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SCSI problems

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ghldbrd＠ccp.com

15 Oct 2001 15 Oct '01

1:40 p.m.

A friend has a 9 gig Seagate drive and an Adaptec 1542C card and is having a helluva time getting it to work with a late model motherboard. boots okay from an IDE drive, but the aforementioned setup hangs almost every time. Do you know of an incompatibility with the drive and card; i.e. too much drive for the scsi bios to understand??? Gary Hildebrand

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geoffr＠zipcon.net

15 Oct 15 Oct

2:20 p.m.

What BIOS revision on the 1542C? what motherboard? what BIOS rev on that motherboard. and which 9 gig seagate? At 08:40 PM 10/15/01 -0500, you wrote:

A friend has a 9 gig Seagate drive and an Adaptec 1542C card and is having a helluva time getting it to work with a late model motherboard. boots okay from an IDE drive, but the aforementioned setup hangs almost every time. Do you know of an incompatibility with the drive and card; i.e. too much drive for the scsi bios to understand??? Gary Hildebrand

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edick＠idcomm.com

2:29 p.m.

If it's in a PnP motherboard, it's really important that the interrupt assignments don't clash. I don't know about the 'C' verson, but I've got several 'B' and 'A' version boards, and a plain 1540. All of them require Irq11 and port address 0x330 and DMA5 in order to work from the BIOS. If you can get the motherboard to allow it to use those assignments, the firmware works. Windows will find the board after a little massaging if you don't use the default addresses, but the firmware won't find it. These aboards are also pretty fussy about having the termination right. SCSI will often limp along with incorrect termination, but it eventually will bite you. I'd recommend a check to ensure the board isn't providing redundant termination. I know of no reason why a motherboard with ISA slots shouldn't work just fine with thsi board. It's unlikely even a current generation Seagate drive shouldn't work with this board, so long as it's SE SCSI. There are probably transfer rate settings that can be handled through the BIOS, depending on the version. A check with ADAPTEC should settle this thing pdq if you find the faq's. Dick ----- Original Message ----- From: "Gary Hildebrand" <ghldbrd(a)ccp.com> To: "Classic computing mailing list" <classiccmp(a)classiccmp.org> Sent: Monday, October 15, 2001 7:40 PM Subject: SCSI problems

A friend has a 9 gig Seagate drive and an Adaptec 1542C card and is having a helluva time getting it to work with a late model motherboard. boots okay from an IDE drive, but the aforementioned setup hangs almost every time. Do you know of an incompatibility with the drive and card; i.e. too much drive for the scsi bios to understand??? Gary Hildebrand

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erd_6502＠yahoo.com

16 Oct 16 Oct

3:15 a.m.

--- Richard Erlacher <edick(a)idcomm.com> wrote:

If it's in a PnP motherboard, it's really important that the interrupt assignments don't clash. I don't know about the 'C' verson, but I've got several 'B' and 'A' version boards, and a plain 1540. All of them require Irq11 and port address 0x330 and DMA5 in order to work from the BIOS.

The C is a *nice* card - it's incredibly flexible with its own BIOS setup program that runs if you have one of the dip switches set to allow it (you can also run it without its own SCSI BIOS if DOS memory is at a premium). You can run surface scans and even do a low-level format (very useful for a batch of 4Gb drives I got that were formatted to 524 bytes/block). I have been using one since I got it new @ $200. Great card. They should be <$25 now. I see them all the time at the Dayton ComputerFest. If you need an ISA SCSI controller, I can recommend it. There are two flavors, though - 1542C and 1542CF - F for Fast. The original rev wasn't in spec for SCSI-2 Fast. There's an ECO (a wire and a capacitor) and new ROMs. -ethan __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com

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rhblakeman＠kih.net

7:29 a.m.

