lm32 remote debugger issues

[jukka.pietarinen at mrf.fi (Jukka Pietarinen)]

Michael Walle wrote:
> @Jukka:
> im just curious, as i dont own original lattice hardware. Can you use the
> debug monitor together with the jtag uart? (The debug monitor uses the
> jtag uart for communication, so there must be something like a multiplexer
> and an own send function for the juart)

Yes, you can. But using the JTAG cable/uart is very slow, I get download 
transfer rates of 1 KB/sec only and I have to run the USB/JTAG cable 
software in a virtual machine :( that is why I'm looking into using a 
serial interface (up to 115 kbaud) instead.

I think the sources for the gdb stub are in newlib/libgloss/lm32 but I 
don't know how to build the stub and include in the FPGA bit stream 
instead of the Lattice default stub, yet.

-- 
Jukka