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ARM9 CPUs start at "faster then 1 core of a V1 Sansa" and get faster from there. Still saying "ARM9" doesn't tell us much, since theres a lot of very different processors sold under the ARM9 brand, with the common factor being that they were all before ARM10 and faster then ARM7.
A quick check seems to indicate the primary CPU core related diffs are:they use the exact same ARM core (ARM926EJ-S)
But this LPC3130 don't have DSP instructions has the AT91SAM9260 have. I think that DSP instructions could be good for audio processing.
QuoteBut this LPC3130 don't have DSP instructions has the AT91SAM9260 have. I think that DSP instructions could be good for audio processing.Only if you would optimize the existing codecs to use said DSP instructions. I would expect that to be quite complicated and not for the faint of hearted in the audience. And there's nothing like that done for existing ARM targets.
So, are you still going to have two different complier? A complier for the Rockbox source and a different complier for the microcontroller?
The LPC3130 has only one storage interface. Didn't you want to have internal and external storage? Or is it still possible with only 1 interface?
I think system will use NAND flash for boot but can also boot from SD Card (although I don't know how we will do with the royalties for using SD bus).
This is a three quotes from "Using Open Source Tools For AT91SAM7S Cross Development" pdf
On this part of Rockbox site;http://www.rockbox.org/twiki/bin/view/Main/SimpleGuideToCompiling#What_You_Will_Needit shows that Cygwin is used, but the utilities does not need it.
This is confusing, are the utilities a version of Cygwin or rewritten with Cygwin?
Quote from: casainho on April 29, 2009, 07:59:03 AMI think system will use NAND flash for boot but can also boot from SD Card (although I don't know how we will do with the royalties for using SD bus).IIRC you only have to worry about royalties if you use the SD mode. If you use the spi mode to talk to the SD card you don't have pay any royalties.The spi mode might be a little slower since in SD mode you can transfer several bits at a time.
NOTE: We pretend to use internal NAND Flash for booting and not the SD Card. That NAND will hold RB bootloader + firmware. SD Card for music files (expansion storage).
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