new machines marked as NOT WORKING

XaviX Tennis (XaviXPORT) [Sean Riddle, Peter Wilhelmsen]

src/mame/drivers/xavix.cpp

@@ -209,4 +209,22 @@ ROM_START( taitons1 )
 	ROM_LOAD( "taitonostalgia1.u3", 0x000000, 0x200000, CRC(25bd8c67) SHA1(a109cd2da6aa4596e3ca3abd1afce2d0001a473f) )
 ROM_END
 
+ROM_START( xavtenni )
+	ROM_REGION( 0x800000, "bios", ROMREGION_ERASE00 )
+	ROM_LOAD( "xavixtennis.bin", 0x000000, 0x800000, CRC(23a1d918) SHA1(2241c59e8ea8328013e55952ebf9060ea0a4675b) )
+ROM_END
+
+/* The 'XaviXPORT' isn't a real console, more of a TV adapter, all the actual hardware (CPU including video hw, sound hw) is in the cartridges and controllers
+   and can vary between games, see notes at top of driver.
+
+   XaviX Tennis should be a standard XaviX CPU, but at the very least makes significantly more use of custom opcodes than Taito Nostalgia 1 which only appears
+   to use the call far / return far for extended memory space.  It also seems to require some regular 6502 opcodes to be replaced with custom ones, yet Taito
+   Nostalgia appears to use them in their normal form; either there's some kind of mode switch, or XaviX Tennis is a different CPU type.
+   
+   The CPU die on XaviX Tennis is internally marked as NEC 85054-611
+
+*/
+CONS( 2004, xavtenni,  0,   0,  xavix,  xavix, xavix_state, 0, "SSD Company LTD", "XaviX Tennis (XaviXPORT)", MACHINE_IS_SKELETON )
+
+// standalone TV games
 CONS( 2006, taitons1,  0,   0,  xavix,  xavix, xavix_state, 0, "Bandai / SSD Company LTD / Taito", "Let's! TV Play Classic - Taito Nostalgia 1", MACHINE_IS_SKELETON )

src/mame/mame.lst

@@ -38909,6 +38909,7 @@ xsleenaj                        // TA-0019 (c) 1986
 
 @source:xavix.cpp
 taitons1                        //
+xavtenni						//
 
 @source:xbox.cpp
 xbox                            //