ES5506: and more optimization...
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tildearrow
parent
c0190b81cb
commit
0533f10ef4
5 changed files with 31 additions and 275 deletions
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@ -13,180 +13,6 @@
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// DO NOT USE THIS ONE!
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void es5506_core::tick()
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{
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// CLKIN
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if (m_clkin.tick())
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{
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// BCLK
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if (m_clkin.edge().changed() && (!m_mode.bclk_en())) // BCLK is freely running clock
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{
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if (m_bclk.tick())
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{
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m_intf.bclk(m_bclk.current_edge());
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// Serial output
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if (!m_mode.lrclk_en())
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{
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if (m_bclk.falling_edge())
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{
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// LRCLK
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if (m_lrclk.tick())
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{
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m_intf.lrclk(m_lrclk.current_edge());
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if (m_lrclk.rising_edge())
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{
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m_w_st_curr = m_w_st;
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m_w_end_curr = m_w_end;
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}
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if (m_lrclk.falling_edge())
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{ // update width
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m_lrclk.set_width_latch(m_lr_end);
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}
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}
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}
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}
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// WCLK
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if (!m_mode.wclk_en())
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{
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if (!m_mode.lrclk_en())
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{
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if (m_lrclk.edge().changed())
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{
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m_wclk = 0;
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}
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}
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if (m_bclk.falling_edge())
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{
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if (m_wclk == m_w_st_curr)
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{
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m_intf.wclk(true);
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if (m_lrclk.current_edge())
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{
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for (int i = 0; i < 6; i++)
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{
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// copy output
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m_output[i].copy_output(m_output_temp[i]);
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// clamp to 20 bit (upper 3 bits are
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// overflow guard bits)
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m_output_latch[i].clamp20(m_ch[i]);
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m_output_temp[i].reset();
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m_output_latch[i].clamp20();
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// set signed
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if (m_output_latch[i].left() < 0)
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{
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m_output_temp[i].set_left(-1);
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}
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if (m_output_latch[i].right() < 0)
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{
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m_output_temp[i].set_right(-1);
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}
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}
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}
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m_wclk_lr = m_lrclk.current_edge();
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m_output_bit = 20;
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}
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if (m_wclk < m_w_end_curr)
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{
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s8 output_bit = --m_output_bit;
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if (m_output_bit >= 0)
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{
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for (int i = 0; i < 6; i++)
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{
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if (m_wclk_lr)
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{
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// Right output
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m_output_temp[i].serial_in(
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m_wclk_lr,
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bitfield(m_output_latch[i].right(), output_bit));
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}
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else
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{
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// Left output
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m_output_temp[i].serial_in(
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m_wclk_lr,
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bitfield(m_output_latch[i].left(), output_bit));
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}
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}
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}
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}
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if (m_wclk == m_w_end_curr)
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{
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m_intf.wclk(false);
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}
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m_wclk++;
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}
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}
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}
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}
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// /CAS, E
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if (m_clkin.falling_edge()) // falling edge triggers /CAS, E clock
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{
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// /CAS
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if (m_cas.tick())
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{
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// single OTTO master mode, /CAS high, E low: get sample address
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// single OTTO early mode, /CAS falling, E high: get sample
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// address
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if (m_cas.falling_edge())
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{
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if (!m_e.current_edge())
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{
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// single OTTO master mode, /CAS low, E low: fetch
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// sample
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if (m_mode.master())
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{
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m_voice[m_voice_cycle].fetch(m_voice_fetch);
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}
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}
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else if (m_e.current_edge())
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{
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// dual OTTO slave mode, /CAS low, E high: fetch sample
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if (m_mode.dual() && (!m_mode.master()))
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{ // Dual OTTO, slave mode
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m_voice[m_voice_cycle].fetch(m_voice_fetch);
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}
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}
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}
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}
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// E
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if (m_e.tick())
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{
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m_intf.e_pin(m_e.current_edge());
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if (m_e.rising_edge())
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{
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m_host_intf.update_strobe();
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}
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else if (m_e.falling_edge())
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{
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m_host_intf.clear_host_access();
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voice_tick();
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}
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if (m_e.current_edge()) // Host interface
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{
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if (m_host_intf.m_host_access)
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{
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if (m_host_intf.m_rw && (m_e.cycle() == 0)) // Read
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{
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m_hd = read(m_ha);
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m_host_intf.clear_host_access();
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}
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else if ((!m_host_intf.m_rw) && (m_e.cycle() == 2))
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{ // Write
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write(m_ha, m_hd);
