\n", (int) ((MPU401_TIMECONSTANT/new_time) * 1000 * TIMER_USEC), (int) MPU401_TIMECONSTANT);
}
}
void mpu401_init(mpu_t *mpu, uint16_t addr, int irq, int mode)
void
mpu401_init(mpu_t *mpu, uint16_t addr, int irq, int mode)
{
#if 0
if (mode != M_INTELLIGENT)
{
if (mode != M_INTELLIGENT) {
mpu401_uart_init(mpu, addr);
return;
}
@@ -757,8 +866,10 @@ void mpu401_init(mpu_t *mpu, uint16_t addr, int irq, int mode)
mpu401_eoi_callback = 0LL;
mpu401_reset_callback = 0LL;
io_sethandler(addr, 0x0002, mpu401_read, NULL, NULL, mpu401_write, NULL, NULL, mpu);
io_sethandler(0x2A20, 0x0010, NULL, NULL, NULL, imf_write, NULL, NULL, mpu);
io_sethandler(addr, 2,
mpu401_read, NULL, NULL, mpu401_write, NULL, NULL, mpu);
io_sethandler(0x2A20, 16,
NULL, NULL, NULL, imf_write, NULL, NULL, mpu);
timer_add(MPU401_Event, &mpu401_event_callback, &mpu401_event_callback, mpu);
timer_add(MPU401_EOIHandler, &mpu401_eoi_callback, &mpu401_eoi_callback, mpu);
timer_add(MPU401_ResetDone, &mpu401_reset_callback, &mpu401_reset_callback, mpu);
@@ -766,28 +877,25 @@ void mpu401_init(mpu_t *mpu, uint16_t addr, int irq, int mode)
MPU401_Reset(mpu);
}
void mpu401_device_add(void)
void
mpu401_device_add(void)
{
char *n;
if (!mpu401_standalone_enable)
{
return;
}
if (!mpu401_standalone_enable) return;
n = sound_card_get_internal_name(sound_card_current);
if (n != NULL)
{
if (!strcmp(n, "sb16") || !strcmp(n, "sbawe32"))
{
return;
}
if (n != NULL) {
if (!strcmp(n, "sb16") || !strcmp(n, "sbawe32")) return;
}
device_add(&mpu401_device);
}
void *mpu401_standalone_init(device_t *info)
static void *
mpu401_standalone_init(device_t *info)
{
mpu_t *mpu;
@@ -797,16 +905,19 @@ void *mpu401_standalone_init(device_t *info)
pclog("mpu_init\n");
mpu401_init(mpu, device_get_config_hex16("base"), device_get_config_int("irq"), device_get_config_int("mode"));
return mpu;
return(mpu);
}
void mpu401_standalone_close(void *p)
static void
mpu401_standalone_close(void *priv)
{
mpu_t *mpu = (mpu_t *)p;
mpu_t *mpu = (mpu_t *)priv;
free(mpu);
}
static device_config_t mpu401_standalone_config[] =
{
{
@@ -868,13 +979,13 @@ static device_config_t mpu401_standalone_config[] =
}
};
device_t mpu401_device =
{
device_t mpu401_device = {
"MPU-401 (Standalone)",
0, 0,
mpu401_standalone_init,
mpu401_standalone_close,
NULL, NULL, NULL,
mpu401_standalone_init, mpu401_standalone_close, NULL,
NULL,
NULL,
NULL,
NULL,
mpu401_standalone_config