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Altera_Forum
Honored Contributor
Honored ContributorTwo cpu's with one JTAG UART
Hi All
I've just upgraded from Quartus 4.2 and Nios 1.1 to Quartus 5.0 and NiosII v5.0. One of the first projects I've tried to convert has two processors in it using the same Jtag Uart (so that I can debug either one of them through the IDE). This was perfectly ok in SOPC builder 4.2 but the new SOPC Builder complains that I can't have two masters on the same JTAG Uart. Is this a bug or is there a way around this problem ? Regards Nir1 Reply
Altera_ForumYou can have multiple JTAG Uarts in a system and the IDE will support it if you create seperate hardware configurations then run in multiprocessor mode. This document shows a different way to go about this where multiple masters communicate to a single master that talks to the JTAG Uart
http://www.altera.com/literature/tt/tt_nio...or_tutorial.pdf (http://www.altera.com/literature/tt/tt_nios2_multiprocessor_tutorial.pdf) Hope that helps.
