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VCD+ (vpd) File Generation
Simulator Run-Time Options
Specific command line options are used to generate VCD+. These
options are used to set the RAM buffer size, provide the VCD+ default
file name, specify the VCD+ file size, ignore file calls, check licenses,
and control what information is stored. This section describes the
following commands:
• +vpdbufsize to control RAM Buffer Size
• +vpdfile to set the output file name
• +vpdfilesize to control maximum file size
• +vpdignore to ignore $vcdplus calls in code
• +vpddrivers to store driver information
• +vpdports to store port information
• +vpdnocompress to bypass data compression
+vpdbufsize to control RAM Buffer Size
To gain efficiency, VCD+ uses an internal buffer to store value
changes before saving them on disk. The +vpdbufsize command
modifies the size of that internal buffer. The minimum size allowed is
what is required to share two value changes per signal.
Syntax:
+vpdbufsize+nn
Where nn is buffer size in megabytes (default is the size required to
store 15 value changes for each signal but not less than 2 megabytes).
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