Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.csd.uwm.edu!gem.mps.ohio-state.edu!ginosko!usc!orion.cf.uci.edu!uci-ics!zardoz!tgate!ka3ovk!drilex!axiom!linus!alliant!merk!xylogics!cloud9!jjmhome!cpoint!frog!jr From: jr@frog.UUCP (John Richardson) Newsgroups: comp.unix.i386 Subject: Re: Ethernet boards for ISC 386/ix Summary: I do not have this problem Message-ID: <1769@frog.UUCP> Date: 11 Aug 89 18:49:00 GMT References: <1423@hydra.gatech.EDU> <201@scooter.PLSN.CA.US> Distribution: usa Organization: Charles River Data Systems, Framingham MA Lines: 23 In article <201@scooter.PLSN.CA.US>, carlson@scooter.PLSN.CA.US (Joe Carlson) writes: > In article <1423@hydra.gatech.EDU>, gb7@prism.gatech.EDU (Joe Bradley) writes: > > > > I just bought a Western Digital EtherCard Plus (WD 8003e) to use with > > ISC 386/ix. Unfortunately, the WD manual says it only works in machines > > with clock rates of 16 MHz or less. I have a Dell 310 running at 20 > > MHz. I thought I would give it a try anyway. Not surpisingly, it > > doesn't work. ........ > > Hmmm... I cannot find any such limitation mentioned in the WD8003E > docs that I have (I have heard they will not work in machines that run the > AT bus at .gt. 8Mhz). I also have 2 Dell 310's running SCO XENIX and various > TCP/IP packages all with WD8003E cards... all working just fine. I use a WD8003-EBT (32K) board in a 33 Mhz motherboard with out any problems. I am running a version of our real time UNIX and have taken care to insert delays between access to the control registers on the NIC chip to give it time to recover. Another issue is that some motherboards will not pay attention to the WAIT line, and if this is the case, an access while the NIC chip is DMA'ing to local on board memory will not be held off properly. JR