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bnstars.cpp : Fix clock related to on-board XTALs (#6002)

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* bnstars.cpp : Fix clock related to on-board XTALs

* bnstars.cpp : Add notes

* bnstars.cpp : Fix build

* bnstars.cpp : Add notes
This commit is contained in:
cam900 2019-12-03 12:08:55 +09:00 committed by Vas Crabb
parent f5f3207633
commit 321b97206d
1 changed files with 4 additions and 4 deletions
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8
src/mame/drivers/bnstars.cpp
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@ -844,13 +844,13 @@ void bnstars_state::bnstars_sound_map(address_map &map)
void bnstars_state::bnstars(machine_config &config)
{
/* basic machine hardware */
V70(config, m_maincpu, 20000000); // 20MHz
V70(config, m_maincpu, 40_MHz_XTAL/2); // 20MHz (40MHz / 2)
m_maincpu->set_addrmap(AS_PROGRAM, &bnstars_state::bnstars_map);
m_maincpu->set_irq_acknowledge_callback(FUNC(ms32_state::irq_callback));
TIMER(config, "scantimer").configure_scanline(FUNC(bnstars_state::ms32_interrupt), "lscreen", 0, 1);
Z80(config, m_audiocpu, 4000000); // Unverified; it's possibly higher than 4MHz
Z80(config, m_audiocpu, 8_MHz_XTAL); // presented on sound PCB, Verified
m_audiocpu->set_addrmap(AS_PROGRAM, &bnstars_state::bnstars_sound_map);
config.set_maximum_quantum(attotime::from_hz(60000));
@ -891,13 +891,13 @@ void bnstars_state::bnstars(machine_config &config)
GENERIC_LATCH_8(config, m_soundlatch);
m_soundlatch->data_pending_callback().set_inputline(m_audiocpu, INPUT_LINE_NMI);
ymf271_device &ymf1(YMF271(config, "ymf1", 16934400));
ymf271_device &ymf1(YMF271(config, "ymf1", 16.9344_MHz_XTAL));
ymf1.add_route(0, "lspeaker", 1.0);
ymf1.add_route(1, "rspeaker", 1.0);
// ymf1.add_route(2, "lspeaker", 1.0); Output 2/3 not used?
// ymf1.add_route(3, "rspeaker", 1.0);
ymf271_device &ymf2(YMF271(config, "ymf2", 16934400));
ymf271_device &ymf2(YMF271(config, "ymf2", 16.9344_MHz_XTAL));
ymf2.add_route(0, "lspeaker", 1.0);
ymf2.add_route(1, "rspeaker", 1.0);
// ymf2.add_route(2, "lspeaker", 1.0); Output 2/3 not used?