patch-2.1.77 linux/Documentation/ez.txt

• Lines: 86
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.76/linux/Documentation/ez.txt
• Orig date: Wed Dec 18 05:57:28 1996

diff -u --recursive --new-file v2.1.76/linux/Documentation/ez.txt linux/Documentation/ez.txt
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-linux/Documentation/ez.txt (c) 1996  Grant R. Guenther <grant@torque.net>
-
-This file documents the ez driver for the parallel port versions of 
-SyQuest's EZ135 and EZ230 removable media disk drives.  
-        
-Special thanks go to Pedro Soria-Rodriguez for his help testing 
-the EZFlyer 230 support.
-
-The drive is actually SyQuest's IDE product with a ShuttleTech 
-IDE <-> parallel converter chip built in.
-
-Before attempting to access the new driver, you will need to
-create some device special files.  The following commands will
-do that for you:
-
-                mknod /dev/eza  b 40 0
-                mknod /dev/eza1 b 40 1
-                mknod /dev/eza2 b 40 2
-                mknod /dev/eza3 b 40 3
-                mknod /dev/eza4 b 40 4
-                chown root:disk /dev/ez*
-                chmod 660 /dev/ez*
-
-You can make devices for more partitions (up to 15) if you need to.
-
-You can alter certain driver parameters on the LILO or LOADLIN 
-command line.  The general syntax is
-
-		ez=base[,irq]
-
-where base is the base address of the parallel port you want to use 
-and irq is the interrupt number for that port.   By default, the 
-driver uses the ports at 0x378 and irq 7.  You can disable the 
-interrupt by specifying it as 0.  For example, to run the driver 
-on port 0x3bc without an interrupt, you would append the following 
-to the LILO command line:
-
-		ez=0x3bc,0
-
-If you have configured the driver as a loadable module, you can 
-adjust these parameters on the insmod command line using the 
-variables ez_base and ez_irq.  For example:
-
-                insmod ez ez_base=0x3bc
-
-The driver can detect if the parallel port supports 8-bit
-transfers.  If so, it will use them.
-
-The driver can be used with or without interrupts.  If an IRQ
-is specified the driver will use it - if it can. If the irq 
-number is set to 0, an alternative, polling-based, strategy 
-will be used.  Polling consumes more CPU time, but may be more 
-stable on some systems.
-
-If you experience timeout errors while using this driver - and
-you have enabled interrupts - try disabling the interrupt.  I
-have heard reports of some parallel ports having exceptionally
-unreliable interrupts.  This could happen on misconfigured 
-systems in which an inactive sound card shares the same IRQ with 
-the parallel port. (Remember that most people do not use the
-parallel port interrupt for printing.)
-
-It would be advantageous to use multiple mode transfers,
-but ShuttleTech's driver does not appear to use them, so I'm not
-sure that the converter can handle it.
-
-It is not currently possible to connect a printer to the chained
-port on an EZ drive and expect Linux to use both devices at once.
-If you need to do this, build both the ez and lp drivers as modules
-and load one or the other as required.
-
-When the EZ230 powers on, the "standby timer" is set to about 6
-minutes:  if the drive is idle for that length of time, it will
-put itself into a low power standby mode.  It takes a couple of
-seconds for the drive to come out of standby mode.  So, if you
-load this driver while it is in standby mode, you will notice
-a "freeze" of a second or two as the driver waits for the EZ230
-to come back to life.  Once loaded, this driver disables the
-standby timer (until you next power up the EZ230 ...)
-
-Keep an eye on http://www.torque.net/ez135.html for news and
-other information about the driver.  If you have any problems
-with this driver, please send me, grant@torque.net, some mail 
-directly before posting into the newsgroups or mailing lists.
-