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-
- Quantum TurboCharger v1.0 - (Dec 12 1991/02:29:17)
- Copyright ⌐ 1991, Fuller Computer Systems, Inc.
-
-
- DISCLAIMER
- -------------------
- THIS SOFTWARE IS PROVIDED "AS IS". NO REPRESENTATIONS OR
- WARRANTIES ARE MADE WITH RESPECT TO THE ACCURACY, RELIABILITY,
- PERFORMANCE, CURRENTNESS, OR OPERATION OF THIS SOFTWARE,
- AND ALL USE IS AT YOUR OWN RISK.
-
- NEITHER FULLER COMPUTER SYSTEMS NOR THE AUTHOR ASSUME
- ANY RESPONSIBILITY OR LIABILITY WHATSOEVER WITH RESPECT
- TO YOUR USE OF THIS SOFTWARE.
-
-
- DISTRIBUTION
- -------------------
- TurboQuantum is NOT in the public domain.
-
- Permission is hereby granted to distribute the TurboQuantum
- executable and documentation for non-commercial purposes,
- provided the copyright notices are not removed from the
- executable or documentation.
-
- TurboQuantum may not be distributed for a profit without the
- express written permission of Fuller Computer Systems, Inc.
-
- Fred Fish is expressly granted permission to distribute the
- TurboQuantum executable and documentation as part of the
- "Fred Fish freely redistributable Amiga software library."
-
- The Byte Information Exchange (BIX) is expressly granted
- permission to distribute the TurboQuantum executable and
- documentation as part of the Amiga Exchange listings area.
-
-
- WHAT IS THIS THING?
- -------------------
- TurboQuantum is basically a SCSI bit twiddler. Specifically, it will
- set or clear the Disable Disconnection bit in the Quantum Drive Control
- Parameters Mode Page (vendor unique page $39 / byte 3, bit 7).
-
- Q: What does the Disable Disconnection bit do?
-
- A: The Disable Disconnection (DDIS) mode parameter controls a Quantum
- hard disk's ability to disconnect from, and reconnect to a SCSI
- controller while it is transferring data. The default behavior of
- most Quantum drives is to allow disconnection/reconnection to
- happen while a data transfer is in progress.
-
-
- Q: Why whould I want to change the DDIS parameter.
-
- A: When a hard disk causes a disconnect/reconnect to happen, the SCSI
- controller must reset its internal data transfer pointers for that
- hard disk. If your Controller uses DMA (like the A3000 and A2091),
- it must also reinitialize its DMA controller. Certain DMA SCSI
- controllers will actually "fall-back" to CPU controlled I/O after
- a disconnect/reconnect! The bottom line is that your hard disk
- data transfer performance can drop... And in some cases CPU
- availibility during a hard disk access will disappear.
-
-
- Q: What can be done about this?
-
- A: Twiddle the DDIS bit -- TurboQuantum does this for you. This will
- get rid of the disconnect/reconnects that happen during a data
- transfer. It will not prevent the initial disconnection due to the
- implied seek of a READ command. For a WRITE command, disconnection
- will only happen after all data has been transferred into the buffer
- on the hard disk. This will improve hard disk performance.
-
-
- HOW TO USE IT
- -------------------
- TurboQuantum can be started from Workbench or the CLI/Shell.
-
- When TurboQuantum starts, it will scan your SCSI bus looking for
- Quantum hard disks. It can identify SCSI devices connected to the
- following controllers:
-
- scsi.device - Commodore A3000, A2091 and A590
- HardFrame.device - Microbotics HardFrame
- suprascsi.device - Some Supra hard disk controllers
- gvpscsi.device - Some GVP hard disk controllers
- Malibu.device - California Access Malibu Board
-
- If you have more than one controller connected to your Amiga computer,
- TurboQuantum will check for as many as it can find and identify.
-
- You can specify additional devices to search for via the DEVICE= tooltype
- in the TurboQuantum icon or via the "-d" option from the CLI/Shell.
-
- Once the devices have been scanned, TurboQuantum will then ask you what
- you would like to do.
-
- If all of the Quantum hard disks do NOT have their DDIS bits set,
- the "TurboCharge!" button will be selectable.
-
- If all of the Quantum hard disks already have their DDIS bits set,
- the "Remove TurboCharge Changes" button will be selectable.
-
- If some of the Quantum hard disks already have their DDIS bits set,
- and some do not, both buttons will be selectable.
-
- To quit TurboQuantum without changing anything, simply select the
- CLOSEWINDOW button in the upper left corner of the window.
-
-
- ICON TOOLTYPES
- -------------------
-
- DEVICE
- Use this tooltype to specify additional device drivers.
-
- Example: DEVICE=foo.device|bar.device
-
-
- FLAGS
- The FLAGS tooltype is used to specify modifiers to the default
- operation of TurboQuantum. These modifiers are:
-
- ONEBOARD
- When scanning device drivers for SCSI devices, this flag
- limits the scan to the first board of the device driver.
-
- NOLUNS
- When scanning device drivers for SCSI devices, this flag
- limits the scan to the first LUN on each SCSI device.
-
- OVERRIDE
- This flag removes the single invocation restriction.
- If this flag is not specified and there is another
- copy of TurboQuantum already running, the window of
- the active TurboQuantum is moved in front of all
- other windows.
-
- Example: FLAGS=NOLUNS
-
-
- USERFONT
- This tooltype can be used to force TurboQuantum to use an
- alternate typeface for all text rendered into the TurboQuantum
- window. If the specified typeface can not be used because
- of screen size limits, the default will be used.
-
- Example: USERFONT=times.24
-
-
- CLI/Shell USAGE
- -------------------
- USAGE: TurboQuantum [-d device] [-f font.size] [-blDO]
- Options: d device name specifiers
- b limit device scan to one SCSI board
- l limit LUN scan to the first LUN
- f text font specifier (ie. topaz.8)
- D enable debug and progress messages
- O override single invocation restriction
-
-
- CREDITS
- -------------------
- Thanks to Michael Sinz for determining the
- real world effects of the DDIS parameter.
-
-
- MODIFICATIONS
- -------------------
- 20-Dec-91 -- Initial public release.
-
-
- AND NOW A WORD FROM OUR SPONSOR
- --------------------------------------
- Are you tired of using old and obnoxious utilities
- that just don't seem to want to work right?
-
- Well, here in the Fuller Research Cave we have been working around
- the clock (which happens to be in the center of the cave) to bring
- you the most sophisticated utilities which are pretty AND useful.
- (Hey, how 'bout that, _Pretty_Useful_!)
-
- Over the next few months we will be releasing some hot
- new tools that help you be the master of your hard drives.
-
- So... Keep your eyes peeled, your ears cleaned out, and your
- fingernails trimmed -- Er, wrong commercial. Sorry.
-
- So be watching for the new line of hard drive management tools
- from Fuller Computer Systems, Inc... _The Utility Company_.
-
- ps. _Please_ don't peel your eyes.
-
- (Goofy music plays in the background.... Fade to black.)
-
- --------------------------------------
-
- Enjoy... Any questions... Just ask.
-
- Ben Fuller
- (bix: benfuller)
- Fuller Computer Systems
-
-