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ArcadeG
MAME Fan
Reged: 04/21/17
Posts: 9
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bad dump's?
#369458 - 09/06/17 01:33 AM


today i was playing some cps1 games and when loaded i encountered this message with some games

one or more roms/chds have not been correctly dumped.

games like mercs,warriors of fate, the punisher have that message

what does that means?



Master O
Yes, Even Parodius Music
Reged: 11/20/06
Posts: 1142
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Re: bad dump's? new [Re: ArcadeG]
#369459 - 09/06/17 01:52 AM


> today i was playing some cps1 games and when loaded i encountered this message with
> some games
>
> one or more roms/chds have not been correctly dumped.
>
> games like mercs,warriors of fate, the punisher have that message
>
> what does that means?

http://easyemu.mameworld.info/mameguide/mameguide-updates.html



"Note to Noobs:

We are glad to help you but simply posting that something does not work is not going to lead to you getting help. The more information you can supply defining your problem, the less likely it will be that you will get smart-alec replies.

C.D.~"



B2K24
Evolution is a mystery
Reged: 10/25/10
Posts: 2454
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Re: bad dump's? new [Re: ArcadeG]
#369462 - 09/06/17 03:12 AM


> today i was playing some cps1 games and when loaded i encountered this message with
> some games
>
> one or more roms/chds have not been correctly dumped.
>
> games like mercs,warriors of fate, the punisher have that message
>
> what does that means?

It means the hardware isn't fully understood and it's not known how to dump a certain rom. You can still play the game though.

It's nothing you can correct on your end unless you possess the knowledge or skill to improve the situation.






MooglyGuy
Renegade MAME Dev
Reged: 09/01/05
Posts: 1547
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Re: bad dump's? new [Re: ArcadeG]
#369467 - 09/06/17 07:13 AM


> today i was playing some cps1 games and when loaded i encountered this message with
> some games
>
> one or more roms/chds have not been correctly dumped.
>
> games like mercs,warriors of fate, the punisher have that message
>
> what does that means?

It means that one or more ROMs/CHDs have not been correctly dumped



gregf
Ramtek's Trivia promoter
Reged: 09/21/03
Posts: 6863
Loc: southern CA, US
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Re: bad dump's? new [Re: ArcadeG]
#369479 - 09/06/17 04:40 PM


>today i was playing some cps1 games and when loaded i encountered this message with some
>games. One or more roms/chds have not been correctly dumped. What does that means?

Others already explained, but just for extra detail to mention some of the pcbs might have parts that the contributor might not have a specific adapter to handle extracting data/reading from a particular component.


>games like mercs....have that message


Using Mercs as an example.....

--
src/mame/drivers/cps1.cpp

ROM_REGION( 0x0200, "cboardplds", 0 )
ROM_LOAD( "c628", 0x0000, 0x0117, NO_DUMP )

ROM_REGION( 0x0200, "bboardplds", 0 )
ROM_LOAD( "o222b.1a", 0x0000, 0x0117, NO_DUMP )
ROM_LOAD( "lwio.12e", 0x0000, 0x0117, CRC(ad52b90c) ) // pal verification required

ROM_REGION( 0x0200, "cboardplds", 0 )
ROM_LOAD( "c628", 0x0000, 0x0117, NO_DUMP )
ROM_END
--


some pcbs might have GALs or pals that a contributor might not have a specific reader to handle reading data from the component. In fact some are protected and not really readable whatsoever. As already mentioned, these are out of the hands of most users unless someone actually does have a pcb and can send to someone that has equipment that can read the data.

Over the past ten years a number of the Cps1 pcbs have been redone in which there have been a lot of rom fix updates and more pal and gal components being read so the cps1 emulation progress has improved a fair amount.


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