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author R. Belmont <rb6502@users.noreply.github.com>2020-03-02 14:56:47 -0500
committer GitHub <noreply@github.com>2020-03-02 14:56:47 -0500
commitf1e24a07849206eaa125b8556ff0b295bc8dd088 (patch)
tree773cafca53773906d6527637d6118477ee8cc592
parentef8a892525bf036fc4786df745443dd040603ccf (diff)
parent9b9c6c3ab38eac5ba632459fb2bb34d82d212fd7 (diff)
Merge pull request #6381 from cam900/patch-134
k054321.cpp : Add notes of unknown writes
-rw-r--r--src/devices/machine/k054321.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/devices/machine/k054321.cpp b/src/devices/machine/k054321.cpp
index 9a809e2d7cb..2c56cd7827d 100644
--- a/src/devices/machine/k054321.cpp
+++ b/src/devices/machine/k054321.cpp
@@ -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));