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schellboy
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Registered: ‎04-27-2009

IProg with SPI 4 byte addressing

Hello,

I'm trying to warm boot to an address in SPI flash above 128 Mbit, so I need 4 byte addressing enabled to do so.  When I boot the FPGA , it does so with 4 byte addressing mode enabled, but when I issue a warm boot once the FPGA is alive, the upper address bits are ignored and the command given to the SPI flash is a 3 byte address read.  I read in the config user guide that the configuration logic is not reset with a warm boot, but it seems to have forgotten that it was in 4 byte address mode.  Is there a reason for this?  Can I issue an enter 4 byte address mode command prior to giving the warm boot command to achieve what I want?

 

Thanks,

 

John

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