Answers Database
M1.x: Epic: Adding Readback capability
Record #4256
Product Family: Software
Product Line: FPGA Implementation
Product Part: Epic
Problem Title:
M1.x: Epic: Adding Readback capability
Problem Description:
Urgency: Standard
General Description: Designer wants to add readback capability to a
design using epic.
Solution 1:
1- Load the design in EPIC.
2- When Epic comes up click on the 'attrib' button on the toolbar. This
will open the 'Main Window Attributes' dialog box. Switch the Edit Mode
from Read-Only to Read-Write. Click on 'Ok'.
3- The readback symbol is in the bottom left corner. To locate the symbol
click on the 'Find' button on the toolbar. This will open the 'Find' Dialog box.
Change the find item from 'Component' to 'Site'. In the 'Name' field type
RDBK in caps. Check the 'Auto Pan' box. Then click on 'Ok'.
4- This will automatically pan you to the location of the symbol and highlight
it red. Now click on the 'Add' toolbar button. This will turn the symbol blue
and add it to the design.
5- Now the user needs to select the IO that he wants to use. Find an unused
Pin. Click on the site. The outline will turn red. Now click on 'Add' in the toolbar
menu. This will turn the site blue and add it to the design.
6- Click on the site again, this will turn it red. Click on 'editblock' from the toolbar
menu. This will open the 'Logic Block Editor' dialog box. You will see three pins.
T, I, and O. With each of these pins there is a mux associated. You click on the
appropriate mux input to select an input or output. This will turn the line from purple
to blue. When you have finished this click on 'Ok'. Follow this step for all of the
inputs and outputs that you need. In general for Readback you only need one
input and one output. One for Trig and one for Data.
7- Routing the Readback symbol to the Pads. To route the Data line goto the
Readback symbol. The third pin from the left is the .DATA pin. Click on it. The
pin will turn red. Goto the Data Pad. Click on the .O pin. It will turn red. Then
click on 'Route' in the toolbar menu. This will route the path. Repeat this for the
other signals.
End of Record #4256 - Last Modified: 05/26/99 07:40 |
