Nios II

NiosI (and I'm hoping Nios2 based on Jesse's comment that I quoted) operates completely over the JTAG port without germs. nr myprog.srec downloads and runs myprog over jtag without germs.

It would be nice if n2r mynios2prog.srec worked the same way.

Here is a partial workaround using the fs2 debug console. You need to read "Getting Started" under help menu in the console.

n2c

openport altlpt1 //openport sld will work but lower performance

load srec mynios2prog.srec

//Basic run commands

step

go

halt

// read all registers

regs

// open a window for stdio

stdio window

If you turn on HW Trace you can get not only HW trace but minimal source level debugging as well

but you have to run nios2-elf-fs2symbols mynios2prog. A bug that seems common to most N2 tools is you must have a .elf file extension but the sample makefile produces a .out file. No fear, you can just copy myprog.out myprog.elf. Another anoyance is the .elf has to be in the same dir as your .srec so if you're using the sample makefile cp obj/myprog.out ./myprog.elf before generating the fs2 symbol file. (this out/elf bug happens with n2d as well)

The downside to operating over the jtag using fs2 console is that the 'stdio window' does not seem to function as it does with nios1 programs. (Altera? Anyone?)

Ken