Date: Wed, 18 Mar 1998 19:58:52 -0300 (EST) From: Joao Carlos Mendes Luis <jonny@coppe.ufrj.br> To: scsi@FreeBSD.ORG Subject: Re: Internal SCSI ZIP locking bus Message-ID: <199803182258.TAA04824@gaia.coppe.ufrj.br> In-Reply-To: From jonny at "Mar 18, 98 07:52:30 am"
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Answering my own question after some shopping: CABLE ! New cable, new life. Never trust a cable just because it worked some time ago. :) #define quoting(jonny) // // I've been running -stable with a SCSI cdrom and a External ZIP SCSI, // both attached to a 1542CF, without problems. Today I exchanged by // external drive for an internal one, enabled termination on Adaptec // Card, disabled termination in the Internal ZIP, which is in the // middle of SCSI chain, and booted. Both devices are recognized during // boot: // // aha0 at 0x334-0x337 irq 11 drq 6 on isa // (aha0:3:0): "TEAC CD-ROM CD-56S 1.0B" type 5 removable SCSI 2 // cd0(aha0:3:0): CD-ROM cd present [400000 x 2048 byte records] // (aha0:5:0): "IOMEGA ZIP 100 E.08" type 0 removable SCSI 2 // od0(aha0:5:0): Optical od not present // od0(aha0:5:0): with approximate 0 cyls, 0 heads, and 0 sectors/track // // (Oh yes, I'm using the "ZIP as od patches", and love them ! :) ) // // // Acessing any of those SCSI devices generates messages like these // after some time: // // ... // Mar 18 06:06:53 dogbert /kernel: aha0: Invalid bus phase/sequence // Mar 18 06:06:55 dogbert /kernel: cd0(aha0:3:0): UNIT ATTENTION asc:29,0 // Mar 18 06:06:55 dogbert /kernel: cd0(aha0:3:0): Power on, reset, or bus device reset occurred // ... // Mar 18 07:40:47 dogbert /kernel: od0(aha0:5:0): UNIT ATTENTION asc:29,0 // Mar 18 07:40:47 dogbert /kernel: od0(aha0:5:0): Power on, reset, or bus device reset occurred // Mar 18 07:40:47 dogbert /kernel: , retries:2 // ... // // DOS/Windows also locks (without FreeBSD's messages, and REAL multitasking // it's a real mess :) ), so it must be a hardware problem. AHA1542 DMA Speed // setting is at 5MB/s, the DMA tests works between 3.3 and 6.7, but the error // occurs in all of them. Using any drive isolated works without problems. // // I've been thinking about cable (I'll try to find a new one today), but // I've used the middle conector before to connect an old SCSI HD, without // problems. Jonny -- Joao Carlos Mendes Luis jonny@gta.ufrj.br +55 21 290-4698 jonny@coppe.ufrj.br Universidade Federal do Rio de Janeiro UFRJ/COPPE/CISI PGP fingerprint: 29 C0 50 B9 B6 3E 58 F2 83 5F E3 26 BF 0F EA 67 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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