diff --git a/src/mame/drivers/model1.c b/src/mame/drivers/model1.c
index 3c38c68e5d6..8ff63c3962d 100644
--- a/src/mame/drivers/model1.c
+++ b/src/mame/drivers/model1.c
@@ -1216,7 +1216,7 @@ INPUT_PORTS_END
 
 ROM_START( vf )
 
-	ROM_REGION( 0x1400000, "main", 0 ) /* v60 code */
+	ROM_REGION( 0x2000000, "main", ROMREGION_ERASEFF ) /* v60 code */
 	ROM_LOAD16_BYTE( "epr-16082.14", 0x200000, 0x80000, CRC(b23f22ee) SHA1(9fd5b5a5974703a60a54de3d2bce4301bfc0e533) )
 	ROM_LOAD16_BYTE( "epr-16083.15", 0x200001, 0x80000, CRC(d12c77f8) SHA1(b4aeba8d5f1ab4aec024391407a2cb58ce2e94b0) )
 
@@ -1259,7 +1259,7 @@ ROM_END
 ROM_START( vr )
 	MODEL1_CPU_BOARD
 
-	ROM_REGION( 0x1400000, "main", 0 ) /* v60 code */
+	ROM_REGION( 0x2000000, "main", ROMREGION_ERASEFF ) /* v60 code */
 	ROM_LOAD16_BYTE( "epr-14882.14", 0x200000, 0x80000, CRC(547D75AD) SHA1(a57c11966886c37de1d7df131ad60457669231dd) )
 	ROM_LOAD16_BYTE( "epr-14883.15", 0x200001, 0x80000, CRC(6BFAD8B1) SHA1(c1f780e456b405abd42d92f4e03e40aad88f8c22) )
 
@@ -1309,7 +1309,7 @@ ROM_END
 ROM_START( vformula )
 	MODEL1_CPU_BOARD
 
-	ROM_REGION( 0x1400000, "main", 0 ) /* v60 code */
+	ROM_REGION( 0x2000000, "main", ROMREGION_ERASEFF ) /* v60 code */
 	ROM_LOAD16_BYTE( "epr15638.14", 0x200000, 0x80000, CRC(b9db21a2) SHA1(db58c047977f5fc37f278afe7159a78e3fa6c015) )
 	ROM_LOAD16_BYTE( "epr15639.15", 0x200001, 0x80000, CRC(4c3796f5) SHA1(1bf312a4999a15fbc5d194627f9c0ad9dbc1f2c0) )
 
@@ -1361,7 +1361,7 @@ ROM_END
 
 
 ROM_START( swa )
-	ROM_REGION( 0x1000000, "main", 0 ) /* v60 code */
+	ROM_REGION( 0x2000000, "main", ROMREGION_ERASEFF ) /* v60 code */
 	ROM_LOAD16_BYTE( "epr-16468.14", 0x200000, 0x80000, CRC(681d03c0) SHA1(4d21e26ce211466d429b84bca69a8147ff31ec6c) )
 	ROM_LOAD16_BYTE( "epr-16469.15", 0x200001, 0x80000, CRC(6f281f7c) SHA1(6a9179e48d14838bb2a1a3f63fdd3a68ed009e03) )
 
@@ -1407,7 +1407,7 @@ ROM_START( swa )
 ROM_END
 
 ROM_START( wingwar )
-	ROM_REGION( 0x1300000, "main", 0 ) /* v60 code */
+	ROM_REGION( 0x2000000, "main", ROMREGION_ERASEFF ) /* v60 code */
 	ROM_LOAD16_BYTE( "epr-16729.14", 0x200000, 0x80000, CRC(7edec2cc) SHA1(3e423a868ca7c8475fbb5bc1a10526e69d94d865) )
 	ROM_LOAD16_BYTE( "epr-16730.15", 0x200001, 0x80000, CRC(bab24dee) SHA1(26c95139c1aa7f34b6a5cce39e5bd1dd2ef0dd49) )
 
@@ -1454,7 +1454,7 @@ ROM_START( wingwar )
 ROM_END
 
 ROM_START( wingwara )
-	ROM_REGION( 0x1300000, "main", 0 ) /* v60 code */
+	ROM_REGION( 0x2000000, "main", ROMREGION_ERASEFF ) /* v60 code */
 	ROM_LOAD16_BYTE( "epr-16729.14", 0x200000, 0x80000, CRC(7edec2cc) SHA1(3e423a868ca7c8475fbb5bc1a10526e69d94d865) )
 	ROM_LOAD16_BYTE( "epr-16730.15", 0x200001, 0x80000, CRC(bab24dee) SHA1(26c95139c1aa7f34b6a5cce39e5bd1dd2ef0dd49) )