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Reading an Ocad 386+ design into Orcad Capture 7.0 for windows


Record #1224

Product Family:  Software

Product Line:  OrCad

Problem Title:
Reading an Ocad 386+ design into Orcad Capture 7.0 for windows


Problem Description:
Often an engineer will need to read an OrCAD SDT 386+™design into capture for wi
ndows.
This usually happens if there is need to update an existing SDT 386+ design  or
if
The engineer receives the SDT 386+ design from a colleague.

What files does Capture require for proper translation?


Solution 1:

1. Net attributes: net flag symbols
In SDT-based Xilinx designs, special critical nets were declared using library s
ymbols: C (critical), N
(noncritical), and L (longline) components wired to the appropriate nets. Replac
e C, N, or L components with net properties on the appropriate schematic wire.

2. Groups and timing specifications: TIMEGRP and TIMESPEC pipe-text:
In SDT-based Xilinx designs, library symbols were grouped and associated through
 SDT part fields and TIMEGRP pipe-text, and timing specifications through TIMESP
EC pipe-text. Replace
pipe-text with the new TIMEGRP or TIMESPEC symbols available from the appropriat
e XC<family>.OLB schematic library.

3. Part targets: PARTTYPE pipe-text
In SDT-based Xilinx designs, pipe-text was used to target the schematic workshee
t to a specific Xilinx component. Capture does not facilitate this function; how
ever, you may choose a specific target architecture and package for a project cr
eated by the XACTstep Design Manager.

See the Getting Started chapter in the Xilinx Design Manager Flow Engine, Refere
nce/User Guide for more detail.

4. Global attributes: GLOBAL pipe-text
In SDT-based Xilinx EPLD designs, pipe-text was used to specify compiler and fit
ter optimization controls. Capture does not facilitate this function; however, y
ou may establish global attributes for a project created by the XACTstep Design
Manager.

See the Implementation Options chapter in the Xilinx Design Manager Flow Engine,
 Reference/User Guide for more detail.



Solution 2:

SDT 386+ stores designs as schematic files(.sch) and library files(.lib). Also,
a configuration file named SDT.CFG contains necessary information, such as which
 SDT 386+ libraries are required by the schematics.

Place the schematics, user libraries, and SDT.CFG into a directory. You may need
 to adjust the SDT.CFG information, such as PLIB=... so that the paths are corre
ct. You can edit SDT.CFG in a text editor, such as Notepad.

From Capture select File->Open->design
Change file type to SDT Schematic (*.sch)
Select the top level schmatic from your design directory

Capture will create a new file with a .dsn extention that contains all of the de
sign information.



End of Record #1224