Configuring Verilog

Many parts of VITO can be customized. The following parameters may be adjusted:

Files:

The first four are only created when the `-d' option is used.

OUTFILE: name of file for implicit block statements
STMTFILE: name of file for non-implicit block statements
ARCHFILE: name of file for architecture statements
TAILFILE: name of file for endmodule statement
CFFILE: name of file for output from vito. An empty string causes output to go to standard output with no file created.

Identifier Prefixes:

These are used when creating new identifiers. They consist of prefix strings which are prepended to existing identifiers.

WIREPRE: prefix for wire names
TWIREPRE: prefix for true path wire names
TEMPPRE: prefix for temporary wires
QUALPRE: prefix for qualifier wire
NEWWIREPRE: prefix for new wire
FFOUTPUT: prefix for flop-flop output reg

Identifiers

These identifiers are expected to match the source code exactly and/or will be output exactly as specified.

RESET: name of reset signal
CLOCK: name of clock signal
ATEVENT: string for @() events
RESETEDGE: event for causing reset
RESETCOND: condition for performing reset

The file '.vitorc' in the UNIX version or the file 'vito.rc' in the DOS version contain the customization parameters. This is an ordinary text file with the following specifications:

Parameters are entered one per line in the following order. It may be omitted, in which case VITO assumes the indicated predefined parameters.

	Parameter	Default value
	-----------------------------
        OUTFILE		v.out
        STMTFILE 	v.stmt
        ARCHFILE 	v.arch
        CFFILE		(empty string)
        WIREPRE		s_
        TWIREPRE	sT_
        TEMPPRE		tmp_
        FFMODULE	(unused but reserved for future use)
        FFOUTPUT 	ff_
        QUALPRE		qual_
        RESET		reset
        CLOCK		sysclk
        ATEVENT		@(posedge sysclk)
        NEWWIREPRE	new_
        RESETEDGE	@(posedge sysclk or posedge reset)
        RESETCOND	reset
        TAILFILE 	v.tail

If an insufficient number of lines is given, defaults are used for any unspecified parameters.
Comments may be included. These start with the '%' symbol in the first column and continue to the end of the line.