From c630976e21d45e3f557ea36986444b7f2a0133d6 Mon Sep 17 00:00:00 2001
From: smf- <smf-@users.noreply.github.com>
Date: Thu, 20 Jun 2013 15:10:45 +0000
Subject: [PATCH] log unknown writes (nw)

---
 src/emu/machine/idehd.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/emu/machine/idehd.c b/src/emu/machine/idehd.c
index 7534993c64d..ef1db95b4c9 100644
--- a/src/emu/machine/idehd.c
+++ b/src/emu/machine/idehd.c
@@ -1306,6 +1306,10 @@ WRITE16_MEMBER( ata_mass_storage_device::write_cs0 )
 					}
 				}
 				break;
+
+			default:
+				logerror("%s:unknown IDE cs0 write at %03X = %04x, mem_mask=%d\n", machine().describe_context(), offset, data, mem_mask);
+				break;
 		}
 	}
 }
@@ -1343,6 +1347,10 @@ WRITE16_MEMBER( ata_mass_storage_device::write_cs1 )
 					}
 				}
 				break;
+
+			default:
+				logerror("%s:unknown IDE cs1 write at %03X = %04x, mem_mask=%d\n", machine().describe_context(), offset, data, mem_mask);
+				break;
 		}
 	}
 }