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Re: [MiNT] Firebee Coldfire MiNT Kernel and NFS

Additionally, I remembered there was a silicon problem in all V4 Coldfires that is currently not accounted for in the FEC driver.. See MCF5475DE.pdf (chip errata,http://cache.freescale.com/files/32bit/doc/errata/MCF5475DE.pdf).

SECF067 p. 9 ff. Readout of the packet tail can affect FEC reception and corrupt received data. No idea if the Firebee’s Coldfire have a datecode where this is fixed or not, but even if they do, there is the similar SECF175 which is marked as „will not be fixed“ so it seems we need to account for it anyway.

[to list maintainers: apologize for sending this twice - I was using the wrong email address first]

Am 01.09.2014 um 23:09 schrieb Vincent Rivière <vincent.riviere@freesbee.fr>:

On 01/09/2014 22:51, Markus Fröschle wrote:
on the Coldfire, DMA (which is used for FEC transfers), CPU and PCI
compete for XL bus bandwidth.

Thanks for those precisions.

Does throughput increase also if you have screen output on EmuTOS?

As said in my previous message, yes.
The NFS behavior is strictly the same with FireTOS and EmuTOS.

Vincent Rivière