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Fixed victory self-test issue (FIFO must NOT be cleared on processing of a STOP frame, only on a new speak external command. victory is pedantic about this.), and in the process also fixed a bug regarding reading /READY state when not in speak external mode (the FIFO being full should NOT force /READY inactive in that case!)

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[Lord Nightmare]
This commit is contained in:
Jonathan Gevaryahu 2010-04-12 03:17:56 +00:00
parent 81a3a00d74
commit ea06bcd124
1 changed files with 26 additions and 16 deletions
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40
src/emu/sound/tms5220.c
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@ -208,14 +208,16 @@ device), PES Speech adapter (serial port connection)
// above dumps the contents of each decoded speech frame as hex
#undef DEBUG_FRAME_INFO
// above dumps information about each decoded speech frame
#undef DEBUG_FRAME_ERRORS
// above dumps info if a frame ran out of data
#undef DEBUG_COMMAND_DUMP
// above dumps all non-speech-data command writes
#undef DEBUG_PIN_READS
// above spams the errorlog with i/o ready messages whenever the ready or irq pin is read
#undef DEBUG_GENERATION
// above dumps some debug information related to the sample generation loop, i.e. when ramp frames happen
#undef DEBUG_IO_READY
// above debugs the io ready callback
#undef DEBUG_IO_READY_READ
// above spams the errorlog with i/o ready messages whenever the ready pin is read
#undef DEBUG_RS_WS
// above debugs the new up-and-coming tms5220_data_r and data_w access methods which actually respect rs and ws
@ -456,12 +458,12 @@ static void tms5220_data_write(tms5220_state *tms, int data)
if (tms->speak_external)
tms->buffer_empty = 0;
#ifdef DEBUG_FIFO
fprintf(stderr,"data_write: Added byte to FIFO (current count=%2d)\n", tms->fifo_count);
logerror("data_write: Added byte to FIFO (current count=%2d)\n", tms->fifo_count);
}
else
{
fprintf(stderr,"data_write: Ran out of room in the FIFO!\n");
logerror("data_write: Ran out of room in the FIFO!\n");
// at this point, /READY should remain HIGH/inactive until the fifo has at least one byte open in it.
#endif
}
@ -608,7 +610,7 @@ static int tms5220_status_read(tms5220_state *tms)
/* clear the interrupt pin on status read */
set_interrupt_state(tms, 0);
#ifdef VERBOSE
#ifdef DEBUG_PIN_READS
logerror("Status read: TS=%d BL=%d BE=%d\n", tms->talk_status, tms->buffer_low, tms->buffer_empty);
#endif
@ -626,10 +628,10 @@ static int tms5220_status_read(tms5220_state *tms)
static int tms5220_ready_read(tms5220_state *tms)
{
#ifdef DEBUG_IO_READY_READ
logerror("io_ready %d\n", tms->io_ready);
#ifdef DEBUG_PIN_READS
logerror("ready_read: ready pin read, io_ready is %d, fifo count is %d\n", tms->io_ready, tms->fifo_count);
#endif
return (tms->fifo_count < FIFO_SIZE) && tms->io_ready;
return ((tms->fifo_count < FIFO_SIZE)||(!tms->speak_external)) && tms->io_ready;
}
@ -682,6 +684,9 @@ static int tms5220_cycles_to_ready(tms5220_state *tms)
static int tms5220_int_read(tms5220_state *tms)
{
#ifdef DEBUG_PIN_READS
logerror("int_read: irq pin read, state is %d\n", tms->irq_pin);
#endif
return tms->irq_pin;
}
@ -745,9 +750,7 @@ static void tms5220_process(tms5220_state *tms, INT16 *buffer, unsigned int size
tms->speaking_now = tms->talk_status = tms->speak_external = 0;
set_interrupt_state(tms, 1); // TS went inactive, so int is raised
tms->sample_count = reload_table[tms->tms5220c_rate&0x3]; // = 0;
//tms->fifo_head = tms->fifo_tail = tms->fifo_count = tms->fifo_bits_taken = 0;
update_flags_and_ints(tms);
tms->device->reset(); // shouldn't be necessary. code still needs work. - LN
goto empty;
}
@ -1343,7 +1346,7 @@ static void parse_frame(tms5220_state *tms)
return;
ranout:
#ifdef DEBUG_FRAME_INFO
#ifdef DEBUG_FRAME_ERRORS
logerror("Ran out of bits on a parse!\n");
#endif
/* this is an error condition; mark the buffer empty and turn off speaking */
@ -1367,6 +1370,9 @@ static void parse_frame(tms5220_state *tms)
static void set_interrupt_state(tms5220_state *tms, int state)
{
#ifdef DEBUG_PIN_READS
logerror("irq pin set to state %d\n", state);
#endif
if (tms->irq_func.write && state != tms->irq_pin)
devcb_call_write_line(&tms->irq_func, !state);
tms->irq_pin = state;
@ -1496,8 +1502,8 @@ static TIMER_CALLBACK( io_ready_cb )
/* Write */
/* bring up to date first */
#ifdef DEBUG_IO_READY
logerror("Service write %02x\n", tms->write_latch);
fprintf(stderr, "Processed write data: %02X\n", tms->write_latch);
logerror("Serviced write: %02x\n", tms->write_latch);
//fprintf(stderr, "Processed write data: %02X\n", tms->write_latch);
#endif
stream_update(tms->stream);
tms5220_data_write(tms, tms->write_latch);
@ -1525,7 +1531,9 @@ WRITE_LINE_DEVICE_HANDLER( tms5220_rsq_w )
tms->true_timing = 1;
state &= 0x01;
#ifdef DEBUG_RS_WS
logerror("/RS written with data: %d\n", state);
#endif
new_val = (tms->rs_ws & 0x01) | (state<<1);
if (new_val != tms->rs_ws)
{
@ -1622,7 +1630,9 @@ WRITE_LINE_DEVICE_HANDLER( tms5220_wsq_w )
WRITE8_DEVICE_HANDLER( tms5220_data_w )
{
tms5220_state *tms = get_safe_token(device);
#ifdef DEBUG_RS_WS
logerror("tms5220_data_w: data %02x\n", data);
#endif
if (!tms->true_timing)
{
/* bring up to date first */