sllu@jenny.isi.edu (Shih-Lien Lu) (11/21/89)
I need to understand some SILOS input commands. Would any kind netter help me out? Thanks in advance. Please explain to me the following commands: .INIT M0101BXNORNG=1 .SYMBOL R0=- R*=# R1=+ .CLKIN .CLK 0 S1 500 S0 3000 S1 3500 S0 .REP 500 Shih-Lien
abair@turbinia.oakhill.uucp (Alan Bair) (11/21/89)
In article <10648@venera.isi.edu> sllu@jenny.isi.edu (Shih-Lien Lu) writes:
I need to understand some SILOS input commands. Would
any kind netter help me out? Thanks in advance.
Please explain to me the following commands:
.INIT M0101BXNORNG=1
This presets the node M0101BXNORNG to the value 1. This is normally used to
avoid cycles or unstable states at startup.
.SYMBOL R0=- R*=# R1=+
This defines the symbols in the output listings for various combinations of
signal strength and level. R0=-: Resistive low signals display as "-".
Strenghts: S=Supply, D=Drive, R=Resistive, Z=High Impedance
Levels: 0=low, 1=high, *=unknown
Combinding these generates the 12 states that Silos supports.
.CLKIN .CLK 0 S1 500 S0 3000 S1 3500 S0 .REP 500
The signal CLKIN(I don't think that 1st "." should be there) is driven by
the source with the described waveform. The waveform is defined by pairs
of TIME and Strength/Level descriptions. The .REP 500 indicates that the
pattern is to be repeated 500 times. I can't remember if the entire pattern
is repeated or just part of the sequence is used.
Shih-Lien
--
Alan Bair
SPS CAD Logic Simulation & Test
Motorola, Inc. Austin, Texas
...!cs.utexas.edu!oakhill!turbinia!abairdale@oakhill.UUCP (Dale Stevens) (11/22/89)
In article <ABAIR.89Nov21020934@turbinia.oakhill.uucp> abair@turbinia.oakhill.uucp (Alan Bair) writes: > > .CLKIN .CLK 0 S1 500 S0 3000 S1 3500 S0 .REP 500 >The signal CLKIN(I don't think that 1st "." should be there) is driven by >the source with the described waveform. The waveform is defined by pairs >of TIME and Strength/Level descriptions. The .REP 500 indicates that the >pattern is to be repeated 500 times. I can't remember if the entire pattern >is repeated or just part of the sequence is used. > The way I remember it is that the .REP 500 causes the clock to loop back to time 500. -- ---- Dale Stevens. Motorola Inc. cs.utexas.edu!oakhill!apache!dale
del@thrush.semi.harris-atd.com (Don Lewis) (11/22/89)
In article <ABAIR.89Nov21020934@turbinia.oakhill.uucp> abair@turbinia.oakhill.uucp (Alan Bair) writes: > .CLKIN .CLK 0 S1 500 S0 3000 S1 3500 S0 .REP 500 >The signal CLKIN(I don't think that 1st "." should be there) is driven by >the source with the described waveform. The waveform is defined by pairs >of TIME and Strength/Level descriptions. The .REP 500 indicates that the >pattern is to be repeated 500 times. I can't remember if the entire pattern >is repeated or just part of the sequence is used. Not quite. The .REP 500 means that at time 3500 the pattern repeats starting at time 500 in the initial sequence. This repitition continues indefinitely. > >Alan Bair >SPS CAD Logic Simulation & Test >Motorola, Inc. Austin, Texas >...!cs.utexas.edu!oakhill!turbinia!abair -- Don "Truck" Lewis Harris Semiconductor Internet (if you're lucky): del@semi.harris-atd.com PO Box 883 MS 62A-028 Internet (if not): del%thrush@trantor.harris-atd.com Melbourne, FL 32901 UUCP (works): rutgers!soleil!thrush!del Phone: (407) 729-5205