diff --git a/src/mess/drivers/vt240.c b/src/mess/drivers/vt240.c
index eebf91dfd63..df4d04d91dd 100644
--- a/src/mess/drivers/vt240.c
+++ b/src/mess/drivers/vt240.c
@@ -275,16 +275,16 @@ ROM_START( vt240 )
 
 	ROM_REGION( 0x20000, "maincpu", ROMREGION_ERASEFF )
 	ROM_DEFAULT_BIOS( "vt240" )
-	ROM_SYSTEM_BIOS( 0, "vt240o", "VT240 older" )
-	ROMX_LOAD( "23-004e6-00.e22", 0x00000, 0x8000, CRC(EBA10FEF) SHA1(C0EE4D8E4EEB70066F03F3D17A7E2F2BD0B5F8AD), ROM_SKIP(1) | ROM_BIOS(1))
-	ROMX_LOAD( "23-005e6-00.e21", 0x00001, 0x8000, CRC(558D0285) SHA1(E96A49BF9D55D8AB879D9B39AA380368C5C9ADE0), ROM_SKIP(1) | ROM_BIOS(1))
-	ROMX_LOAD( "23-006e6-00.e20", 0x10000, 0x8000, CRC(79C11D82) SHA1(5A6FE5B75B6504A161F2C9B148C0FE9F19770837), ROM_SKIP(1) | ROM_BIOS(1))
-	ROMX_LOAD( "23-007e6-00.e19", 0x10001, 0x8000, CRC(D18A2AB8) SHA1(37F448A332FC50298007ED39C8BF1AB1EB6D4CAE), ROM_SKIP(1) | ROM_BIOS(1))
-	ROM_SYSTEM_BIOS( 1, "vt240", "VT240 newer" )
-	ROMX_LOAD( "23-056e6.e22", 0x00000, 0x8000, CRC(C46E13C3) SHA1(0F2801FA7483D1F97708143CD81AE0816BF9A435), ROM_SKIP(1) | ROM_BIOS(2))
-	ROMX_LOAD( "23-057e6.e21", 0x00001, 0x8000, CRC(7CE9DCE9) SHA1(5A105E5BDCA13910B3B79CC23567CE2DC36B844D), ROM_SKIP(1) | ROM_BIOS(2))
-	ROMX_LOAD( "23-058e6.e20", 0x10000, 0x8000, CRC(D2A56B90) SHA1(39CBB26134D7D8BA308DF3A93228918A5945B45F), ROM_SKIP(1) | ROM_BIOS(2))
-	ROMX_LOAD( "23-059e6.e19", 0x10001, 0x8000, CRC(F8393346) SHA1(1E28DAF1B7F2BDABC47CE2F6FA99EF038B275A29), ROM_SKIP(1) | ROM_BIOS(2))
+	ROM_SYSTEM_BIOS( 0, "vt240o", "VT240 older" ) // has "VV2211 STATUS" in rom, V2.1?
+	ROMX_LOAD( "23-006e6-00.e20", 0x00000, 0x8000, CRC(79C11D82) SHA1(5A6FE5B75B6504A161F2C9B148C0FE9F19770837), ROM_SKIP(1) | ROM_BIOS(1))
+	ROMX_LOAD( "23-004e6-00.e22", 0x00001, 0x8000, CRC(EBA10FEF) SHA1(C0EE4D8E4EEB70066F03F3D17A7E2F2BD0B5F8AD), ROM_SKIP(1) | ROM_BIOS(1))
+	ROMX_LOAD( "23-007e6-00.e19", 0x10000, 0x8000, CRC(D18A2AB8) SHA1(37F448A332FC50298007ED39C8BF1AB1EB6D4CAE), ROM_SKIP(1) | ROM_BIOS(1))
+	ROMX_LOAD( "23-005e6-00.e21", 0x10001, 0x8000, CRC(558D0285) SHA1(E96A49BF9D55D8AB879D9B39AA380368C5C9ADE0), ROM_SKIP(1) | ROM_BIOS(1))
+	ROM_SYSTEM_BIOS( 1, "vt240", "VT240 newer" ) // has "VV2222 UPDATE" in rom, V2.2?
+	ROMX_LOAD( "23-058e6.e20", 0x00000, 0x8000, CRC(D2A56B90) SHA1(39CBB26134D7D8BA308DF3A93228918A5945B45F), ROM_SKIP(1) | ROM_BIOS(2))
+	ROMX_LOAD( "23-056e6.e22", 0x00001, 0x8000, CRC(C46E13C3) SHA1(0F2801FA7483D1F97708143CD81AE0816BF9A435), ROM_SKIP(1) | ROM_BIOS(2))
+	ROMX_LOAD( "23-059e6.e19", 0x10000, 0x8000, CRC(F8393346) SHA1(1E28DAF1B7F2BDABC47CE2F6FA99EF038B275A29), ROM_SKIP(1) | ROM_BIOS(2))
+	ROMX_LOAD( "23-057e6.e21", 0x10001, 0x8000, CRC(7CE9DCE9) SHA1(5A105E5BDCA13910B3B79CC23567CE2DC36B844D), ROM_SKIP(1) | ROM_BIOS(2))
 
 	ROM_REGION( 0x1000, "proms", ROMREGION_ERASEFF )
 	ROM_LOAD( "23-351a1.e149", 0x0000, 0x0020, NO_DUMP) // 82s123; DRAM RAS/CAS Timing PROM