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Haze
Reged: 09/23/03
Posts: 5244
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Re: DU: TourVision update
08/29/17 12:05 PM


> Not entirely true, one or two had different dumps, but more importantly the cart
> system is switching the equivalent of an 8mbit cart regardless of the actual size.
> I've argued for a while now that these images shouldn't be stripped as many now are.
> Additionally there's a TourVision specific item of data which goes with each cart -
> the ID, it's an 8 bit field created by jumpers on 8 extra cart pins.

They should be stripped

THERE IS NOT 8MBIT OF DATA INSIDE OF THEM

There's not even a valid argument for this any other way, any time you see data duplicated in the dumps it's coming from the exact same physical bits inside a rom due to address lines going nowhere.

I respect your work, but you really are making yourself look like a fool with this one.

MAME currently completely misrepresents the storage capacity of each cart for any dump that isn't stripped, a grand total of 0 of them can actually store 8MBIT, that physical capacity does not exist inside of them.

You wouldn't stick a 1MBIT rom in a reader, read it as 8MBIT and claim the duplicate data is correct, that's what is being done here, just because there's a bunch of epoxy etc. around those roms doesn't change their capacity.







Entire thread
Subject Posted by Posted on
* DU: TourVision update SmitdoggAdministrator 08/27/17 07:01 PM
. * Re: DU: TourVision update agard  08/28/17 02:41 AM
. * Re: DU: TourVision update CTOJAH  08/28/17 03:11 AM
. * Re: DU: TourVision update agard  08/28/17 05:58 AM
. * Re: DU: TourVision update CTOJAH  08/28/17 06:23 AM
. * Re: DU: TourVision update agard  08/28/17 10:29 PM
. * Re: DU: TourVision update CTOJAH  08/28/17 11:50 PM
. * Re: DU: TourVision update Foxhack  08/29/17 12:28 AM
. * Re: DU: TourVision update system11  08/29/17 11:01 AM
. * Re: DU: TourVision update Vas Crabb  08/29/17 01:14 PM
. * Re: DU: TourVision update Haze  08/29/17 12:05 PM
. * Re: DU: TourVision update Vas Crabb  08/29/17 01:17 PM
. * Re: DU: TourVision update Haze  08/29/17 01:40 PM
. * Re: DU: TourVision update gregf  08/27/17 08:52 PM
. * Re: DU: TourVision update Dullaron  08/27/17 09:46 PM
. * Re: DU: TourVision update system11  08/28/17 11:03 PM

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