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tms5110.c: implement output and read bit commands. [Lord Nightmare]

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This commit is contained in:
Lord-Nightmare 2014-12-19 13:11:28 -05:00
parent 09ec9d6006
commit d46d881e80
2 changed files with 59 additions and 24 deletions
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81
src/emu/sound/tms5110.c
View File

@ -79,9 +79,18 @@
/* States for CTL */
#define CTL_STATE_INPUT (0)
#define CTL_STATE_OUTPUT (1)
#define CTL_STATE_NEXT_OUTPUT (2)
// ctl bus is input to tms51xx
#define CTL_STATE_INPUT (0)
// ctl bus is outputting a test talk command on CTL1(bit 0)
#define CTL_STATE_TTALK_OUTPUT (1)
// ctl bus is switching direction, next will be above
#define CTL_STATE_NEXT_TTALK_OUTPUT (2)
// ctl bus is outputting a read nybble 'output' command on CTL1,2,4,8 (bits 0-3)
#define CTL_STATE_OUTPUT (3)
// ctl bus is switching direction, next will be above
#define CTL_STATE_NEXT_OUTPUT (4)
/* Pull in the ROM tables */
#include "tms5110r.inc"
@ -125,18 +134,18 @@ void tms5110_device::new_int_write(UINT8 rc, UINT8 m0, UINT8 m1, UINT8 addr)
void tms5110_device::new_int_write_addr(UINT8 addr)
{
new_int_write(1, 0, 1, addr);
new_int_write(0, 0, 1, addr);
new_int_write(1, 0, 0, addr);
new_int_write(0, 0, 0, addr);
new_int_write(1, 0, 1, addr); // romclk 1, m0 0, m1 1, addr bus nybble = xxxx
new_int_write(0, 0, 1, addr); // romclk 0, m0 0, m1 1, addr bus nybble = xxxx
new_int_write(1, 0, 0, addr); // romclk 1, m0 0, m1 0, addr bus nybble = xxxx
new_int_write(0, 0, 0, addr); // romclk 0, m0 0, m1 0, addr bus nybble = xxxx
}
UINT8 tms5110_device::new_int_read()
{
new_int_write(1, 1, 0, 0);
new_int_write(0, 1, 0, 0);
new_int_write(1, 0, 0, 0);
new_int_write(0, 0, 0, 0);
new_int_write(1, 1, 0, 0); // romclk 1, m0 1, m1 0, addr bus nybble = 0/open bus
new_int_write(0, 1, 0, 0); // romclk 0, m0 1, m1 0, addr bus nybble = 0/open bus
new_int_write(1, 0, 0, 0); // romclk 1, m0 0, m1 0, addr bus nybble = 0/open bus
new_int_write(0, 0, 0, 0); // romclk 0, m0 0, m1 0, addr bus nybble = 0/open bus
if (!m_data_cb.isnull())
return m_data_cb();
return 0;
@ -179,6 +188,7 @@ void tms5110_device::register_for_save_states()
save_item(NAME(m_address));
save_item(NAME(m_schedule_dummy_read));
save_item(NAME(m_addr_bit));
save_item(NAME(m_CTL_buffer));
save_item(NAME(m_x));
@ -587,6 +597,12 @@ void tms5110_device::PDC_set(int data)
case CTL_STATE_INPUT:
/* continue */
break;
case CTL_STATE_NEXT_TTALK_OUTPUT:
m_state = CTL_STATE_TTALK_OUTPUT;
return;
case CTL_STATE_TTALK_OUTPUT:
m_state = CTL_STATE_INPUT;
return;
case CTL_STATE_NEXT_OUTPUT:
m_state = CTL_STATE_OUTPUT;
return;
@ -607,30 +623,42 @@ void tms5110_device::PDC_set(int data)
{
switch (m_CTL_pins & 0xe) /*CTL1 - don't care*/
{
case TMS5110_CMD_SPEAK:
perform_dummy_read();
m_speaking_now = 1;
//should FIFO be cleared now ?????
break;
case TMS5110_CMD_RESET:
perform_dummy_read();
reset();
break;
case TMS5110_CMD_LOAD_ADDRESS:
m_next_is_address = TRUE;
break;
case TMS5110_CMD_OUTPUT:
m_state = CTL_STATE_NEXT_OUTPUT;
break;
case TMS5110_CMD_SPKSLOW:
perform_dummy_read();
m_speaking_now = 1;
//should FIFO be cleared now ????? there is no fifo! the fifo is a lie!
break;
case TMS5110_CMD_READ_BIT:
if (m_schedule_dummy_read)
perform_dummy_read();
else
{
request_bits(1);
m_CTL_pins = (m_CTL_pins & 0x0E) | extract_bits(1);
//m_CTL_pins = (m_CTL_pins & 0x0E) | extract_bits(1);
m_CTL_buffer <<= 1;
m_CTL_buffer |= extract_bits(1);
m_CTL_buffer &= 0xF;
}
break;
case TMS5110_CMD_LOAD_ADDRESS:
m_next_is_address = TRUE;
case TMS5110_CMD_SPEAK:
perform_dummy_read();
m_speaking_now = 1;
//should FIFO be cleared now ????? there is no fifo! the fifo is a lie!
break;
case TMS5110_CMD_READ_BRANCH:
@ -644,7 +672,7 @@ void tms5110_device::PDC_set(int data)
break;
case TMS5110_CMD_TEST_TALK:
m_state = CTL_STATE_NEXT_OUTPUT;
m_state = CTL_STATE_NEXT_TTALK_OUTPUT;
break;
default:
@ -917,6 +945,7 @@ void tms5110_device::device_reset()
m_speaking_now = m_talk_status = 0;
m_CTL_pins = 0;
m_RNG = 0x1fff;
m_CTL_buffer = 0;
/* initialize the energy/pitch/k states */
m_old_energy = m_new_energy = m_current_energy = m_target_energy = 0;
@ -935,7 +964,6 @@ void tms5110_device::device_reset()
{
/* legacy interface */
m_schedule_dummy_read = TRUE;
}
else
{
@ -998,11 +1026,16 @@ READ8_MEMBER( tms5110_device::ctl_r )
{
/* bring up to date first */
m_stream->update();
if (m_state == CTL_STATE_OUTPUT)
if (m_state == CTL_STATE_TTALK_OUTPUT)
{
//if (DEBUG_5110) logerror("Status read (status=%2d)\n", m_talk_status);
return (m_talk_status << 0); /*CTL1 = still talking ? */
}
else if (m_state == CTL_STATE_OUTPUT)
{
//if (DEBUG_5110) logerror("Status read (status=%2d)\n", m_talk_status);
return (m_CTL_buffer);
}
else
{
//if (DEBUG_5110) logerror("Status read (not in output mode)\n");

2
src/emu/sound/tms5110.h
View File

@ -115,6 +115,8 @@ private:
UINT8 m_next_is_address;
UINT8 m_schedule_dummy_read;
UINT8 m_addr_bit;
/* read byte */
UINT8 m_CTL_buffer;
/* callbacks */
devcb_write_line m_m0_cb; // the M0 line