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8080bw: use set_constant instead (nw)

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hap 2019-05-01 21:26:01 +02:00
parent 70f022334f
commit 8cb57cc439
1 changed files with 1 additions and 1 deletions
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src/mame/drivers/8080bw.cpp
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@ -960,7 +960,7 @@ void _8080bw_state::invrvnge(machine_config &config)
// CPU E-pin connects to AY clock pin
ay8910_device &psg(AY8910(config, "psg", XTAL(4'000'000)/2));
psg.port_a_read_callback().set([this] () { return m_sound_data >> 1; });
psg.port_b_read_callback().set([] () { return 0xff; });
psg.port_b_read_callback().set_constant(0xff);
psg.add_route(ALL_OUTPUTS, "mono", 0.75);
// CPU E-pin also connects to a 4040 divider. The Q8 output goes to the CPU's NMI pin.