I don't know the originator for these drivers, but I trie them out with Win95OSR1a and WINNT4.0 and they work fine.
Unfortunately the drivers of nt4-8019(200).zip on Driverguide doesn't work with WINNT4.0 !
The following files are found inside the driver download file.
|DRIVER/WINNT/PNPNT.SYS||27.6 KB||1 Sep 1998|
|DRIVER/WINNT/README.1ST||112 bytes||1 Sep 1998|
|DRIVER/OEMSETUP.INF||35.0 KB||1 Sep 1998|
|DRIVER/NT40.EXE||37.9 KB||25 Oct 2001|
|utilities/rtl8019as1.PDF||19.6 KB||20 Nov 2000|
|utilities/rtl8019as2.PDF||11.6 KB||20 Nov 2000|
|utilities/8019as(2in1).exe||79.5 KB||25 Oct 2001|
|utilities/PCI.PDF||10.0 KB||20 Nov 2000|
|utilities/RSET8019.EXE||140.6 KB||25 Oct 2001|
|utilities/8019as(2in1).dsn||154.6 KB||31 Aug 1999|