diff options
Diffstat (limited to 'src/devices/bus/cpc/magicsound.cpp')
-rw-r--r-- | src/devices/bus/cpc/magicsound.cpp | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/src/devices/bus/cpc/magicsound.cpp b/src/devices/bus/cpc/magicsound.cpp index fdb0257f72c..f1a940a72c3 100644 --- a/src/devices/bus/cpc/magicsound.cpp +++ b/src/devices/bus/cpc/magicsound.cpp @@ -21,7 +21,7 @@ DEFINE_DEVICE_TYPE(AL_MAGICSOUND, al_magicsound_device, "al_magicsound", "Aleste MACHINE_CONFIG_START(al_magicsound_device::device_add_mconfig) - AM9517A(config, m_dmac, 4_MHz_XTAL); // CLK from expansion port + AM9517A(config, m_dmac, DERIVED_CLOCK(1, 1)); // CLK from expansion port // According to the schematics, the TC pin (EOP on western chips) is connected to NMI on the expansion port. // NMIs seem to occur too quickly when this is active, so either EOP is not triggered at the correct time, or // the K1810WT37 is different to the i8237/AM9517A @@ -42,19 +42,19 @@ MACHINE_CONFIG_START(al_magicsound_device::device_add_mconfig) // passes through an inverter to each CLK pin on both timers. This seems to be too fast. // Timer outputs to SAM0/1/2/3 are sample clocks for each sound channel, D/A0 is the low bit of the channel select. PIT8254(config, m_timer1, 0); - m_timer1->set_clk<0>(4_MHz_XTAL); + m_timer1->set_clk<0>(4000000); m_timer1->out_handler<0>().set(FUNC(al_magicsound_device::sam0_w)); - m_timer1->set_clk<1>(4_MHz_XTAL); + m_timer1->set_clk<1>(4000000); m_timer1->out_handler<1>().set(FUNC(al_magicsound_device::sam1_w)); - m_timer1->set_clk<2>(4_MHz_XTAL); + m_timer1->set_clk<2>(4000000); m_timer1->out_handler<2>().set(FUNC(al_magicsound_device::sam2_w)); PIT8254(config, m_timer2, 0); - m_timer2->set_clk<0>(4_MHz_XTAL); + m_timer2->set_clk<0>(4000000); m_timer2->out_handler<0>().set(FUNC(al_magicsound_device::sam3_w)); - m_timer2->set_clk<1>(4_MHz_XTAL); + m_timer2->set_clk<1>(4000000); m_timer2->out_handler<1>().set(FUNC(al_magicsound_device::da0_w)); - m_timer2->set_clk<2>(4_MHz_XTAL); + m_timer2->set_clk<2>(4000000); SPEAKER(config, "speaker").front_center(); MCFG_DEVICE_ADD("dac", DAC_8BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.5) // unknown DAC |