Re: [oc] Problem with Risc5x core

["MikeJ" <mikej@opencores.org>]

Woken up now and actually read the code in question.
Seems to work fine here but under investigation still.
Mike
----- Original Message -----
From: "MikeJ" <mikej@opencores.org>
To: <cores@opencores.org>
Sent: Thursday, February 14, 2002 10:27 PM
Subject: [oc] Problem with Risc5x core


>
>
> > Hi !
> >
> > Might be a problem with the prescaler - although the core is pretty well
> > tested now, the timer has really not been fully exercised yet. I'll have
a
> > look at it this weekend and extend the test suite to cover it.
> >
> > I've had a few requests for hexfile translators. I have a little C
program
> > that takes in a .hex file and drops out ucf / attribute init statements
> for
> > synthesis. Again, I'll release it over the weekend once I've tidied it
up
> a
> > bit.
> >
> > I have two cores in the same chip running here with some tiny Xilinx
> > specific uarts attached - and am using one to serial download programs &
> > monitor the other. Hope to get to full status readback, single step etc.
> >
> > Cheers,
> > Mike.
> >
> >
> > > hi Mike,
> > >
> > > I 've downloaded your micro core. Really nice core !!
> > > I've implemented it in an Xilinx Virtex E. I don't use the 'VIRTEX'
> > > architectures, instead I use the 'RTL' architecture.
> > > I wrote a few test programs and found the following problem:
> > >
> > > Part from test program
> > >
> > > Timer0 equ H'001e'
> > >
> > > start movlw 0xaa
> > > loop decfsz Timer0,f
> > >        goto loop
> > >
> > >        rest from program
> > >
> > > The File timer0 is allways decrememted by 2 and not by 1 !!
> > > If I preset the file to 0xff ist counts 0xff, 0xfd, 0xfb. Therefore it
> > comes
> > > to 0x03, 0x01 and then to 0xff. The Z-Flag is never set.
> > > Can you explain it ???
> > >
> > >
> > > And a second question:
> > > How can you (I) translate a hex-file in the form that the DPRAM -Init
> > > Attritbutes are set correctly ?
> > >
> > >
> > > Best regards
> > > and go on with this nice design
> > >
> > <snip>
> >
>
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