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Altera_Forum
Honored Contributor
Honored ContributorMy First Nios-II
Hi, I am trying to run a really simple Nios-II application using the ISS. After starting execution, the application does not even reach main(), however. Instead it decides to crash within...
Altera_ForumHonored Contributor
Honored ContributorRoland,
The error message is complaining about the instruction fetch. <div class='quotetop'>QUOTE </div> --- Quote Start --- ERROR: [439] instruction fetch access to address 0x1af8 returned uninitialized memory[/b] --- Quote End --- It sounds like the simulator's memory at 0x1af8 hasn't been initialized. The simulator realizes this when it fetches an instruction from that address. <div class='quotetop'>QUOTE </div> --- Quote Start --- I wonder if it has to do with the remark 'valid mask=0x0' in the error message.[/b] --- Quote End --- I think that the value mask records which bytes of the memory have been initialized. 0x0 means an entirely uninitialized word. Kerry
