write tssi

The write tssi command records the contents of the default or specified List window in a "TSSI format" file. The file contains simulation data for all HDL items displayed in the List window that can be converted to TSSI format (VHDL signals and Verilog nets). A signal definition file is also generated.

The List window needs to be using symbolic radix in order for write tssi to produce useful output.

Syntax

write tssi

[-window <wname>] <filename>

Arguments

-window <wname>

Specifies an instance of the List window that is not the default. Optional. Otherwise, the default List window is used. Use the view command to change the default window.

<filename>

Specifies the name of the output file where the data is to be written. Required.

Description

"TSSI format" is documented in the Fluence TDS Software System, Chapter 2 of Volume I, Getting Started, R11.1, dated November 15, 1999. In that document, TSSI format is called Standard Events Format (SEF).

If the <filename> has a file extension (e.g., listfile.lst), then the definition file is given the same file name with the extension .def (e.g., listfile.def). The values in the listfile are produced in the same order that they appear in the list window. The directionality is determined from the port type if the item is a port, otherwise it is assumed to be bidirectional (mode INOUT).

Items that can be converted to SEF are VHDL enumerations with 255 or fewer elements and Verilog nets. The enumeration values U, X, 0, 1, Z, W, L, H and - (the enumeration values defined in the IEEE Standard 1164 std_ulogic enumeration) are converted to SEF values according to the table below. Other values are converted to a question mark (?) and cause an error message. Though the write tssi command was developed for use with std_ulogic, any signal which uses only the values defined for std_ulogic (including the VHDL standard type bit) will be converted.

std_ulogic State Characters	SEF State Characters
	Input	Output	Bidirectional
U	N	X	?
X	N	X	?
0	D	L	0
1	U	H	1
Z	Z	T	F
W	N	X	?
L	D	L	0
H	U	H	1
-	N	X	?

Bidirectional logic values are not converted because only the resolved value is available. The Fluence (TSSI) TDS ASCII In Converter and ASCII Out Converter can be used to resolve the directionality of the signal and to determine the proper forcing or expected value on the port. Lowercase values x, z, w, l and h are converted to the same values as the corresponding capitalized values. Any other values will cause an error message to be generated the first time an invalid value is detected on a signal, and the value will be converted to a question mark (?).

Note: The TDS ASCII In Converter and ASCII Out Converter are part of the TDS software from Fluence Technology. ModelSim outputs a vector file, and Fluence's tools determine whether the bidirectional signals are driving or not.

See also

tssi2mti

Model Technology Incorporated Voice: (503) 641-1340 Fax: (503)526-5410 www.model.com sales@model.com