#Macspice iv full#
#Macspice iv code#

Itl4В = n Resets the transient analysis timepoint iteration limit. Itl3В = n Resets the lower transient analysis iteration limit. Itl2В = n Resets the DC transfer curve (including the gmin- and source-stepping algorithms) iteration limit. GminstepsВ =В 1 invokes an adaptive algorithm appropriate for cases when convergence is problematic. GminstepsВ = n Sets number of Gmin steps to be attempted when seeking a solution. GminВ = x Resets the value of gmin, the minimum conductance allowed by the program.

defadВ = x Resets the value for MOS drain diffusion area the default is 0.0.ДefasВ = x Resets the value for MOS source diffusion area the default is 0.0.ДeflВ = x Resets the value for MOS channel length the default is 100.0 micrometer.ДefwВ = x Resets the value for MOS channel width the default is 100.0 micrometer. It is recommended that chgtol is set to C minГ— vntol where C min is the smallest capacitor of interest.

#Macspice iv full#

If device conditions have changed little since the last full evaluation - it helps speed, but may occasionally cause convergenceД¬hgtolВ = x Resets the charge tolerance (in coulomb) of the program.

#Macspice iv code#

The default value is 1 picoamp.Д«admos3 Use the older version of the MOS3 model with the 'kappa' discontinuity.Д«ypassВ = x Controls whether bypass code is, or is not, used when evaluating device models. In the following table, ' x' and ' n' represent positive real and integer values respectively.ДЄbstolВ = x Resets the absolute current error tolerance of the program. Any combination of theДЇollowing options may be included, in any order. OPTIONS line and the format of the 'set' command. See the following section on the interactive command interpreter for the parameters which Options specified to Nutmeg via the ' set'Д¬ommand are also passed on to SpiceВ 3 as if specified on a. Additional options for Nutmeg may be specified as well and take effect The options line allows the user to reset program control and user options for specific The interactive front-end) or via the '.OPTIONS' line: Via the set command (described later in the section on Various parameters of the simulations available in SpiceВ 3 can be altered to control theДЄccuracy, speed, or default values for some devices. If a rawfile is not specified, then output plots (in 'line-printer' form) and tables can be The rawfile may be read by either the interactive mode of SpiceВ 3 or by nutmeg see theД«elow) may be used to record the value of internal device variables (see Appendix B). The -r rawfile option is given then all data generated is written to a SpiceВ 3 rawfile. CONTROL' linesД®xists see the section on the interactive command interpreter). The rawfile may be read and subsequently analysed by using the MacSpice load command.Д«atch mode is entered when either the -b option is given or when the default input source isД®tc.) are immediately executed (unless '. In batch mode, the analyses specified by the control lines in the input If this is given a rawfile argument then all data generated is written to a SpiceВ 3 rawfile. Specifying analyses and plots (or tables) in the input file is useful for batchД¬ommand.

Parallel commands exist in the interactive command interpreter (detailed in The following command lines are for specifying analyses or plots within the circuit descriptionДЇile. The circuit, as opposed to control the simulator, are exceptions to this rule. Where such backwards compatibility is not required, useД¬ommands such as. Most of the commands described in this section are deprecated but are retained toДЄllow MacSpice to run Spice 2 'batch-mode' netlists. MacSpice User's Guide 4 ANALYSES AND OUTPUT CONTROL