Rob Duff's AWK is built with Borland TurboC and TASM.

Source:
<ftp://ftp.oldskool.org/pub/simtelnet/msdos/txtutl/awk320.zip>
<ftp://ftp.oldskool.org/pub/simtelnet/msdos/txtutl/awk320sr.zip>


awkrev.zip has reviews of MKS, Polytron, & Rob Duff's AWK.

Source:
<ftp://ftp.math.utah.edu/pub/ibmpc/awkrev.arc>