Rockbox Development > New Ports
SanDisk Sansa c200v2, m200v4, clipv1, clipv2, clip+, and fuzev2
kugel.:
--- Quote from: funman on October 16, 2009, 10:51:18 AM ---
--- Quote from: kugel. on October 16, 2009, 10:48:23 AM ---I was wondering how this is possible if we use the same setting as the OF.
--- End quote ---
Are you sure the OF use 1.10V ?
--- End quote ---
That was according to you. Use looked at the disassembly and told that :)
FlynDice:
I think I've figured out the CLKIDE link. I think CLKIDE is MCLK for the pl180 controller for the internal SD. I ran test_disk on the internal SD with IDECLK at 82 MHz, 62MHz, and 24 MHz and I think the results point strongly to this conclusion. See the attached file.
I'm not looking for agreement here, I'm looking for reasons to disprove this hypothesis!
Fire away.
Edit:
Assuming this is correct I have been able to run the internal at 24.8 MHz and it works fine but feels a bit sluggish. Once again I cannot run data without the bypass bit set so I can't run the controller MCLK at 49.6 and divide by 2 to get MCICLK = 24.8 MHz. I have to run the controller at 24.8 MHz and that slows things down...
Another thought is that we are overclocking the internal card much more than we thought. The internal card is a v1(I tested on my e280v2 and I'm assuming the same for the rest of the as3525's) and , in fact will not accept the switch to HS timings. Which means the spec frequency is 25 MHz max. We're currently running at 82 MHz MCLK with bypass meaning the card is being clocked at over 3 x the maximum!!
funman:
The slowdown is a bit less than 50% so that looks OK.
We should compare to the OF transfer speed in USB mode
Urutoraman:
Is this the right forum to post?
I was using Rockbox fine on my e280v2 for a week and decided to load the current build 2 days ago. Now I am getting this *PANIC* SD Transfer Error: 0x8 all the time. r23313.
Have an A-Data MicroSDHC with 4GB.
Weird part is that if I navigate through the Database menu I can get songs to play from the microSD card but after a few minutes it skip and I get the SD Transfer error again.
Tried a chkdsk but it didn't found any issues on the SD card.
Any thoughts?
By the way... Good work.
FlynDice:
Have I done this correctly? I tried to add ISR INT_MCI1 and INT_IDE to demonstrate that MCI_MASK1(INTERNAL_AS3525) is masking for INT_IDE. I made MCI_MASK0(drive)=0 and MCI_MASK1(drive) = MCI_ERROR | MCI_DATA_END(ie I swapped them). My aim was to run the code using the two Mask1 registers(replacing the current MASK0 registers) to show that the internal drive MASK1 is doing masking on INT_IDE. Rockbox operates quite normally this way but is my logic sound enough to draw this conclusion?
Yes I know we don't need them right now but I'd like to understand how these things are put together better..... ;)
see http://pastie.org/664619
EDIT:
@ Urutoraman
I would be interested in knowing what system/debug/View disk info reports for the Speed of your card.
The internal is displayed first then if you push the select button it should cycle through your disks.
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