Re: [Gumstix-users] Gumstix Emulator

[Doug S. <do...@pr...>]

Keith,

The software ARM emulators do simulate IO, and JTAG does allow you to 
single step
through code using a debugger. Like I said it already exists. In fact 
you have
choice of many different debuggers and emulators. Some are free, some 
cost a lot.
On the freebie side, you can connect ocdremote, which is a JTAG 
interface to
debuggers, to various debuggers including GNU gdb. This is actually 
better than
external circuit simulator: you debug with your actual external 
hardware. Look
into ocdremote, eclipse IDE, insight debugger, and related GNU ARM 
toolchains.
These are all free and work together. For more choices see rowley's 
crossworks,
IAR, green hills software etc. As said before: This is just a StrongARM, 
and
there are tons of emulators and tools for it.

  -- Doug





Keith Olson wrote:

> What made me think of it was reading the posts from people who /don't/ 
> have an oscilloscope/JTAG/etc. and need to know what is happening with 
> their I/O.  I'm not talking about just a CPU emulator, but to emulate 
> the entire board(s), I/O and all.  I can visualize stepping through a 
> program with a vertical signal trace running down the side, letting 
> you know what is happening command by command.  Mind you, to /really/ 
> make it useful, a programmable, loopback-plugin system (to simulate 
> external circuits) that would return signals for preset inputs would 
> be just the ticket.
>
> Keith