[SI-LIST] IBIS Model Considering Feedback???

I'm working with a vendor on a custom backplane driver that implements 
slew-rate control over PVT for a variety of different backplane loading 
scenarios. They use Spectre for development and we use HSPICE for the 
system model. My ultimate acceptance of the product is based on its 
behavior in my established backplane model (done this twice before at 2 
previous technology nodes). My previous experience was with 
semi-vendor/developers that also used HSPICE. Spectre can't handle the 
transmission-line models used in my system model.
It seems like one possible answer is to develop the buffer in Spectre and 
simulate in HSPICE using an IBIS model. Can IBIS truly model a buffer that 
uses output feedback for slew-rate control? Any other suggestions for how 
I can use my HSPICE model while the vendor used Spectre?

Thanks

Brad Henson

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