// license:BSD-3-Clause // copyright-holders:Nicola Salmoria #include "emu.h" #include "cpu/z80/z80.h" #include "includes/lsasquad.h" /*************************************************************************** main <-> sound CPU communication ***************************************************************************/ void lsasquad_state::sh_nmi_disable_w(uint8_t data) { m_soundnmi->in_w<1>(0); } void lsasquad_state::sh_nmi_enable_w(uint8_t data) { m_soundnmi->in_w<1>(1); } uint8_t lsasquad_state::lsasquad_sound_status_r() { // bit 0: message pending for sound cpu // bit 1: message pending for main cpu return (m_soundlatch->pending_r() ? 1 : 0) | (m_soundlatch2->pending_r() ? 2 : 0); } uint8_t lsasquad_state::daikaiju_sound_status_r() { // bit 0: message pending for sound cpu // bit 1: message pending for main cpu return (m_soundlatch->pending_r() ? 2 : 1); } uint8_t lsasquad_state::lsasquad_mcu_status_r() { int res = m_bmcu_port->read(); // bit 0 = when 1, mcu is ready to receive data from main cpu // bit 1 = when 0, mcu has sent data to the main cpu //logerror("%04x: mcu_status_r\n", m_maincpu->pc()); if (m_bmcu) { if (CLEAR_LINE == m_bmcu->host_semaphore_r()) res |= 0x01; if (CLEAR_LINE == m_bmcu->mcu_semaphore_r()) res |= 0x02; } return res; } uint8_t lsasquad_state::daikaiju_mcu_status_r() { int res = m_bmcu_port->read(); // bit 0 = when 1, mcu is ready to receive data from main cpu // bit 1 = when 0, mcu has sent data to the main cpu //logerror("%04x: mcu_status_r\n", m_maincpu->pc()); if (m_bmcu) { if (CLEAR_LINE == m_bmcu->host_semaphore_r()) res |= 0x01; if (CLEAR_LINE == m_bmcu->mcu_semaphore_r()) res |= 0x02; } res |= ((m_soundlatch->pending_r() & 0x02) ^ 2) << 3; //inverted flag return res; }