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LSIM Interface
INVOCATION:
SIMULATOR lsim ;
The VGEN interface for LSIM creates an object code file. This file provides fields for both input pin states and
expected output states, and hence pins may be declared as INPUTS, OUTPUTS or BIDIRECTS pintypes in your
VGEN source file. BIDIRECTS will be listed in the LSIM pinlist twice, once under "INPUT" and once under
"OUTPUT" (the .o suffix will be dropped). Although VGEN does not allow you to include signal parameters in the
signal list (such as to=20 - a timing offset), the equivalent can be accomplished using the PINTYPE declarative in
VGEN, which will generate the individual vectors with this timing. Another alternative would be to create your
own header with desired pin names and parameters using the DEFINE_HEADER command in your VGEN source
file.
EXAMPLE OF VECTOR FILE GENERATED:
CODEFILE;
INPUTS pin1, pin2, pin3, bus[7:0];
OUTPUTS out1;
CODING(ROM)
@0
<00000000000 >.;
@50 <11000000000 >0;
@125 <01011100001 >1;
etc.
VGEN FEATURES SUPPORTED:
Comments
Header
Busformat
Define_header
Outputs
Bidirects
Sys_clock
Page 12
- NO.
- NO.
- NO.
- YES.
- YES.
- YES.
- NO.
Not allowed in LSIM object file.
Only Binary format.
Replaces everything above CODING(ROM) line.
VGEN Interfaces Guide