diff --git a/src/mame/drivers/model2.cpp b/src/mame/drivers/model2.cpp
index 196a75344e9..caa20f2a83c 100644
--- a/src/mame/drivers/model2.cpp
+++ b/src/mame/drivers/model2.cpp
@@ -2531,6 +2531,9 @@ void model2o_state::model2o(machine_config &config)
 
 	NVRAM(config, "backup1", nvram_device::DEFAULT_ALL_1);
 
+	model2_timers(config);
+	model2_screen(config);
+
 	model1io_device &ioboard(SEGA_MODEL1IO(config, "ioboard", 0));
 	ioboard.set_default_bios_tag("epr14869c");
 	ioboard.read_callback().set("dpram", FUNC(mb8421_device::left_r));
@@ -2540,9 +2543,6 @@ void model2o_state::model2o(machine_config &config)
 
 	MB8421(config, "dpram", 0);
 
-	model2_timers(config);
-	model2_screen(config);
-
 	SEGAM1AUDIO(config, m_m1audio, 0);
 	m_m1audio->rxd_handler().set(m_uart, FUNC(i8251_device::write_rxd));
 
diff --git a/src/mame/layout/coco3.lay b/src/mame/layout/coco3.lay
index 5bb06a96148..24634e4ab52 100644
--- a/src/mame/layout/coco3.lay
+++ b/src/mame/layout/coco3.lay
@@ -1,12 +1,12 @@
 <?xml version="1.0"?>
 <mamelayout version="2">
 	<view name="Composite">
-		<bounds left="0" top="0" right="4" bottom="3" />
 		<screen index="0">
 			<bounds left="0" top="0" right="4" bottom="3" />
 		</screen>
+
 		<!-- workaround for MAME selecting a 2-screen view by default -->
-		<screen index="1"><bounds left="10" top="0" right="14" bottom="3" /></screen>
+		<screen index="1"><bounds left="0" top="0" right="1" bottom="1" /><color alpha="0" /></screen>
 	</view>
 
 	<view name="RGB">
diff --git a/src/mame/layout/model1io2.lay b/src/mame/layout/model1io2.lay
index 1a552d3352c..60b1d49cc97 100644
--- a/src/mame/layout/model1io2.lay
+++ b/src/mame/layout/model1io2.lay
@@ -18,12 +18,12 @@
 	</element>
 
 	<view name="Default">
-		<screen tag="ioboard:screen">
-			<bounds left="0" top="0" right="1" bottom="1" />
-		</screen>
 		<screen tag="screen">
 			<bounds left="0" top="0" right="4" bottom="3" />
 		</screen>
+
+		<!-- workaround for MAME selecting a 2-screen view by default -->
+		<screen tag="ioboard:screen"><bounds left="0" top="0" right="1" bottom="1" /><color alpha="0" /></screen>
 	</view>
 
 	<view name="Diagnostic">
diff --git a/src/mame/layout/sms1.lay b/src/mame/layout/sms1.lay
index c6988743e6f..93a8c03a3cf 100644
--- a/src/mame/layout/sms1.lay
+++ b/src/mame/layout/sms1.lay
@@ -1,14 +1,13 @@
 <?xml version="1.0"?>
 <mamelayout version="2">
 	<view name="Main Screen Standard (4:3)">
-		<bounds left="0" top="0" right="4" bottom="3" />
 		<screen index="0">
 			<bounds left="0" top="0" right="4" bottom="3" />
 		</screen>
 
 		<!-- workaround for MAME selecting a 3-screen view by default -->
-		<screen index="1"><bounds left="10" top="0" right="14" bottom="3" /></screen>
-		<screen index="2"><bounds left="10" top="0" right="14" bottom="3" /></screen>
+		<screen index="1"><bounds left="0" top="0" right="1" bottom="1" /><color alpha="0" /></screen>
+		<screen index="2"><bounds left="0" top="0" right="1" bottom="1" /><color alpha="0" /></screen>
 	</view>
 
 	<view name="SegaScope Left LCD Standard (4:3)">