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}
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}
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}
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else if (!m_e.current_edge())
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{
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if (m_e.cycle() == 2)
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{
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// reset host access state
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m_hd = 0;
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m_host_intf.clear_strobe();
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}
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}
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}
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}
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}
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}
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// less cycle accurate, but less CPU heavy routine
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@ -195,7 +21,7 @@ void es5506_core::tick_perf()
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// output
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if (((!m_mode.lrclk_en()) && (!m_mode.bclk_en()) && (!m_mode.wclk_en())) && (m_w_st < m_w_end))
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{
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const int output_bits = (20 - (m_w_end - m_w_st)) * 2;
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const int output_bits = (20 - (m_w_end - m_w_st));
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if (output_bits < 20)
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{
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for (int c = 0; c < 6; c++)
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@ -218,55 +44,37 @@ void es5506_core::tick_perf()
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}
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}
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bool bounce=m_voice_end;
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// update
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if (bounce) {
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// falling edge
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m_e.edge().set(false);
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m_intf.e_pin(false);
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m_host_intf.clear_host_access();
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m_host_intf.clear_strobe();
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}
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m_voice[m_voice_cycle].fetch(0);
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voice_tick();
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if (bounce) {
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voice_tick();
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// rising edge
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m_e.edge().set(true);
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m_intf.e_pin(true);
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m_host_intf.update_strobe();
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}
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}
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void es5506_core::voice_tick()
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{
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// Voice updates every 2 E clock cycle (or 4 BCLK clock cycle)
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// Update voice
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m_voice[m_voice_cycle].tick(m_voice_cycle);
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for (int i=0; i<VGS_CLAMP(m_active,4,31); i++) {
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m_voice[i].fetch(0);
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m_voice[i].tick(i);
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}
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// Refresh output
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if ((++m_voice_cycle) > VGS_CLAMP(m_active, 4, 31)) // 5 ~ 32 voices
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m_voice_end = true;
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m_voice_cycle = 0;
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for (int i=0; i<6; i++)
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{
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m_voice_end = true;
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m_voice_cycle = 0;
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for (int i=0; i<6; i++)
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{
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m_ch[i].reset();
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}
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for (int i=0; i<32; i++)
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{
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const u8 ca = m_voice[i].cr().ca()&7;
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if (ca < 6)
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{
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m_ch[ca] += m_voice[i].ch();
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}
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m_voice[i].ch().reset();
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}
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m_ch[i].reset();
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}
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else
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for (int i=0; i<32; i++)
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{
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m_voice_end = false;
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const u8 ca = m_voice[i].cr().ca()&7;
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if (ca < 6)
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{
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m_ch[ca] += m_voice[i].ch();
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}
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m_voice[i].ch().reset();
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}
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}
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@ -302,8 +110,8 @@ void es5506_core::voice_t::tick(u8 voice)
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if (m_alu.busy())
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{
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// Send to output
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m_output[0] = m_mute ? 0 : volume_calc(m_lvol, sign_ext<s32>(m_filter.o4_1(), 16));
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m_output[1] = m_mute ? 0 : volume_calc(m_rvol, sign_ext<s32>(m_filter.o4_1(), 16));
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m_output[0] = m_mute ? 0 : volume_calc(m_lvol, (short)m_filter.o4_1());
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m_output[1] = m_mute ? 0 : volume_calc(m_rvol, (short)m_filter.o4_1());
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m_ch.set_left(m_output[0]);
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m_ch.set_right(m_output[1]);
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@ -346,7 +154,7 @@ void es5506_core::voice_t::tick(u8 voice)
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m_filtcount = bitfield(m_filtcount + 1, 0, 3);
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// Update IRQ
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m_alu.irq_exec(m_host.m_intf, m_host.m_irqv, voice);
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//m_alu.irq_exec(m_host.m_intf, m_host.m_irqv, voice);
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}
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// Compressed format
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@ -426,36 +234,16 @@ void es5506_core::voice_t::reset()
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// Accessors
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u8 es5506_core::host_r(u8 address)
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{
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if (!m_host_intf.m_host_access)
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{
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m_ha = address;
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if (m_e.rising_edge())
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{ // update directly
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m_hd = read(m_ha, true);
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}
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else
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{
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m_host_intf.set_strobe(true);
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}
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}
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return m_hd;
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}
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void es5506_core::host_w(u8 address, u8 data)
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{
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if (!m_host_intf.m_host_access)
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{
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m_ha = address;
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m_hd = data;
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if (m_e.rising_edge())
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{ // update directly
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write(m_ha, m_hd);
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}
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else
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{
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m_host_intf.set_strobe(false);
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}
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}
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}
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u8 es5506_core::read(u8 address, bool cpu_access)
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@ -41,11 +41,6 @@ bool es550x_shared_core::es550x_voice_t::es550x_alu_t::tick()
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void es550x_shared_core::es550x_voice_t::es550x_alu_t::loop_exec()
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{
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if (m_cr.irqe())
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{ // Set IRQ
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m_cr.set_irq(true);
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}
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if (m_cr.dir()) // Reverse playback
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{
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if (m_cr.lpe()) // Loop enable
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