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nn71003: RB recognized a SPI interface

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This commit is contained in:
Olivier Galibert 2023-05-27 12:07:35 +02:00
parent 8cdf1257c4
commit 0f03208400
3 changed files with 36 additions and 35 deletions
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48
src/devices/sound/nn71003f.cpp
View File

@ -14,54 +14,54 @@ DEFINE_DEVICE_TYPE(NN71003F, nn71003f_device, "nn71003f", "NN71003F mpeg audio c
nn71003f_device::nn71003f_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, NN71003F, tag, owner, clock),
device_sound_interface(mconfig, *this),
m_irq_cb(*this)
m_miso(*this)
{
}
void nn71003f_device::device_start()
{
m_irq_cb.resolve_safe();
save_item(NAME(m_cmd_atn));
save_item(NAME(m_cmd_clk));
save_item(NAME(m_cmd_dat));
m_miso.resolve_safe();
save_item(NAME(m_ss));
save_item(NAME(m_sclk));
save_item(NAME(m_mosi));
}
void nn71003f_device::device_reset()
{
m_cmd_atn = 0;
m_cmd_clk = 0;
m_cmd_dat = 0;
m_ss = 0;
m_sclk = 0;
m_mosi = 0;
}
void nn71003f_device::cmd_atn_w(int state)
void nn71003f_device::ss_w(int state)
{
if(state == m_cmd_atn)
if(state == m_ss)
return;
m_cmd_atn = state;
if(!m_cmd_atn)
m_cmd_cnt = 0;
m_ss = state;
if(!m_ss)
m_spi_cnt = 0;
}
void nn71003f_device::cmd_clk_w(int state)
void nn71003f_device::sclk_w(int state)
{
if(state == m_cmd_clk)
if(state == m_sclk)
return;
m_cmd_clk = state;
if(!m_cmd_clk)
m_sclk = state;
if(!m_sclk)
return;
m_cmd_byte = (m_cmd_byte << 1) | m_cmd_dat;
m_cmd_cnt ++;
if(m_cmd_cnt & 7)
m_spi_byte = (m_spi_byte << 1) | m_mosi;
m_spi_cnt ++;
if(m_spi_cnt & 7)
return;
logerror("CMD %x: %02x\n", m_cmd_cnt >> 3, m_cmd_byte);
logerror("SPI %x: %02x\n", m_spi_cnt >> 3, m_spi_byte);
}
void nn71003f_device::cmd_dat_w(int state)
void nn71003f_device::mosi_w(int state)
{
if(state == m_cmd_dat)
if(state == m_mosi)
return;
m_cmd_dat = state;
m_mosi = state;
}
void nn71003f_device::frm_w(int state)

17
src/devices/sound/nn71003f.h
View File

@ -15,15 +15,16 @@ class nn71003f_device : public device_t, public device_sound_interface
public:
nn71003f_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
// Serial audio interface
void frm_w(int state);
void dat_w(int state);
void clk_w(int state);
void cmd_atn_w(int state);
void cmd_clk_w(int state);
void cmd_dat_w(int state);
auto irq_cb() { return m_irq_cb.bind(); }
// Slave SPI interface
void ss_w(int state);
void sclk_w(int state);
void mosi_w(int state);
auto miso_cb() { return m_miso.bind(); }
protected:
virtual void device_start() override;
@ -31,9 +32,9 @@ protected:
virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;
private:
devcb_write_line m_irq_cb;
u8 m_cmd_byte, m_cmd_cnt;
int m_cmd_atn, m_cmd_clk, m_cmd_dat;
devcb_write_line m_miso;
u8 m_spi_byte, m_spi_cnt;
int m_ss, m_sclk, m_mosi;
};
DECLARE_DEVICE_TYPE(NN71003F, nn71003f_device)

6
src/mame/nichibutsu/hrdvd.cpp
View File

@ -133,9 +133,9 @@ void hrdvd_state::pb_w(uint16_t data)
{
u8 delta = data ^ m_pb;
m_pb = (m_pb & 0xc0) | (data & 0x3f);
m_mpega->cmd_atn_w(BIT(m_pb, 0));
m_mpega->cmd_clk_w(BIT(m_pb, 1));
m_mpega->cmd_dat_w(BIT(m_pb, 2));
m_mpega->ss_w(BIT(m_pb, 0));
m_mpega->sclk_w(BIT(m_pb, 1));
m_mpega->mosi_w(BIT(m_pb, 2));
if(delta & 0x38)
logerror("pb %02x\n", data);
}