// license:BSD-3-Clause // copyright-holders:Mathis Rosenhauer /*************************************************************************** Centuri Aztarac hardware ***************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "includes/aztarac.h" uint16_t aztarac_state::sound_r() { return m_sound_status & 0x01; } void aztarac_state::sound_w(offs_t offset, uint16_t data, uint16_t mem_mask) { if (ACCESSING_BITS_0_7) { data &= 0xff; m_soundlatch->write(data); m_sound_status ^= 0x21; if (m_sound_status & 0x20) m_audiocpu->set_input_line(0, HOLD_LINE); } } uint8_t aztarac_state::snd_command_r() { m_sound_status |= 0x01; m_sound_status &= ~0x20; return m_soundlatch->read(); } uint8_t aztarac_state::snd_status_r() { return m_sound_status & ~0x01; } void aztarac_state::snd_status_w(uint8_t data) { m_sound_status &= ~0x10; } INTERRUPT_GEN_MEMBER(aztarac_state::snd_timed_irq) { m_sound_status ^= 0x10; if (m_sound_status & 0x10) device.execute().set_input_line(0,HOLD_LINE); }