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- PADS-LOGIC Version 3.0 ADVISORIES
-
-
- PART TYPES
-
- When changing a part type to a different part type, The reference
- designation will not be affected. For example, if a resistor part type
- were changed to an I.C. part type (an R1/4W for a 7404), the reference
- designation would remain as it was assigned to the R1/4W part type. In
- this example, the user must manually update the reference designation
- after the part type has been changed.
-
-
- NETLIST
- When a user specifies a Reports, Netlist out, using PADS-PCB, the user
- should note that the PCB decal defined in this ASCII file identifies a
- specific decal which appears in his/her PCB database. This new version is
- enhanced to allow all the alternates to be available in Pads-Pcb providing
- the alternate decal being called out is one of the alternates presently
- defined in the part type used to bring the part in. If the decal is
- completely independent of the part type being used, then only that specific
- decal will be available in the board design.
-
-
- REPLACE PART
- Attempting to replace a part in a schematic which has less pins than the
- original part results in the prompt: "NEW PART HAS LESS PINS THAN ORIGINAL
- PART", and the part will not be replaced. This is an error checking
- function that is performing correctly. You cannot change a part with fewer
- pins because connections would be lost. Always replace with a part
- containing the same number of pins or more pins. If not possible, the
- original part must be deleted and the new part (with fewer pins) put in and
- reconnected.
-
-
- DUPLICATE PIN NAMES
- Unable to have duplicate pin names in LOGIC decal! Names such as NC or N/C
- must be different, ie: NC1, NC2, etc.. This is functioning correctly and
- will not be changed. If desired, add the names as free text in the Mod Gate
- routine.
-
-
- REFERENCE DESIGNATORS
- Pure alpha reference designator names are not supported.
-
-
- BUS NAMES
- Bus names with alphanumeric characters are not supported, ie: DA1[00:13],
- only names such as DA[00:13]
-
-
- DISK SPACE
- Please be advised that on systems with low amounts of hard disk space, a
- message appears indicating your disk space is low, and the backup files
- cannot be created without clearing up more disk space. If the message goes
- unheeded, the system in some cases will attempt to try backing up the
- schematics and get caught in a never ending loop. A reboot of the system is
- the only way out of the software.
-
-
- CAE DECAL GENERATION
- Many users are modifying existing parttypes to make other parts. While
- this is a valid procedure, please be aware that if you make changes to a
- gate decal at this level (physical changes rather than text modifications),
- any other parttype that utilizes this gate decal in its configuration, will
- also assume these physical changes. The correct way to implement these
- changes is:
-
- 1) To use an existing gate decal as a base for generating another, call
- up gate "A" under the "GATE DECAL" command in the library menus,
- produce all the modifications necessary at this point, and save it
- away as gate"B". This way gate "A" is preserved in its original form
- and gate"B" has now been created.
- 2) To generate a new gate decal at the parttype stage, you simply define
- the name in the electrical section. When you complete (F9) the
- parttype, the system alerts you that your gate decal does not
- exist. At this time, select "MOD GATE" and generate your gate decal.
- Once you have finished defining the gate, select complete (F9), and
- save the part away in the normal fashion.
-
-
- OFFPAGE
- If a schematic is brought to another design station and a GROUP/CUT is
- performed which contained offpage symbols, when that cut is re-added to a
- new sheet, the offpage symbol may be added using the wrong symbol. This is
- caused by the differences between the offpage parts which can vary from
- system to system. We recommend modifying the offpage part on system two to
- match that of system one, then paste the group back in.
-
-
- HARDWARE NOTES
- This version is 32-bit only and is not compatible with 80286 or XT computers.
-
-
- FOR PADS-PCB USERS
- If you plan to use the PADS-LOGIC 32-bit option with PADS-PCB, take care
- not to exceed the limits of PADS-PCB. The 16-bit option of PADS-LOGIC will
- not allow you to create a schematic that exceeds the maximum design size of
- PADS-PCB.
-
-
- NET NAMES
- PADS-LOGIC 32-bit supports 47 character net names. PADS-PCB only supports
- 12 character net names. Problems may occur if you are using PADS-PCB and
- exceed the 12 character limitation. PADS-2000 v3.x does support 47 character
- net names.
-
-
- BUS NAMES
- PADS-LOGIC 32-bit supports BUS NAMES up to 44 characters.
-
-
- SIGNAL PINS
- Do not exceed more than 20 characters in the EDIT SIGPIN routine, problems
- may result.
-
-
- PRINTING REPORTS
- To directly print out report files to your printer, type PRN <CR>.
-
-
- If, after reviewing this document and consulting your PADS-LOGIC manual,
- you would like additional information, then contact our Technical Support
- Staff at (508) 486-3328 or 1-800-423-PADS.
-
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-
- ***** END OF LOGIC.DOC FILE *****
-