eldo_user

Simulator Compatibility
Troubleshooting the Spectre to Eldo Flow
ERROR 208: In file "./t1.sp" line 5:
+ OBJECT "AOP": Unrecognized character or word A
In this example, Eldo considers that “Aresfoo” in line 5 is requesting an aop (opamp).
• The Spectre file includes the SPICE file.
If you have the following top Spectre file, where t1.cir should be the
spice_command_file:
simulator lang=spectre
subckt foo a b
ends
Aresfoo a b resistor r=2k
subckt bar a b
Aresbar a b resistor r=1k
myInstance a b foo
ends
anotherInstance 1 0 bar
simulator lang=spice
.include "t1.cir"
The Spectre to Eldo converter does not understand the .INCLUDE statement and so will
not change its path nor copy the t1.cir file into the .t1.sp_dir folder. Eldo might find it,
and proceed with the include, however it could also fail to find it and raise an error
message.
Moreover if the file is both included and specified using the -i command line option, you
will have duplicate definitions, as the file is effectively included twice.
Spectre does not understand SPICE syntax, which means only a full Spectre design can
be used. However spectre_file could contain subcircuit definitions and Spectre library
inclusion, and have its full design in the spice_command_file which may include some
SPICE libraries.
To summarize, from one side a full Spectre tree is allowed and from the other a full
SPICE tree. This enables you to specify complex designs mixing both SPICE and
Spectre.
Eldo® User's Manual, 15.3 187