From 9b9c6c3ab38eac5ba632459fb2bb34d82d212fd7 Mon Sep 17 00:00:00 2001 From: cam900 Date: Mon, 2 Mar 2020 21:07:19 +0900 Subject: [PATCH] k054321.cpp : Add notes of unknown writes --- src/devices/machine/k054321.cpp | 1 + 1 file changed, 1 insertion(+) 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));