ROM_START( arkatour ) // Tournament version
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "a75-27.ic17", 0x0000, 0x8000, CRC(e3b8faf5) SHA1(4c09478fa41881fa89ee6afb676aeb780f17ac2e) )
ROM_LOAD( "a75-28.ic16", 0x8000, 0x8000, CRC(326aca4d) SHA1(5a194b7a0361236d471b24905dc6434372f81252) ) // region byte is 0x92
ROM_REGION( 0x0800, "mcu:mcu", 0 ) /* 2k for the microcontroller */
ROM_LOAD( "a75__32.ic14", 0x0000, 0x0800, CRC(8c20d15c) SHA1(912996bf08de318e19dc420261f554a09dacd443) ) // verified authentic, dumped from actual MCU
ROM_REGION( 0x18000, "gfx1", 0 )
ROM_LOAD( "a75-29.ic64", 0x00000, 0x8000, CRC(5ddea3cf) SHA1(58f16515898b7cc2697bf7663a60d9ca0db6da95) )
ROM_LOAD( "a75-30.ic63", 0x08000, 0x8000, CRC(5fcf2e85) SHA1(f721f0afb0550cc64bff26681856a7576398d9b5) )
ROM_LOAD( "a75-31.ic62", 0x10000, 0x8000, CRC(7b76b192) SHA1(a68aa08717646a6c322cf3455df07f50df9e9f33) )
ROM_REGION( 0x0600, "proms", 0 ) /* BPROMs are silkscreened as 7621, actual BPROMs used are MMI 6306-1N */
ROM_LOAD( "a75-33.ic24", 0x0000, 0x0200, CRC(b4bf3c81) SHA1(519188937ac9728c653fabac877e37dc43c3f71a) ) /* red component */
ROM_LOAD( "a75-34.ic23", 0x0200, 0x0200, CRC(de85a803) SHA1(325214995996de36a0470fbfc00e4e393c0b17ad) ) /* green component */
ROM_LOAD( "a75-35.ic22", 0x0400, 0x0200, CRC(38acfd3b) SHA1(2841e9db047aa039eff8567a518b6250b355507b) ) /* blue component */
ROM_END