cc1@CS.UCLA.EDU (Michael Gersten) (05/08/87)
Is it possible to get a SCSI interface for the 16? (NOT 6000, a 16). I just freed up a slot with a one meg upgrade, and want something that I can do significant expanding. So, A. Is there a SCSI board, and B. Does it support all the features of SCSI (in particular, sharing a device among several processors.) Michael Gersten The opinions represented here are a result of being educated at a school that discriminates againts roosters. Only the birds are responSundo.3
rab@rabtrs.UUCP (05/08/87)
> Is it possible to get a SCSI interface for the 16? (NOT 6000, a 16). I just > freed up a slot with a one meg upgrade, and want something that I can > do significant expanding. So, > A. Is there a SCSI board, and > B. Does it support all the features of SCSI (in particular, sharing a device > among several processors.) > Michael Gersten Contact Bob Snapp at 513-891-4496. He has taken the SCSI Board that Tandy sells to drive their Disk Cartridge System (aka Bernoulli box) and is running VERY large SCSI disk drives. It should run on a 16 or 6000 as long as you have the slot and are running XENIX-68000 03.01.xx. Bob is an old friend, please mention my name. Rich --- "Adversity is the crucible from which greatness is forged." - Ken Baker ____ ____ ___ / _ \ / _ \ / _ \ Richard A. Bilancia / / \_/ / / \_/ _ \ \\/ Computer Guidance & Support / / / / _ | | \ \ P. O. Box 620127 \ \ _ \ \ | \ | + | \ \ Littleton, Colorado 80162 \ \_/ \ \ \_| \ |_| /\_| \ voice: (303) 973-4035 \____/ \____/ \____/ ihnp4!sys1!bilanc!rab Multi-User Accounting Solutions attmail!bilanc!rab
uhclem@trsvax.UUCP (05/16/87)
<restore "madadv.sav">$ I miss MDL... >A. Is there a SCSI board, and Yes, the Disk Cartridge System uses SCSI as the method of communication to the host. >B. Does it support all the features of SCSI (in particular, sharing a device > among several processors.) No. It does not support arbitration at all (the feature that allows multiple hosts. It is also a somewhat dumb adapter and does not even get close to the upper transfer rates that SCSI allows. Because of this, the 1000/1010 HD controller can transfer data faster (1.6usec/byte typical) as opposed to this SCSI adapter that rarely can clear 6usec/byte reliably. (Not enough "F" parts, you see...) Since this is a DUMB adapter, software must strobe the various control lines and perform all handshaking and timing. But then "software can do anything", as long as you don't want it doing something else. It can talk to multiple controllers, but that is not supported by Tandy, since the Iomega uses a non-standard command set for SCSI operations (as well as a set that changes with each new drive generation) and the distributed driver is geared toward making the Iomegas run well. <This information is provided by an individual and is not nor should be construed as being provided by Radio Shack or Tandy Corp. Radio Shack/Tandy Corp has no obligation to support the information provided in any way. Just remember, Bob did not create the universe, despite what he says. Many more people think Bill Gates did. And the 6000 is still faster than the 3000. But some people don't check to make sure that /usr/dict/words is the same size on both machines before performing their benchmarks based on that file. (The 6000 version has 2,357 more characters in it as distributed. Might make grep run a bit longer.) Good thing it wasn't a 386; it might fuse.> "Thank you, Uh Clem." Frank Durda IV @ <trsvax!uhclem> ...decvax!microsoft!trsvax!uhclem ...convex!infoswx!trsvax!uhclem