SESSION 5 NETCHECK TOOLS POWERPCB TUTORIAL I

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PowerPCB Training Manual, Your First Design

Session 5 - Netcheck Tools

PowerPCB Tutorial I - Session 5

NETCHECK TOOLS

Description Page

Software Limits 2

Netlist Formats 3

Netlist Integrity Check 4

Netlist Conversion 5

Netlist Comparison 6

Pads ECO Generation 7

NETCHECK TOOLS SOFTWARE LIMITS

1. Reference Designator Names have a 4 character limit.

2. Pin Names have a 4 character limit.

3. Netnames have a 32 character limit.

4. Illegal characters for pin and net names are: * ! ? @ ~ ^ # & ( ) %

5. Lower case characters are not allowed.

6. NETCHECK TOOLS software must located in a main directory, IE: C:\NETCHECK> it should not be run from a sub directory.

7. All Netlists to be processed must reside in the C:NETCHECK> directory, and not in a sub directory.

8. Netlists can not contain Parts List information.

9. Netlists should not have leading and trailing headers of any kind.

See Page 3 for Netlist Samples.

10. Please use the abbreviation rather than the full name IE: use K, not CATHODE. Use A, not ANODE. All new library decals with special alpha pin numbers (IE: NO & NC for switches) must be clearly noted on the data sheet that will be used to create the library decal. 2 & 3 pin devices with alphabetical Pin Names are as follows:

DIODES CATHODE = K

ANODE = A

TRANSISTORS BASE = B

EMITTER = E

COLLECTOR = C

POWER FETS SOURCE = S

GATE = G

DRAIN = D

POTENTIOMETERS CW = 1

WIPER = 2

CCW = 3

CAPACITORS & POSITIVE = 1

BATTERIES NEGATIVE = 2

NETCHECK TOOLS NETLIST FORMATS

PADS PERFORM CADNETIX SCI-CARDS

*PADS2000* NET LIST NET LIST

*NET*

*SIG CLK NODENAME CLK $ NODENAME CLK $

U1.1 C1.1 U1 1 C1 1 U1 1 C1 1

*SIG GND NODENAME GND $ NODENAME GND $

C1.2 U1.7 C1 2 U1 7 C1 2 U1 7

*SIG VCC NODENAME VCC $ NODENAME VCC $

R1.2 U1.14 R1 2 U1 14 R1 2 U1 14

*END* EOS EOS

P-CAD .WRL COMPUTERVISION AUTO-PCB

CLK U1-1 C1-1 0001 CLK U1-1 C1-1 1 CLK U1-1 C1-1

GND C1-2 U1-7 0002 GND C1-2 U1-7 2 GND C1-2 U1-7

VCC R1-2 U1-14 0003 VCC R1-2 U1-14 VCC R1-2 U1-14

P-CAD .NLT CALAY MENTOR GRAPHICS

NETS /CLK U1(1) C1(1) NET ‘CLK’ U1-1 C1-1

/GND C1(2) U1(7) NET ‘GND’ C1-2 U1-7

CLK = U1/1 C1/1 /VCC R1(2) U1(14) NET ‘VCC’ R1-2 U1-14

GND = C1/2 U1/7

VCC = R1/2 U1/14

TANGO RECAL REDAC VIEWLOGIC

( .PCB CLK U1 1

CLK .CON CLK C1 1

U1,1 .COD 2 GND C1 2

C1,1 GND U1 7

) REM CLK VCC R1 2

( U1 1 C1 1 VCC U1 14

GND REM GND

C1,2 C1 2 U1 2

U1,7 REM VCC

) R1 2 U14

( .EOD

VCC

R1,2

U1,14

)

NETCHECK TOOLS INTEGRITY CHECK

The following is a step by step procedure to check a netlist for errors or problems and to automatically convert long alphabetical pin names to a single character.

1. C:\> CD NETCHECK <CR>

2. C:\NETCHECK> COPY A:FILENAME.NET <CR>

3. C:\NETCHECK> EDIT SUB.DAT <CR>

Remove all unwanted items: ANODE A

CATHODE K

COLLECTOR C

BASE B

EMITTER E

SOURCE S

GATE G

DRAIN D

(also removes 1 pin nets)

When you are finished updating SUB.DAT

FILE / SAVE AS… - FILENAME.SUB

NOTE: Step 3 can be skipped if there are no long alphabetical pin names in the netlist.

