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author cam900 <dbtlrchl@naver.com>2019-08-25 20:32:36 +0900
committer GitHub <noreply@github.com>2019-08-25 20:32:36 +0900
commitca51b0470cc8e7b7217eb677b7ed28dde37a72ed (patch)
tree6c3c7d8bb71788666e9f2bb08e692393849e7c91
parent68a49f2c7ea4dc94f2d680d07653225152eb237e (diff)
segac2.cpp : Revert, Add notes for sound output
-rw-r--r--src/mame/drivers/segac2.cpp11
1 files changed, 8 insertions, 3 deletions
diff --git a/src/mame/drivers/segac2.cpp b/src/mame/drivers/segac2.cpp
index a6ebad597eb..13208cd5da7 100644
--- a/src/mame/drivers/segac2.cpp
+++ b/src/mame/drivers/segac2.cpp
@@ -1541,7 +1541,12 @@ WRITE_LINE_MEMBER(segac2_state::vdp_lv4irqline_callback_c2)
m_maincpu->set_input_line(4, CLEAR_LINE);
}
-
+/*
+ sound output balance (tfrceac)
+ reference : https://youtu.be/AOmeWp9qe5E
+ reference 2 : https://youtu.be/Tq8VkJYmij8
+ reference 3: https://youtu.be/VId_HWdNuyA
+*/
void segac2_state::segac(machine_config &config)
{
/* basic machine hardware */
@@ -1572,7 +1577,7 @@ void segac2_state::segac(machine_config &config)
m_vdp->lv4_irq().set(FUNC(segac2_state::vdp_lv4irqline_callback_c2));
m_vdp->set_alt_timing(1);
m_vdp->set_screen("megadriv");
- m_vdp->add_route(ALL_OUTPUTS, "mono", 0.80);
+ m_vdp->add_route(ALL_OUTPUTS, "mono", 0.50);
TIMER(config, "scantimer").configure_scanline("gen_vdp", FUNC(sega315_5313_device::megadriv_scanline_timer_callback_alt_timing), "megadriv", 0, 1);
@@ -1593,7 +1598,7 @@ void segac2_state::segac(machine_config &config)
ym3438_device &ymsnd(YM3438(config, "ymsnd", XL2_CLOCK/7));
ymsnd.irq_handler().set(FUNC(segac2_state::segac2_irq2_interrupt));
- ymsnd.add_route(0, "mono", 1.00);
+ ymsnd.add_route(0, "mono", 0.50);
/* right channel not connected */
}