eldo_user

Simulator Compatibility
Netlist in Compat Mode
Parameters
Multiple assignment of parameters which can be overwritten sequentially is allowed.
In model instantiations, Eldo checks whether there is a .MODEL with the same name as the
string after the nodes in a model declaration. If not, it looks for a parameter name.
In .PARAM statements, LOT and DEV are not treated as keywords, however LOT/GAUSS,
DEV/GAUSS, LOT/, and DEV/ are.
Quotes
Double quotes are treated as single quotes. (In standard Eldo mode, double quotes are used to
specify a parameter string.) Use option QUOTSTR to treat double quotes as a parameter string
delimiter.
Order of Analyses
Analyses are performed in the order specified in the netlist. The order in which analyses are
performed can then differ from the original Eldo order, and there can be multiple analyses of the
same type to be run sequentially. In addition, .PRINT/.PLOT/.EXTRACT/.MEAS commands
are seen only by the preceding command. Example:
.tran 1n 10n
.print tran v(1)
.tran 1n 50n
.print tran v(2)
.end
In compat mode, the first .tran command forces Eldo to do a transient simulation between 0 and
10n. Only v(1) will be displayed. The second .tran command forces Eldo to do a transient
simulation between 0 and 50n. Only v(2) will be displayed for that simulation.
Order of Analyses—AC in the Middle of a .TRAN
AC in the middle of transient is handled with respect to the compat mode ordering rule (as
described above). Whenever a .AC command, a .TRAN command, and a .OP command
containing time specifications are specified in the .cir file, then the results will be:
• .ac followed by .tran
AC will be performed during the transient because .ac appears before .tran
• .tran followed by .ac
AC will be performed after the transient, and not inside it. A warning is issued:
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Eldo® User's Manual, 15.3