Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!mips!atha!aupair.cs.athabascau.ca!aunro!ersys!kevind From: ersys!kevind@nro.cs.athabascau.ca (Kevin Dackiw) Newsgroups: comp.sys.amiga.datacomm Subject: Re: ASDG Dual Serial Board Message-ID: Date: 14 Apr 91 11:14:58 GMT References: Organization: Edmonton Remote Systems, Edmonton, AB, Canada Lines: 49 greg@travis.cica.indiana.edu (Gregory TRAVIS) writes: > ersys!kevind@nro.cs.athabascau.ca (Kevin Dackiw) writes: > > >My thoroughput via the DSB seems to be somewhat slower than through the > >Amiga serial port, though I almost never now get an error when I use > >the modem (14.4k, v.42 HST)...why is this? Bus contention? > > > >Also, the DSB seems to be a system hog! Is this a hardware fault, or a > >device driver/handler fault? Is there a public upgrade for the software > >that comes with the DSB? > > > > Agreed 100% I posted an article a long time ago, well a couple of > months ago, addressing this question. My DSB, even with the latest > drivers, seems to have about two times the overhead per port that the > built-in Amiga serial port has. > > I don't have the times handy, but I recall that it took about 30 seconds > to load ProPage 1.3 while a ZModem transfer (inbound to the Amiga) at 9600 > baud was going on. With the same setup going through the Amiga's native > port ProPage loaded in about 15 seconds. And the ASDG port managed to > rack up several transfer errors while the Amiga port reported none. > > Of course I flushed all system buffers before I began either test. Actually, > I rebooted the system in each case just before starting up VLT and > the download. So these were well controlled experiments. > > Outbound I could not find any performance differences between the ASDG board > and the Amiga's native port. > > Anyone know why? ASDG has always made nice stuff in the past... > > > -- > Gregory R. Travis Indiana University, Bloomington IN 47405 > greg@cica.indiana.edu Center for Innovative Computer Applications > This signature intentionally left blank. Greg, I've been told that ASDG has made new drivers for the board; any problems with speed *theoretically* disappear, according to what I have heard...I'll definately check into this avenue by contacting ASDG directly.... Can anyone else comment on this? Kevin Dackiw ersys!kevind@nro.cs.athabascau.ca Edmonton Remote Systems: Serving Northern Alberta since 1982