diff --git a/src/mame/drivers/namcos12.cpp b/src/mame/drivers/namcos12.cpp
index c35f594f6c8..3e847b5fae3 100644
--- a/src/mame/drivers/namcos12.cpp
+++ b/src/mame/drivers/namcos12.cpp
@@ -2695,6 +2695,17 @@ ROM_START( tekken3 )
 	ROM_REGION( 0x1000000, "c352", 0 ) /* samples */
 	ROM_LOAD( "tet1wave0.5",         0x0000000, 0x400000, CRC(77ba7975) SHA1(fe9434dcf0fb232c85efaaae1b4b13d36099620a) )
 	ROM_LOAD( "tet1wave1.4",         0x0400000, 0x400000, CRC(ffeba79f) SHA1(941412bbe9d0305d9a23c224c1bb774c4321f6df) )
+
+	// Namco Cyber Lead cabinet JVS I/O and LED display controller
+	ROM_REGION(0x40000, "cabinet_io", 0)
+	// JVS I/O board (namco ltd.;I/O CYBER LEAD;Ver1.03;JPN,LED-0100)
+	// labels: CL1 I/OB, I/O LED (I/O) PCB
+	// ICs: Namco C77 H8/???? MCU, Atmel AT29C020 256k x8 FlashROM, NEC N341256 32k x8 SRAM, 14.7MHz Xtal, Altera EPM7064 labeled I/OLEDM1
+	ROM_LOAD("cl1-iob.ic5", 0x0000, 0x40000, CRC(abb90360) SHA1(d938b1e1ae596d0ab1007352f61b0b800363c762) )
+	// LED display controller, connected to above I/O
+	// labels: CL1 LEDA, I/O LED (LED) PCB
+	// ICs: same as above plus EPSON SED1351F LCD controller, 12MHz Xtal
+	ROM_LOAD("cl1-leda.ic5", 0x0000, 0x40000, CRC(43602a58) SHA1(64156ded8c43dbbe84b5d6ae13a068c8b18e8aed) )
 ROM_END
 
 ROM_START( tekken3ae )