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k054321.cpp : Add notes of unknown writes

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cam900 2020-03-02 21:07:19 +09:00 committed by GitHub
parent 635f469c7d
commit 9b9c6c3ab3
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src/devices/machine/k054321.cpp
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@ -40,6 +40,7 @@ DEFINE_DEVICE_TYPE(K054321, k054321_device, "k054321", "K054321 Maincpu-Soundcpu
void k054321_device::main_map(address_map &map)
{
map(0x0, 0x0).w(FUNC(k054321_device::active_w));
//map(0x1, 0x1) Used but unknown, xexex(0xd6002) writes 0x0000
map(0x2, 0x2).w(FUNC(k054321_device::volume_reset_w));
map(0x3, 0x3).w(FUNC(k054321_device::volume_up_w));
map(0x4, 0x4).w(FUNC(k054321_device::dummy_w));