Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!bellcore!texbell!killer!elg From: elg@killer.DALLAS.TX.US (Eric Green) Newsgroups: comp.sys.amiga Subject: Re: DH0: and steady drive light Message-ID: <8259@killer.DALLAS.TX.US> Date: 2 Jun 89 05:46:02 GMT References: <668@lakesys.UUCP> Organization: The Unix(R) Connection, Dallas, Texas Lines: 44 in article <668@lakesys.UUCP>, mikes@lakesys.UUCP (Mike Shawaluk) says: > In article <16530@louie.udel.EDU> PROVERO@wsmr-simtel20.army.mil (Josh Rovero) writes: >>Eric Green mentioned a problem with his A500, >>subsystem 500, CLtd Chronos SCSI controller and seagate st???N: ST157N. And I have some more info about that problem: My dealer called C Ltd., who said, "Try it in an A2000 and call us back." I did. I brought my 500 setup over there, put it into his 2000, it did the same thing. Swapped drive cables with his hard drive, still did the same thing. C Ltd. told him "Hmm, maybe interrupt propogation trouble on the board, set the disable_irq flag and we'll ship a replacement." disable_irq turns off all interrupts and multitasking while a disk operation is taking place. This is sort of a "hard drive nasty" mode... even glitches the screen occasionally, a'la vintage SupraDrive. However, the green-light-specials have stopped. The only nasty thing is that I can't use a modem while accessing the hard drive with disable_irq set... it turns off the RS232 port. Bummer. The plus side is that it improves performance. My top-end diskperf has risen to 552K write, 370K read, awefully close to the 600K/second that C Ltd. claims is the limit of the Kronus (or Kronos -- it's spelled both ways at different places in their documentation!). Considering that they only claimed 500K/sec with my combination, I'm satisfied. My first choice, the Microbotics Hardframe, won't work in a subsystem, alas. >>4000A, and Seagate ST-225 (st-506). I also experience the steady green drive >>light on occasion, and have to wonder if it is not a feature or bug of the >>CLtd interfaces running with an A500. Try disable_irq. If it stops, it's probably a bug in their software and we can all scream at C Ltd. > Well, here's another one for the record; my setup is a Supra 4x4 on an A1000, > with a Seagate ST277N. The lockup is most likely to occur during heavy disk Hmm, on the other hand, maybe it ISN'T the C Ltd.? Or do these folks crib from each other? -- Eric Lee Green P.O. Box 92191, Lafayette, LA 70509 ..!{ames,decwrl,mit-eddie,osu-cis}!killer!elg (318)989-9849 "I have seen or heard 'designer of the 68000' attached to so many names that I can only guess that the 68000 was produced by Cecil B. DeMille." -- Bcase