This is my first post. I'm learning how to use my Fluke 9010 and ran into a problem doing a CRC check on some of the ROMS. Looking in the MAME source code I found the address ranges for each ROM(see below). ROMs 304 to 305 work fine but the address appears to be out of range for ROMs 101 and 102. ROM 101 according to the source code should start at 10000-11FFF. What address should I be using? Where am I going wrong here?? ROM_START( ccastles ) 513 ROM_REGION( 0x14000, "maincpu", 0 ) 514 ROM_LOAD( "136022-403.1k", 0x0a000, 0x2000, CRC(81471ae5) SHA1(8ec13b48119ecf8fe85207403c0a0de5240cded4) ) 515 ROM_LOAD( "136022-404.1l", 0x0c000, 0x2000, CRC(820daf29) SHA1(a2cff00e9ddce201344692b75038431e4241fedd) ) 516 ROM_LOAD( "136022-405.1n", 0x0e000, 0x2000, CRC(4befc296) SHA1(2e789a32903808014e9d5f3021d7eff57c3e2212) ) 517 ROM_LOAD( "136022-102.1h", 0x10000, 0x2000, CRC(f6ccfbd4) SHA1(69c3da2cbefc5e03a77357e817e3015da5d8334a) ) 518 ROM_LOAD( "136022-101.1f", 0x12000, 0x2000, CRC(e2e17236) SHA1(81fa95b4d9beacb06d6b4afdf346d94117396557) ) 519 520 ROM_REGION( 0x4000, "gfx1", 0 ) 521 ROM_LOAD( "136022-106.8d", 0x0000, 0x2000, CRC(9d1d89fc) SHA1(01c279edee322cc28f34506c312e4a9e3363b1be) ) 522 ROM_LOAD( "136022-107.8b", 0x2000, 0x2000, CRC(39960b7d) SHA1(82bdf764ac23e72598883283c5e957169387abd4) ) 523 Thanks Justin _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org Archive site: http://seven.pairlist.net/pipermail/techtoolslist/