Re: Crystal Castles ROM Address Range

Justin Johnson wrote:
> 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
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>
Isn't this a 68000CPU based game?

If that is the case then read the 68000 pod manual on reading ROMs. You
will need to translate the signature that the Fluke generates as it
isn't the same as the checksum by any means.

There is a a lot of info here:

http://tech.quarterarcade.com/tech/Fluke/9010A/

I recommend you download and read up on the FIDE program as well as the
other sections including the algorithym generator - this will enable you
to generate Fluke algorithyms from file images so you can verify if the
on board ROM is being read correctly (assuming the ROM is valid, and
addressed properly with no stuck address or data lines.

John :-#)#

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Received on Wed Nov 21 01:13:04 2012