Support and General Use > Hardware
Can we get support for the 64 meg cache instead of 32 on 5g 60gig?
michael.conner:
--- Quote from: orfax on May 26, 2006, 10:44:04 AM ---An experimental build can be gotten here:
ipod5g-64MB
This is a build of the 2006-05-25 23:45 CVS source with only the fix to allow the use of 64MB. It has no other patches applied.
Needless to say, its *only* for a 5th gen ipod with 64MB memory (ie 60Gig ipod video).
If anyone has any problems with it let me know.
I've used it for several hours so far without any problems.
--- End quote ---
I just installed it on mine. Nice work! Once the buffer filled up with an album, I was able to skip from track to track -- all the way to the next-to-last song -- without it accessing the disk. This will seriously do wonders for the battery life!
Murmur2k:
--- Quote from: orfax on May 26, 2006, 03:53:29 AM ---
--- Quote from: mrmagic526 on May 18, 2006, 12:43:17 AM ---Can we get support for the 64 meg cache instead of 32 on 5g 60gig?
--- End quote ---
Just a quick update. It appears I have 64 MB working. The changes to get it working are:
tools/configure: set memory=64
and
firmware/crt0.S: change line 72:
mov r1, #0x3a00
to
mov r1, #0x7400
I believe this tells the memory controller how much memory (in pages?) to remap.
I'll post a little later with a build.
--- End quote ---
Orfax - when do you do the set memory=64 bit? do you run ../tools/configure then select N still?
Thanks
orfax:
--- Quote from: Murmur2k on May 27, 2006, 08:24:52 PM ---Orfax - when do you do the set memory=64 bit? do you run ../tools/configure then select N still?
Thanks
--- End quote ---
Modify the configure script and crt0.S before running "../tools/configure", and then build as you normally would (ie select 15 and then select N).
If you want to rebuild another version with a different memory allocation, you will have to remove the build directory, and start all over.
--- Quote from: The_Gord on May 27, 2006, 10:46:20 AM ---Has anyone using this build/patch notice any significant differences/benefits?
--- End quote ---
I'll get a better idea when I get back to work (which is where I use my iPod). Though I've only just bought it, and I haven't even run down the battery all the way yet (so I'm probably not a good judge).
mrmagic526:
--- Quote from: Llorean on May 22, 2006, 08:30:56 PM ---The main reason 64mb isn't used right now is that we don't have a way of detecting if there's 32 or 64mb on the device
--- End quote ---
I'm assuming there's a way to determine how large of a hard drive is in the unit. You could use that. Have it detect that and then for the 60 gig have it use 64 meg and if it find s a 30 gig hard drive have it use 32. Just a random thought.
Magicman
Llorean:
They're working on a better way to detect RAM, because it's possible that future device (and 80gig 5G?) will happen, and it'd be better not to depend on HD size. Especially since if a good method is determined, one could use it for other targets that may have multiple RAM sizes, if I understand.
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