JED2S15 Plus is a software package that translates a JDL file (produced by the ACUGEN AADELAYTM software) into a Schlumberger S15, S50, or S1040 VLSI tester memory data code (MDC) file. JED2S15 Plus also performs macro processing and position-independent data substitution on a user-supplied Pascal test program shell and header files. The processed test program shell and MDC file verify PLDs for DC Parametric, Functional, and AC Parametric compliance. When JED2S15 Plus is used with the ACUGEN AADELAY and ATGEN® software and a user-supplied test program shell, PLD test program development for the Schlumberger S15, S50, or S1040 VLSI test system is truly automated.
Overview
JED2S15 Plus performs symbol substitution on a user-supplied Pascal test program shell (a test program with all variable data changed to symbol markers). The substitution process is very similar to a form letter generator - JED2S15 Plus replaces each symbol marker in the test program shell with the symbol's value (obtained from a parameter file), all other text is left unchanged. This technique provides a consistent test program format and allows a programmer to alter the test program shell - a feature not available from hard-coded generators. A properly constructed test program shell can be used to test all PLD designs. A sample Pascal language test program shell is included to demonstrate the symbol substitution process.
JED2S15 Plus also translates the JDL file into a MDC file containing the test vectors necessary to functionally achieve the ATGEN-reported PLD fault coverage. The MDC file always utilizes the automatic MD file format to ensure the availability of signal formats required by many PLD designs. JED2S15 Plus also creates AC Masks - test vector sets containing only transitions with the same propagation delay time and stimulus (all other transitions are masked out) - to support AC Parametrics.
Fast Translations
JED2S15 Plus will typically translate a JDL file into a MDC file and process a test program shell in under one minute when running on a 10Mhz IBM AT or compatible.
AC Parametric Testing
JED2S15 Plus creates as many AC Masks in the MDC file as required by the PLD design. The AC Masks provide a fast method of verifying a device's AC parametric compliance - typically only requiring a few invocations of the standard FTEST_START function. Worst-case AC parametric values can be obtained using the standard SEARCH utility on the same AC Masks. The AC Mask technique is much simpler and faster than trying to validate each transition's delay individually which could require hundreds or thousands of strobe settings and pattern passes.
All AC test limits are determined by the delay, phase, and settling time data obtained from the JDL file. Using these limits, JED2S15 Plus supports AC parametric testing for PLD designs with complex feedback paths, I/O switching, etc., as effortlessly as AC parametric tests for simple PLD designs.
Fully Documented
JED2S15 Plus produces a message file documenting the entire translation process. A header section that documents the translation process, test system requirements, test adaptor requirements, the input files, the programmer, etc., can be placed in the processed test program by using the appropriate symbol markers in the test program shell.
Unlimited PLD Support
JED2S15 Plus comes with approximately 100 ASCII parameter files for commercial and military PLDs. These parameter files contain the DC and AC parametric test conditions and DC parametric test limits for the PLD. Users can modify these files to meet their needs or create new parameter files using a text editor. JED2S15 Plus comes with detailed instructions on how to create your own parameter files for any PLD.
User-Definable Translations
JED2S15 Plus uses an auto-configuration file to control the MDC file generation and test program shell processor. You can customize this file to your liking to establish the translation defaults. JED2S15 Plus has over 90 user-definable features. To simplify the handling of special situations, the auto-configuration file settings can be temporarily altered from the command line. New command line options can be added using the built-in preprocessor directives (#ifdef, #ifndef, etc.).
Platforms Available
JED2S15 Plus is available for IBM compatible PCs running PCDOS or MSDOS, Sun 3 workstations running SunOS 4.0.3 or later, Sun SPARCstations and Sun 4 workstations running SunOS 4.1.x or Solaris 2.3 and later, HP 9000/700 systems running HP-UX, DEC Alpha/AXP systems running OSF-1, and VAX/VMS.
Update Service & Support
Update service and support during the first year are included in the product purchase price, including bug fixes, enhancements to software and documentation, and telephone support.