kpicott@alias.UUCP (Socrates) (09/17/90)
Can anyone explain in a nutshell what the differences between the 2090A and the 2091 are? (My dealer says "Oh yes, big BIIIIG differences. Lotsa differences. Yes definitely.". -- Not very useful.) I am having some timing problems on my hard disk that seem to get a little better when I remove my memory board using the 2090A. I am wondering if the remainder of my problems might go away by up(?)grading to the 2091. So, I am trying to find out exactly what I would be gaining by moving to the 2091. -- Kevin Picott aka Socrates aka kpicott%alias@csri.toronto.edu Alias Research Inc. 110 Richmond St. E. Toronto, Ontario... M5C 1P1 (416) 362-9181 x336
hclausen@adspdk.CBMNET (Henrik Clausen) (10/07/90)
In article <kpicott.653574148@sapporo>, Socrates writes: > Can anyone explain in a nutshell what the differences between the 2090A and > the 2091 are? (My dealer says "Oh yes, big BIIIIG differences. Lotsa > differences. Yes definitely.". -- Not very useful.) Well, he's right. All new design. And it's a hardcard. To put it briefly: The DMA contention problem is gone. There might still be delays, but no fake R/W errors. SCSI-direct is implemented. Means you can hook your tape streamer to it, and other nice devices. SCSI is a lot faster. I'm getting reads of 763K/second. The old 2090 was a very early SCSI design. 2091 is a fresh one, and the drive is a Quantum. I wonder why they kept such a similar name on the controller? > remainder of my problems might go away by up(?)grading to the 2091. Quite likely, but I can't answer that for sure. The 2091 is a design that will keep you happy for years to come. Have a nice day -Henrik | Henrik Clausen, Graffiti Data (Fido: 2:230/22.33) | | ...{pyramid|rutgers}!cbmvax!cbmehq!adspdk!hclausen | \__"Do not accept the heart that is the slave to reason" - Qawwali trad__/