[SI-LIST] Re: Historical question: IBIS & Quad TLC?

For those on the list who are fans of hooked on 
phonics or Ex NBC Thurs night comedies you might 
have missed the clever naming.  The DEC tool, if 
I remember properly was pronounced 'Sane', hence 
their interactive tool, was 'Insane'.

Engineers are such funny and clever people. No wonder
they always get the girl.......obligatory 8-)  ;-)

best regards,

Michael Greim

-----Original Message-----
From: Ingraham, Andrew [mailto:Andrew.Ingraham@xxxxxxxxxx]
Sent: Thursday, November 01, 2001 10:00 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Historical question: IBIS & Quad TLC?



My introduction to DEC's in-house IV curve based simulation program
(SEIN) was in about 1986.  Soon after, the interactive version (InSein)
was developed.  We nicknamed it TurboSpice.  You could draw a net, add
drivers and receivers, and it would pop up waveforms on your screen in
less than a second.

We used SEIN as a quick first check on all board nets.  It would
simulate every single net on an Alpha CPU motherboard, complete with
cache, memory SIMMs/DIMMs, and plug-in cards (PCI, ISA/EISA) in less
than half an hour.  It would generate and list all the wire delays, and
flag any overshoot problems.

Of course it was not considered as accurate as SPICE.  But it was great
as a quick "filter" to see where the problem nets might be, and then you
could take those and investigate further with SPICE.  And the speed made
it good for doing "what-ifs" on your entire board, or looking at bus
loading effects.

Andy


---
Bob Haller wrote:

>   Back at DEC (Digital) in the late 70's we had a tool call SEIN
...

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