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- This Readme file describes the floppy driver.
-
- FAQ list:
- =========
-
- A FAQ list may be found in the fdutils package (see below), and also
- at ftp.imag.fr:pub/Linux/ZLIBC/floppy/FAQ
-
-
- Lilo config options (Thinkpad users, read this)
- ===============================================
-
- The floppy driver is configured using the 'floppy=' option in
- lilo. This option can be typed at the boot prompt, or entered in the
- lilo configuration file.
- Example: If your kernel is called linux-72, type the following line
- at the lilo boot prompt (if you have a thinkpad):
- linux-72 floppy=thinkpad
- You may also enter the following line in /etc/lilo.conf, in the description
- of linux-72:
- append = "floppy=thinkpad"
-
- Several floppy related options may be given, example:
- linux-72 floppy=daring floppy=two_fdc
- append = "floppy=daring floppy=two_fdc"
-
- If you give options both in the lilo config file and on the boot
- prompt, the option strings of both places are concatenated, the boot
- prompt options coming last. That's why there are also options to
- restore the default behaviour.
-
- The floppy related options include:
-
- floppy=<mask>,allowed_drive_mask
- Sets the bitmask of allowed drives to <mask>. By default, only units
- 0 and 1 of each floppy controller are allowed. This is done because
- certain non-standard hardware (ASUS PCI motherboards) mess up the
- keyboard when accessing units 2 or 3. This option is somewhat
- obsoleted by the cmos option.
-
- floppy=all_drives
- Sets the bitmask of allowed drives to all drives. Use this if you have
- more than two drives connected to a floppy controller.
-
- floppy=asus_pci
- Sets the bitmask to allow only units 0 and 1. (The default)
-
- floppy=daring
- Tells the floppy driver that you have a well behaved floppy controller.
- This allows more efficient and smoother operation, but may fail on
- certain controllers. This may speed up certain operations.
-
- floppy=0,daring
- Tells the floppy driver that your floppy controller should be used
- with caution.
-
- floppy=one_fdc
- Tells the floppy driver that you have only floppy controller (default)
-
- floppy=two_fdc
- floppy=<address>,two_fdc
- Tells the floppy driver that you have two floppy controllers. The
- second floppy controller is assumed to be at <address>. If <address>
- is not given, 0x370 is assumed.
-
- floppy=thinkpad
- Tells the floppy driver that you have a Thinkpad. Thinkpads use an
- inverted convention for the disk change line.
-
- floppy=0,thinkpad
- Tells the floppy driver that you don't have a Thinkpad.
-
- floppy=<drive>,<type>,cmos
- Sets the cmos type of <drive> to <type>. Additionally, this drive is
- allowed in the bitmask. This is useful if you have more than two
- floppy drives (only two can be described in the physical cmos), or if
- your BIOS uses non-standard CMOS types. The CMOS types are:
- 0 - unknown or not installed
- 1 - 5 1/4 DD
- 2 - 5 1/4 HD
- 3 - 3 1/2 DD
- 4 - 3 1/2 HD
- 5 - 3 1/2 ED
- 6 - 3 1/2 ED
- (Note: there are two valid types for ED drives. This is because 5 was
- initially chosen to represent floppy *tapes*, and 6 for ED drives.
- AMI ignored this, and used 5 for ED drives. That's why the floppy
- driver handles both)
- Setting the CMOS to 0 for the first two drives (default) makes the
- floppy driver read the physical cmos for those drives.
-
- floppy=unexpected_interrupts
- Print a warning message when an unexpected interrupt is received
- (default behaviour)
-
- floppy=no_unexpected_interrupts
- floppy=L40SX
- Don't print a message when an unexpected interrupt is received. This
- is needed on IBM L40SX laptops in certain video modes. (There seems
- to be an interaction between video and floppy. The unexpected interrupts
- only affect performance, and can safely be ignored.)
-
-
- Supporting utilities and additional documentation:
- ==================================================
-
- Additional parameters of the floppy driver can be configured at run
- time. Utilities which do this can be found in the fdutils
- package. This package also contains a new version of mtools which
- allows to access high capacity disks (up to 1992K on a high density 3
- 1/2 disk!). It also contains additional documentation about the floppy
- driver. It can be found at:
- ftp.imag.fr:pub/Linux/ZLIBC/fdutils/fdutils-4.0.src.tar.gz
- sunsite.unc.edu:/pub/Linux/system/Misc/fdutils-4.0.src.tar.gz
- tsx-11.mit.edu:/pub/linux/sources/sbin/fdutils-4.0.src.tar.gz
-
- Alpha patches to these utilities are at:
- ftp.imag.fr:pub/Linux/ZLIBC/fdutils/ALPHA
- All patches contained in this directory are directly against the base
- version, i.e. DON'T APPLY THEM ON TOP OF EACH OTHER. Only apply the
- most recent one.
-
-
- Alpha patches for the floppy driver:
- ====================================
-
- You may find ALPHA patches of the driver itself in
- ftp.imag.fr:pub/Linux/ZLIBC/floppy/ALPHA. These patches are named
- fdp<kernel-version>-<day><month>.diff.gz
- WARNING: These _are_ ALPHA, and may introduce new problems! Some
- problems may only show up on certain hardware, or when trying weirdo
- things. So don't be misled by people claiming they are stable and
- should really be BETA. What works for one person, may not work for
- somebody else at all. This directory contains a RELEASES file
- describing the features of some of these patches.
-
- If after some testing these patches prove to be sufficiently stable,
- they'll move into ftp.imag.fr:pub/Linux/ZLIBC/floppy/BETA.
-
- You may find quick&dirty fixes to the driver in
- ftp.imag.fr:pub/Linux/ZLIBC/QDF. These patches are named
- fdp<kernel-version>-<day><month>.diff
- These patches fix only the most obvious problems, or provide trivial
- enhancements. The main objective is to keep these patches small and
- local, in order to keep the probability of introducing new problems as
- small as possible. However, they may not attack the root of the
- problem but only cure the symptoms. This directory contains a RELEASES
- file describing the features of these patches.
-
- The ALPHA, BETA and QDF directories are removed, and replaced by a
- README file when they get empty due to integration of the patches into
- the stock kernel. You may still find patches to old kernels in
- ftp.imag.fr:pub/Linux/ZLIBC/obsolete
-
-
- Reporting problems about the floppy driver
- ==========================================
-
- If you have a question or a bug report about the floppy driver, mail
- me at Alain.Knaff@imag.fr. If you post to the news, use preferably one
- of the groups comp.os.linux.help (for questions) or
- comp.os.linux.hardware (for bug reports). As the volume in these
- groups is rather high, be sure to include the word "floppy" (or
- "FLOPPY") in the subject line.
-
- Be sure to read the FAQ before mailing/posting any bug reports!
-
- Alain
-