does trim rom works with every rom ?

the-war · October 14, 2006, 08:59:37 PM

topic

liquidnitrogen · October 15, 2006, 01:46:48 AM

no, but most should work

Devil_Spawn · October 15, 2006, 06:00:07 AM

never ever not worked for me

sardaukar · October 15, 2006, 11:26:02 AM

Trim rom works by removing "byte padding". What this means is that ROMs are made bigger to fit the next power of 2 number (8,16,32,etc.) : so if a ROM is 33 Mb in size, it must be padded to 64Mb with zeros and trimming removes that "extra" stuff. Still, some ROMs are so close to those numbers (imagine 31Mb) that trimming is not that much of an advantage. Also, it can be a future copy-protection scheme.

ate4m · October 15, 2006, 02:16:40 PM

I've been trimming all of my ROMs, and they work perfectly. I save quite a bit of space by chopping off the extra dummy data, too. Think of it like this: if you can only fit 10 games on your card untrimmed, trimming them all would allow for one more.

meangreenie · October 15, 2006, 02:19:43 PM

Don't know if it got fixed with 2.56, but 'Open Season' with 2.55C is the only rom I have ever known not to work with 'trim' on SC

liquidnitrogen · October 15, 2006, 06:28:13 PM

meteos doesnt work with trimmed... (i believe i tried it... and it doesnt run)

tennisgy · October 15, 2006, 07:42:37 PM

I think mine is trimmed

onekelly · October 15, 2006, 07:59:26 PM

My copy of open season is trimmed and working. You need to check out the Supercard compatibility list. It has all the info needed for compatible issues with SC.

it also says that metoes is trimmable.

Haoie · October 15, 2006, 08:45:51 PM

How much you can trim off really varies from game to game. From nearly nothing to less than half size.

Devil_Spawn · October 16, 2006, 10:54:11 AM

i dont think you can go less than half or a different rom dump size would have been used.
meteos works