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- Path: galileo.cris.com!Ragman
- From: Ragman@cris.com (Ragman)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Max xfer value for older Syq ext.
- Date: 15 Mar 1996 01:40:08 GMT
- Organization: Concentric Internet Services
- Message-ID: <4iahpo$19e@spectator.cris.com>
- References: <4i964h$kfm@madeline.INS.CWRU.Edu>
- NNTP-Posting-Host: galileo.cris.com
- X-Newsreader: TIN [version 1.2 PL2]
-
- J. Norell Guttman (njg2@po.CWRU.Edu) wrote:
-
-
-
- : Can someone tell me what max-xfer & mask value settings are appropriate for
- : an external Syquest 88 meg 5.25 inch hard drive?
-
- : On my A4000/040 I have the Syq hooked up to an Emplant scsi controller, with
- : the latest chip and '.device' software. 1st I use HDToolBox and define a new
- : type for the cart, then i low-lev format, then I go to partition and make one
- : 88 meg partition and set the filesystem for DC-FFS. I then save changes and
- : exit HDToolBox.
-
- : Now i use scsimounter to mount the drive, then I tried to format the disk
- : when the icon appeared on the workbench, but as it got 1/2 way through, it quit
- : saying it couldn't format one of the cylinders. I tried twice.
-
- : Well the cart was fine when the Syq was on a PC (and it was previously an
- : formatted Amiga anyways) so I know its good. SO I bring it to my frineds 3000
- : hook up the Syq there, use HDToolBox there to prep it, then format it there
- : and it formats fine. So I can now mount it on my 4000 with scsimounter and use
- : it, but, sometimes on reads or writes of big files, it 'freezes' the computer
- : momentarily until its done with the packet, but yesterday, when I had 3 DCC
- : sends going from the Syq it 'froze' the computer and wouldn't release till I
- : finally hit the eject button on the drive. I put the disk back in and the xfer
- : continued and only one file got corrupted needless to say. I believe that its a
- : problem of simply tweaking the mask/xfer values, but since I dont have any
- : manuals for the drive, I don't know its specs.
-
- : The values that are currently in there now are 0x0fffffe=Mask,
- : 0xffffff=Max-xfer file system block-size=512 and buffers=30 as set and
- : reported by HDToolBox. There are other values like stacksize, priority,
- : prealloc, interleave and buffermemtype which I dont really know how they work.
- : Their values are 600, 10, 0, 0 and 0 respectively as reported by a 'GenML'
- : created mountlist.
-
- : If anyone has any experience or a mountlist for a similar setup and isn't
- : having any problems, please respond here or via email. Thanks.
-
- Here's a snippet for one of my SQ555 (44M) SyQuests :
-
- device = HardFrame.device
- Unit = 4
- Flags = 0x0
- Surfaces = 2
- BlockSize = 512
- BlocksPerTrack = 34
- Reserved = 2
- Interleave = 0
- LowCyl = 1 ; HighCyl = 1274
- PreAlloc = 0
- Buffers = 20
- BufMemType = 1
- DOSType = 0x444f5301
- MaxTransfer = 130560
- Mask = 0xfffffe
- Mount = 1
- /*! Bootable = 0 */
- BootPri = -128
-
- Your 'BlocksPerTrack', 'HighCyl', 'device', 'DOSType', 'Unit' will/should be
- different than that of the 44M and since you are not using the same setup
- as I am. If you need any other help, let me know.
-
-