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- Path: sparky!uunet!psinntp!ncrlnk!ncr-mpd!Mike.McManus
- From: Mike.McManus@FtCollins.NCR.com (Mike McManus)
- Newsgroups: comp.lsi.cad
- Subject: Re: Question about Lsim simulator of GDT
- Message-ID: <MIKE.MCMANUS.92Aug11222521@mustang.FtCollins.NCR.com>
- Date: 11 Aug 92 21:25:21 GMT
- References: <TRA.92Aug8165157@naakka.cs.tut.fi>
- Sender: uucp@ncr-mpd.FtCollins.NCR.COM
- Organization: NCR Microelectronic Products, Ft. Collins, CO
- Lines: 26
- In-reply-to: tra@cs.tut.fi's message of 8 Aug 92 14:51:57 GMT
-
- In article <TRA.92Aug8165157@naakka.cs.tut.fi> tra@cs.tut.fi (Tommi Raita-aho) writes:
- > In switch simulation everything works fine, command: "high probe" sets
- > probe to 3.0 volts. But in adept simulation, the same command sets
- > probe to default value 5.0 volts, although Vdd is 3.0 volts.
-
- I've seen the same problem. Our fix is to use the pwl command. If you want to
- get fancy, build a pair of aliases:
-
- alias hi "pwl $1 3.0,0"
- alias lo "pwl $1 0.0,0"
-
- In this way, you can even have a non-zero rise/fall times in your sim. The
- aliases can be used just like the built-in high/low functions (hi probeA; lo
- probeB, etc.). BTW, be sure to change the Logic_High value when using VDD=3V
- in switch level. Good luck!
-
- --
- Disclaimer: All spelling and/or grammar in this document are guaranteed to be
- correct; any exseptions is the is wurk uv intter-net deemuns,.
-
- Mike McManus Mike.McManus@FtCollinsCo.NCR.COM, or
- NCR Microelectronics ncr-mpd!mikemc@ncr-sd.sandiego.ncr.com, or
- 2001 Danfield Ct. uunet!ncrlnk!ncr-mpd!propwash!mustang!mikemc
- Ft. Collins, Colorado
- (303) 223-5100 Ext. 378
-
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