// license:BSD-3-Clause // copyright-holders:Ernesto Corvi #include "emu.h" #include "cpu/m6809/konami.h" #include "machine/eepromser.h" #include "includes/simpsons.h" /*************************************************************************** EEPROM ***************************************************************************/ void simpsons_state::simpsons_eeprom_w(uint8_t data) { if (data == 0xff) return; ioport("EEPROMOUT")->write(data, 0xff); simpsons_video_banking(data & 0x03); m_firq_enabled = data & 0x04; if (!m_firq_enabled) m_maincpu->set_input_line(KONAMI_FIRQ_LINE, CLEAR_LINE); } /*************************************************************************** Coin Counters, Sound Interface ***************************************************************************/ void simpsons_state::simpsons_coin_counter_w(uint8_t data) { /* bit 0,1 coin counters */ machine().bookkeeping().coin_counter_w(0, data & 0x01); machine().bookkeeping().coin_counter_w(1, data & 0x02); /* bit 2 selects mono or stereo sound */ /* bit 3 = enable char ROM reading through the video RAM */ m_k052109->set_rmrd_line((data & 0x08) ? ASSERT_LINE : CLEAR_LINE); /* bit 4 = INIT (unknown) */ /* bit 5 = enable sprite ROM reading */ m_k053246->k053246_set_objcha_line((~data & 0x20) ? ASSERT_LINE : CLEAR_LINE); } uint8_t simpsons_state::simpsons_sound_interrupt_r() { m_audiocpu->set_input_line_and_vector(0, HOLD_LINE, 0xff ); // Z80 return 0x00; } /*************************************************************************** Banking, initialization ***************************************************************************/ void simpsons_state::banking_callback(u8 data) { membank("bank1")->set_entry(data & 0x3f); } void simpsons_state::machine_start() { m_spriteram = make_unique_clear(0x1000 / 2); membank("bank1")->configure_entries(0, 64, memregion("maincpu")->base(), 0x2000); membank("bank2")->configure_entries(0, 2, memregion("audiocpu")->base() + 0x10000, 0); membank("bank2")->configure_entries(2, 6, memregion("audiocpu")->base() + 0x10000, 0x4000); save_item(NAME(m_firq_enabled)); save_item(NAME(m_nmi_enabled)); save_item(NAME(m_sprite_colorbase)); save_item(NAME(m_layer_colorbase)); save_item(NAME(m_layerpri)); save_pointer(NAME(m_spriteram), 0x1000 / 2); } void simpsons_state::machine_reset() { for (int i = 0; i < 3; i++) { m_layerpri[i] = 0; m_layer_colorbase[i] = 0; } m_sprite_colorbase = 0; m_firq_enabled = 0; m_nmi_enabled = 0; /* init the default banks */ membank("bank1")->set_entry(0); membank("bank2")->set_entry(0); simpsons_video_banking(0); }