U
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Creating the Microprocessor Platform in MSB
26
LatticeMico32 Hardware Developer User Guide
Changing Master Port Arbitration
Priorities
When you first generate your platform, LatticeMico System automatically
assigns priorities through the shared-bus and slave-side fixed arbitration
schemes to the master ports to determine in which order they can access the
slave ports through the arbiter. You can change these priorities only for the
shared-bus and slave-side fixed arbitration schemes. This option is disabled
for the slave-side round-robin arbitration scheme, since it is not applicable.
To change master port arbitration priorities:
1. In the MSB perspective, click in the Editor view to make it active and
choose
Platform Tools > Edit Arbitration Priorities
from the menu, or
right-click in the Editor view and choose
Edit Arbitration Priorities
.
2. In the Edit Arbitration Priorities dialog box, click in the
Priority
column
next to the master port whose priority you wish to change.
3. Type in the new priority number.
4. Click
OK
and choose
File > Save
to save this in the .msb file.
Figure 11: MSB Perspective After Adding All Components in a Slave-Side Fixed Arbitration Scheme
