Answers Database
Reading an Ocad 386+ design into Orcad Capture 7.0 for windows
Record #1224
Product Family: Software
Product Line: OrCAD
Product Part: capture
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 windows.
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 symbols: C (critical)
, N
(noncritical), and L (longline) components wired to the appropriate nets. Replace C, N, or L compone
nts 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 TIMESPEC pipe-text. Replace
pipe-text with the new TIMEGRP or TIMESPEC symbols available from the appropriate XC<family>.OLB sch
ematic library.
3. Part targets: PARTTYPE pipe-text
In SDT-based Xilinx designs, pipe-text was used to target the schematic worksheet to a specific Xili
nx component. Capture does not facilitate this function; however, you may choose a specific target a
rchitecture and package for a project created by the XACTstep Design Manager.
See the Getting Started chapter in the Xilinx Design Manager Flow Engine, Reference/User Guide for m
ore detail.
4. Global attributes: GLOBAL pipe-text
In SDT-based Xilinx EPLD designs, pipe-text was used to specify compiler and fitter optimization con
trols. Capture does not facilitate this function; however, you 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 Guid
e 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.C
FG information, such as PLIB=... so that the paths are correct. You can edit SDT.CFG in a text edito
r, 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 design information.
End of Record #1224 - Last Modified: 03/06/97 16:18 |