If his Seagtes are ST410800N like mine they are SCSI 2 fast and I have had them on a non-fast controller but I did get sector errors until I did a low level format. They still didn't work right until I put them on the 2740 which does the fast comm scheme. -> -----Original Message----- -> From: owner-classiccmp(a)classiccmp.org -> [mailto:owner-classiccmp@classiccmp.org]On Behalf Of Ethan Dicks -> Sent: Tuesday, October 16, 2001 10:16 AM -> To: classiccmp(a)classiccmp.org -> Subject: Re: SCSI problems -> -> -> -> --- Richard Erlacher <edick(a)idcomm.com> wrote: -> > If it's in a PnP motherboard, it's really important that the interrupt -> > assignments don't clash. I don't know about the 'C' verson, -> but I've got -> > several 'B' and 'A' version boards, and a plain 1540. All of them -> > require Irq11 and port address 0x330 and DMA5 in order to work from the -> > BIOS. -> -> The C is a *nice* card - it's incredibly flexible with its own BIOS -> setup program that runs if you have one of the dip switches set to -> allow it (you can also run it without its own SCSI BIOS if DOS memory -> is at a premium). You can run surface scans and even do a low-level -> format (very useful for a batch of 4Gb drives I got that were formatted -> to 524 bytes/block). -> -> I have been using one since I got it new @ $200. Great card. They -> should be <$25 now. I see them all the time at the Dayton ComputerFest. -> -> If you need an ISA SCSI controller, I can recommend it. There are two -> flavors, though - 1542C and 1542CF - F for Fast. The original rev wasn't -> in spec for SCSI-2 Fast. There's an ECO (a wire and a capacitor) and -> new ROMs. -> -> -ethan -> -> -> -> __________________________________________________ -> Do You Yahoo!? -> Make a great connection at Yahoo! Personals. -> http://personals.yahoo.com ->

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ghldbrd＠ccp.com

9:17 a.m.

Russ Blakeman wrote:

If his Seagtes are ST410800N like mine they are SCSI 2 fast and I have had them on a non-fast controller but I did get sector errors until I did a low level format. They still didn't work right until I put them on the 2740 which does the fast comm scheme.

Well that is the drive he is using, and that may be the answer. I have the same drive on my Linux box with a 2940UW card and it works just fine. Gary Hildebrand

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rhblakeman＠kih.net

10:56 a.m.

Oh yeah on the 2940UW they fly! I had mine originally in my IBM PS/2 9595-OPT pentium server with the fast/wide adapter and they worked great too but on the 16/32 non-wide controller they acted stupid. -> -----Original Message----- -> From: owner-classiccmp(a)classiccmp.org -> [mailto:owner-classiccmp@classiccmp.org]On Behalf Of Gary Hildebrand -> Sent: Tuesday, October 16, 2001 4:17 PM -> To: classiccmp(a)classiccmp.org -> Subject: Re: SCSI problems -> -> -> Russ Blakeman wrote: -> > -> > If his Seagtes are ST410800N like mine they are SCSI 2 fast -> and I have had -> > them on a non-fast controller but I did get sector errors -> until I did a low -> > level format. They still didn't work right until I put them on the 2740 -> > which does the fast comm scheme. -> > -> Well that is the drive he is using, and that may be the answer. I have -> the same drive on my Linux box with a 2940UW card and it works just -> fine. -> -> Gary Hildebrand ->

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geoffr＠zipcon.net

12:04 p.m.

Hang 'em off a 154xCF and they'd fly also... At 05:56 PM 10/16/01 -0500, you wrote:

Oh yeah on the 2940UW they fly! I had mine originally in my IBM PS/2 9595-OPT pentium server with the fast/wide adapter and they worked great too but on the 16/32 non-wide controller they acted stupid.

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rhblakeman＠kih.net

15 Oct 15 Oct

3:04 p.m.

If there is an IDE drive it will not boot from SCSI - he has to take out the IDE and eneable the bios on the Adaptec, also make sure that the drive's ID is 0 to 6 and that the adaptec card is ID 7 and that termination is set on the drive if it's the only SCSI device. I have 9 of the same type (full hieght seagate 5.25" 9gb SCSI 2 with 50 pin connection) in my old Server 320 and it works fine. Of course I'm using an Adaptec PCI ultra wide 2940UW and 2940W Wide adapter as well as a 2740 EISA controller as I have tape and cdrom drives on the server as well. I have my boot device as ID 0. Adaptec has the docs in PDF on their support site for all the old adapters. -> -----Original Message----- -> From: owner-classiccmp(a)classiccmp.org -> [mailto:owner-classiccmp@classiccmp.org]On Behalf Of Gary Hildebrand -> Sent: Monday, October 15, 2001 8:41 PM -> To: Classic computing mailing list -> Subject: SCSI problems -> -> -> A friend has a 9 gig Seagate drive and an Adaptec 1542C card and is -> having a helluva time getting it to work with a late model motherboard. -> boots okay from an IDE drive, but the aforementioned setup hangs almost -> every time. -> -> Do you know of an incompatibility with the drive and card; i.e. too much -> drive for the scsi bios to understand??? -> -> Gary Hildebrand ->

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edick＠idcomm.com
erd_6502＠yahoo.com
geoffr＠zipcon.net
ghldbrd＠ccp.com
rhblakeman＠kih.net