5. C:\NETCHECK> NC2 <CR>

6. Move cursor down to: Check (N)et for errors/problems <CR>

7. Fill in the Integrity Check Menu as follows:

Input NET Filename: FILENAME.NET

Input NET Format: PADS Note: <CR> Toggles options

Output NET Filename: FILENAME.ASC

Report Filename: FILENAME.RPT (error file)

Substitute Filename: FILENAME.SUB

Setup Check Options <CR> Toggle the different options by <CR>

Perform Check <CR>

8. F10 - Return to main menu <CR>

9. (Q)uit NetCheck Tools <CR>

NETCHECK TOOLS NETLIST CONVERSION

The following is a step by step procedure to convert a netlist from one CAD Format to a different Format. (note: first remove Parts list if included in net list)

1. C:\> CD NETCHECK <CR>

2. C:\NETCHECK> COPY A:FILENAME.NET <CR>

3. C:\NETCHECK> NC2 <CR>

4. Move cursor down to: (C)onvert NET to different format <CR>

5. Fill in the Convert NET Menu as follows:

Input NET Filename: FILENAME.NET

Input NET Format: TANGO Note: <CR> Toggles options

Output NET Filename: FILENAME.ASC

Output NET Format: PADS Note: <CR> Toggles options

Report Filename: FILENAME.RPT

Perform Conversion <CR>

6. F10 - Return to main menu <CR>

7. (Q)uit NetCheck Tools <CR>

8. C:\NETCHECK> EDIT FILENAME.ASC <CR>

Add to the top of the Netlist: *PADS2000*

*NET*

Add to the bottom of the Netlist: *END*

9. FILE / SAVE

10. C:\NETCHECK> COPY FILENAME.ASC A: <CR>

NETCHECK TOOLS NETLIST COMPARISON

The following is a step by step procedure to compare two netlists for differences.

1. C:\> CD NETCHECK <CR>

2. C:\NETCHECK> COPY A:FILENAME.NET <CR>

3. C:\NETCHECK> NC2 <CR>

4. Move cursor down to: Co(M)pare two NETs for differences <CR>

5. Fill in the Compare two NETs Menu as follows:

First NET Filename: FILENAME.NET (usually the schematic net list)

First NET Format: PADS Note: <CR> Toggles options

Second NET Filename: FILENAME.ASC

Second NET Format: PADS Note: <CR> Toggles options

Threshold Value: 1

Report Filename: FILENAME.RPT

Perform Comparison <CR>

6. F10 - Return to main menu <CR>

7. (Q)uit NetCheck Tools <CR>

8. C:\NETCHECK> PRINT FILENAME.RPT <CR>

Note: The FILENAME.RPT file is the list of differences between the two netlists, if there are any.

Continue making corrections and rerun this program until .rpt file states

“no errors found”.

NETCHECK TOOLS CREATE A PADS ECO FILE

The following is a step by step procedure to create a PADS ECO file.

1. C:\> CD NETCHECK <CR>

2. C:\NETCHECK> COPY A:FILENAME.NET <CR> (Netlist from Schematic)

3. C:\NETCHECK> COPY A:FILENAME.ASC <CR> (Netlist from PADS database)

4. C:\NETCHECK> NETIT ON <CR>

5. C:\NETCHECK> ECOGEN FILENAME.ECO <CR>

6. C:\NETCHECK> NC2 <CR>

7. Move cursor down to: Co(M)pare two NETs for differences <CR>

8. Fill in the Compare two NETs Menu as follows:

First NET Filename: FILENAME.NET

First NET Format: PADS Note: <CR> Toggles options

Second NET Filename: FILENAME.ASC

Second NET Format: PADS Note: <CR> Toggles options

Threshold Value: 1

Report Filename: FILENAME.RPT

Perform Comparison <CR>

9. F10 - Return to main menu <CR>

10. (Q)uit NetCheck Tools <CR>

11. Run PADS PowerPCB

12. Select File/Import

13. Select IMPORT ECO

14. Type: C:\NETCHECK\FILENAME.ECO then pick [OK]

15. Repeat steps 1-10 to make sure there are no errors.

5.7

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3 ECAC25(SP)WP2 TWENTYFIFTH PLENARY SESSION (SPECIAL) OF
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