Mahesh,
I'll assume that you are running the VERA microcode; we never ran the microcode
in simulation, so I am not sure what the real answer is. However, this might
correspond to a problem we've been having on real hardware where the ready bits
are stale as we read them, so we get bad data from the FIFO. Unfortunately I
don't know a good solution for this problem.
Zuki
On Wed, 19 Jun 2002, mahesh hampasagar wrote:
>
> Hi ,
> i have got 1 problem with microcoding of ixp1200, when iam running in
> simulation mode to receive the packet with more than 2 threads, it gives the
> error saying receiver buffer undreflow, suppose if i run for 2 threads no
> problem . and if i see the command prompt it says
> ***** %E-ERROR at fbox cycle 3805 in simulation
> ---------- (NOTE: Execution will stop ASAP due to error.):
> FBUS logic - unexpected encoding on incoming byte enables: ff
> Simulation prematurely stopped due to error condition.
>
> if u have any idea pl let me know
>
> thanx,
>
> mahesh
>
>
>
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--
Yitzchak Gottlieb
zuki(a)CS.Princeton.EDU
