diff --git a/src/emu/bus/isa/mc1502_fdc.c b/src/emu/bus/isa/mc1502_fdc.c
index b94360733c6..a24e487e43c 100644
--- a/src/emu/bus/isa/mc1502_fdc.c
+++ b/src/emu/bus/isa/mc1502_fdc.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:XXX
+// copyright-holders:Sergey Svishchev
 /**********************************************************************
 
     Electronika MC 1502 FDC device
diff --git a/src/emu/bus/isa/mc1502_fdc.h b/src/emu/bus/isa/mc1502_fdc.h
index 3cfc3ced3c3..344b4df9ff0 100644
--- a/src/emu/bus/isa/mc1502_fdc.h
+++ b/src/emu/bus/isa/mc1502_fdc.h
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:XXX
+// copyright-holders:Sergey Svishchev
 /**********************************************************************
 
     Electronika MC 1502 FDC device
diff --git a/src/emu/bus/isa/mc1502_rom.c b/src/emu/bus/isa/mc1502_rom.c
index 2dd85f50898..9a12c5ec712 100644
--- a/src/emu/bus/isa/mc1502_rom.c
+++ b/src/emu/bus/isa/mc1502_rom.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:XXX
+// copyright-holders:Sergey Svishchev
 /**********************************************************************
 
     MC-1502 ROM cartridge device
diff --git a/src/emu/bus/isa/mc1502_rom.h b/src/emu/bus/isa/mc1502_rom.h
index 9d5bd584ac0..9e426d93ab3 100644
--- a/src/emu/bus/isa/mc1502_rom.h
+++ b/src/emu/bus/isa/mc1502_rom.h
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:XXX
+// copyright-holders:Sergey Svishchev
 /**********************************************************************
 
     MC-1502 ROM cartridge device
diff --git a/src/emu/bus/isa/p1_fdc.c b/src/emu/bus/isa/p1_fdc.c
index c2b10375cb8..80e2ebb77c9 100644
--- a/src/emu/bus/isa/p1_fdc.c
+++ b/src/emu/bus/isa/p1_fdc.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:XXX
+// copyright-holders:Sergey Svishchev
 /**********************************************************************
 
     Poisk-1 FDC device (model B504)
diff --git a/src/emu/bus/isa/p1_fdc.h b/src/emu/bus/isa/p1_fdc.h
index c6d7a416ce1..810f7e4cba0 100644
--- a/src/emu/bus/isa/p1_fdc.h
+++ b/src/emu/bus/isa/p1_fdc.h
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:XXX
+// copyright-holders:Sergey Svishchev
 /**********************************************************************
 
     Poisk-1 FDC device (model B504)
diff --git a/src/emu/bus/isa/p1_hdc.c b/src/emu/bus/isa/p1_hdc.c
index 3cbf1f11039..eb8d68524eb 100644
--- a/src/emu/bus/isa/p1_hdc.c
+++ b/src/emu/bus/isa/p1_hdc.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:XXX
+// copyright-holders:Sergey Svishchev
 /**********************************************************************
 
     Poisk-1 HDC device (model B942)
diff --git a/src/emu/bus/isa/p1_hdc.h b/src/emu/bus/isa/p1_hdc.h
index ca5c9f3de0c..f1a844b5edc 100644
--- a/src/emu/bus/isa/p1_hdc.h
+++ b/src/emu/bus/isa/p1_hdc.h
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:XXX
+// copyright-holders:Sergey Svishchev
 /**********************************************************************
 
     Poisk-1 HDC device (model B942)
diff --git a/src/emu/bus/isa/p1_rom.c b/src/emu/bus/isa/p1_rom.c
index bebbcd53011..bd078972a04 100644
--- a/src/emu/bus/isa/p1_rom.c
+++ b/src/emu/bus/isa/p1_rom.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:XXX
+// copyright-holders:Sergey Svishchev
 /**********************************************************************
 
     Poisk-1 ROM cartridge device
diff --git a/src/emu/bus/isa/p1_rom.h b/src/emu/bus/isa/p1_rom.h
index 8ec16c4bc7b..7b5ddd79150 100644
--- a/src/emu/bus/isa/p1_rom.h
+++ b/src/emu/bus/isa/p1_rom.h
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:XXX
+// copyright-holders:Sergey Svishchev
 /**********************************************************************
 
     Poisk-1 ROM cartridge device
diff --git a/src/emu/bus/isa/xsu_cards.c b/src/emu/bus/isa/xsu_cards.c
index 05819a194ba..1a24062a9d1 100644
--- a/src/emu/bus/isa/xsu_cards.c
+++ b/src/emu/bus/isa/xsu_cards.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:Dirk Best
+// copyright-holders:Sergey Svishchev
 /**********************************************************************
 
     ISA bus cards for ex-USSR PC clones
diff --git a/src/emu/bus/isa/xsu_cards.h b/src/emu/bus/isa/xsu_cards.h
index ecb942411b0..8ddd30f173d 100644
--- a/src/emu/bus/isa/xsu_cards.h
+++ b/src/emu/bus/isa/xsu_cards.h
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:Dirk Best
+// copyright-holders:Sergey Svishchev
 /**********************************************************************
 
     ISA bus cards for ex-USSR PC clones