creating a netlist

In Allegro the File>Export>Netlist w/Properties... will generate ASCII netlist.txt, which is in the Allegro native 'Telesis' format

You can edit the netlist file & import it back into Allegro using the File>Import>Logic/Netlist... 'Other' tab

The netlist format is documented in 'Allegro® User Guide: Transferring Logic Design Data' chapter 'Creating, Comparing, and Updating Databases'

thank u for ur response, david.

i do understand the netlist format but it takes a half day to create a netlist from the netlist our customers send us.

our customers usually send us a netlist like the one we get on a symbol pin report as shown below.

from this symbol pin report, is there a skill or some easy method to create a netlist in the format that can be imported in the board design?

regards

masa

thank u for ur response, david.

i do understand the netlist format but it takes a half day to create a netlist from the netlist our customers send us.

our customers usually send us a netlist like the one we get on a symbol pin report as shown below.

from this symbol pin report, is there a skill or some easy method to create a netlist in the format that can be imported in the board design?

regards

masa

Are you working on a board or a package? The screenshot looks like a typical CSV netlist that you can import into a package design through APD+ and the file - import - netlist text in wizard. The format is similar to a CSV file for a die, package, or other component. 

Since many package designs are still done without a front end schematic for the logic, this is a popular format. For a board design, a schematic is almost always available, which is why the format isn’t utilized in that flow. 

if you’re bringing the netlist into a board design, the schematic tool you’re using in the front end may support reading this format. Where is it coming from out of your customer? Do they have other netlist formats available?

thank u for ur response, tyler.

i am working on apd and do not use schematic 

please let me try the netlist in wizard

it looks like the netlist in wizard takes txt files.

regards

masa

 masamasa 

it seem you same my work , do not use schematic and package only.

Let's talk together if you're having trouble

HoangKhoi.

Try opening the customer netlist file in Excel.

Then, manipulate the cells and save the spread sheet as a text file.

The final (text) format would look something like this:

VSS ; BGA.A3

VSS ; BGA.A4

I use Excel to convert a customer's placement file from English to Metric. 

The symbol pin report you showed appears to be created from within Allegro/APD, which is now HTML based so it's almost impossible to parse ( Thanks Cadance... )

Import the file into Excel as a comma separated file & then save as a csv file ( which is similar to the report -v spn file format )

Below is an example of running the skill code I wrote this morning to read the csv file to assign the nets:

skill load "csv_net_import.ils"
variable csv_net_import redefined
Autosave time limits are: 5 to 300 minutes
t
skill csv_net_import
Loaded existing device file 'C:\Temp\devices.dml'
Finished loading SigNoise device libraries
640 lines read, 563 net assignments made
t

The skill code is shown below:

procedure(csv_net_import()
let((FileName inport DataLine DataList RefDes PinTxt NetTxt Cmp Pin Net Status LineCnt Assigned)
(LineCnt = 0)
(Assigned = 0)
(FileName = axlDMFileBrowse( nil nil ?optFilters " files(*.csv)|*.csv|"))
if(( stringp(FileName) && (isFile(FileName) == t)) then
(inport = infile(FileName))
(axlClearSelSet)
while(gets(DataLine inport)
(LineCnt++)
(DataList=parseString(DataLine ",\n\r"))
(RefDes = car(DataList))
(PinTxt = cadr(DataList))
;(Net = cadr(Reverse(DataList)))
(NetTxt = nth(7 DataList))
when(RefDes && PinTxt && NetTxt
(Cmp = car(axlSelectByName("COMPONENT" RefDes)))
when(Cmp
(Pin = car(axlSelectByName("PIN" (strcat RefDes "." PinTxt))))
when(Pin
(Net = axlDBCreateNet(NetTxt))
(Status = axlDBAssignNet(Pin Net nil t))
when(Status
(Assigned++)
)
)
)
)
(axlClearSelSet)
)
close(inport)
drain()
axlMsgPut("%d lines read, %d net assignments made" LineCnt Assigned)
else
axlMsgPut("No valid file selected")
)
)
)