SimNOW debugger syntax help

[Myles Watson]

Marc, Jordan, or another SimNOW user,

f[b|w|d|q] <Address range> <Value> [,[l|p]] Fill physical(default) or linear
Memory

I wanted to fill the VGA RAM with a pattern, but I can't figure out the
syntax for an <Address range>.  It keeps freezing the simulator.  Could you
give me an example for filling 1M of memory in physical address space with
some pattern?

I would have expected the [,[l|p]] to come after the <Address range> too.

Thanks,
Myles

[Marc Jones]

Myles Watson wrote:
> Marc, Jordan, or another SimNOW user,
>
> f[b|w|d|q] <Address range> <Value> [,[l|p]] Fill physical(default) or 
> linear Memory
>
> I wanted to fill the VGA RAM with a pattern, but I can't figure out the 
> syntax for an <Address range>.  It keeps freezing the simulator.  Could 
> you give me an example for filling 1M of memory in physical address 
> space with some pattern?
>
> I would have expected the [,[l|p]] to come after the <Address range> too.
>
> Thanks,
> Myles

fd 100000 10001f ,p 5a5a5a5a

worked for me. You are right about the ,p. I am not sure why it would be 
freezing unless the mem map is really screwed up and it is going 
somewhere bad.

Marc

[Myles Watson]

> -----Original Message-----
> From: Marc Jones [mailto:[e-mail]]
> Sent: Tuesday, October 21, 2008 2:50 PM
> To: Myles Watson
> Cc: Coreboot; Jordan Crouse
> Subject: Re: SimNOW debugger syntax help
>
> Myles Watson wrote:
> > Marc, Jordan, or another SimNOW user,
> >
> > f[b|w|d|q] <Address range> <Value> [,[l|p]] Fill physical(default) or
> > linear Memory
> >
> > I wanted to fill the VGA RAM with a pattern, but I can't figure out the
> > syntax for an <Address range>.  It keeps freezing the simulator.  Could
> > you give me an example for filling 1M of memory in physical address
> > space with some pattern?
> >
> > I would have expected the [,[l|p]] to come after the <Address range>
>
> too.
> > Thanks,
> > Myles
>
> fd 100000 10001f ,p 5a5a5a5a
>
> worked for me. You are right about the ,p. I am not sure why it would be
> freezing unless the mem map is really screwed up and it is going
> somewhere bad.

Thanks.  It looks like the IO addresses are getting through to the VGA card,
but I can't find the memory addresses changing for the buffer memory.  This
should help me look.

I set a breakpoint on c0040 since that's the string that gets copied to the
display memory.  The first time it gets accessed is when the ROM gets copied
to c0000, but the next time is the right one.

Thanks,
Myles