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Altera_Forum
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16 years ago

Memory Access via JTAG (MemTest)

The JTAG IF via USB Blaster offers the possability to gain access to FLASH, Nios and other stuff. Does anybody know how to gain access via JTAG to any address location, read and write ? The t...
Altera_Forum's avatar
Altera_Forum
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16 years ago

Hi Michael,

Here are some possible solutions:

1) Add (eventually interupt activated) debugging software to your nios applications to communicate with the JTAGuart.

2) Write some kind of debug application on the nios and communicate with the JTAGuart.

3) For some on-chip MegaFunctions you can use the TCL scripting facility of the "In-System Memory Content Editor". See page 16.8 (http://www.altera.com/literature/hb/qts/qts_qii53012.pdf) in Volume 3 of the Quartus-II handbook.