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Vybrid tower board, can't download >128KB code into SRAM via CMSIS-DAP (DS-5)

Question asked by garrulus on Sep 26, 2013
Latest reply on Mar 8, 2014 by Jack Blather

Using DS-5 / CMSIS-DAP to download more than about 128KB of code into SRAM of the Vybrid tower board (TWR-VF65GS10) fails with the following error message:



! Failed to load "my_project.axf"

! Failed to write 155,352 bytes to address S:0x3F000000

! General error on memory or register access.

If I switch to a higher level of optimisation, and reduce code size to ~121KB, the code loads and debugs normally.

Is this a known limitation?  I was hoping to be able to debug up to the compiler limit (256KB).