Andrew , Thank you for your reply. Yes, I know that there was/is DMA mode but where was found out that 17 bit ( defines it as DmaAcc ) turns ON/OFF DMA? Does anyone use UrJTAG SUCCESFULLY with MIPS processors and particularly with DMA access? I think quite a lot of things are copied from HairyDairyMaid utility and from my experince the source code of HairyDairyMaid utility does not work correctly ( at least for my CPU) Cheers, Ja. > > Older versions of ejtag have an optional 'dma' mode where the jtag > > port can write directly to memory rather than having the cpu do all > > the moving. It was not widely implemented. On Feb 9, 2012 1:30 PM, > > > > > > I browsed a source codes of urjtag.-0.10 and would like to ask > > > any experts 2 questions: > > > > > > 1. > > > File > > > ejtag_dma.c > > > in \urjtag-0.10\src\bus directory > > > > > > uses 17 bit ( defines it as DmaAcc ) > > > of EJTAG_CONTROL register. > > > But EJTAG specification 2.6 or 3.1 say about that 17th bit > > > "Must be written as zeros; return zeros on reads." > > > > > > How was found out it is nescessary to use that bit? > > > > > > > > > 2. > > > File > > > ejtag.c > > > in \urjtag-0.10\src\bus directory > > > > > > if > > > EJTAG_VER == EJTAG_20 > > > writes something to > > > > > > > > > Debug Control Register Address, 0xFF300000 > > > > > > Why is that nescessary? Is there a description why is that needed? > > > Thanks > > > > > > > > > > > > > > > ------------------------------------------------------------------ > > > -- ---------- Virtualization & Cloud Management Using Capacity > > > Planning Cloud computing makes use of virtualization - but cloud > > > computing also focuses on allowing computing to be delivered as a > > > service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ > > > _______________________________________________ UrJTAG-development > > > mailing list [email protected] > > > https://lists.sourceforge.net/lists/listinfo/urjtag-development > > > > > > >
------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ UrJTAG-development mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/urjtag-development
