TLI Interface for Sys V Rel 3.0 : select (BSD) equivalent ?

[C. V. R. Murthy]

Hello,
I am looking for ideas as to how to implement BSD equivalent select system call
on System V environment.  I am trying to translate  a piece of code (written
for 4.2 BSD) in TLI ineterface.
Any suggestions will be apprecicated,
Thanks,
Murthy.