isp16
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- -- Documentation/cdrom/isp16
- Docs by Eric van der Maarel <H.T.M.v.d.Maarel@marin.nl>
- This is the README for version 0.6 of the cdrom interface on an
- ISP16, MAD16 or Mozart sound card.
- The detection and configuration of this interface used to be included
- in both the sjcd and optcd cdrom driver. Drives supported by these
- drivers came packed with Media Magic's multi media kit, which also
- included the ISP16 card. The idea (thanks Leo Spiekman)
- to move it from these drivers into a separate module and moreover, not to
- rely on the MAD16 sound driver, are as follows:
- -duplication of code in the kernel is a waste of resources and should
- be avoided;
- -however, kernels and notably those included with Linux distributions
- (cf Slackware 3.0 included version 0.5 of the isp16 configuration
- code included in the drivers) don't always come with sound support
- included. Especially when they already include a bunch of cdrom drivers.
- Hence, the cdrom interface should be configurable _independently_ of
- sound support.
- The ISP16, MAD16 and Mozart sound cards have an OPTi 82C928 or an
- OPTi 82C929 chip. The interface on these cards should work with
- any cdrom attached to the card, which is 'electrically' compatible
- with Sanyo/Panasonic, Sony or Mitsumi non-ide drives. However, the
- command sets for any proprietary drives may differ
- (and hence may not be supported in the kernel) from these four types.
- For a fact I know the interface works and the way of configuration
- as described in this documentation works in combination with the
- sjcd (in Sanyo/Panasonic compatibility mode) cdrom drivers
- (probably with the optcd (in Sony compatibility mode) as well).
- If you have such an OPTi based sound card and you want to use the
- cdrom interface with a cdrom drive supported by any of the other cdrom
- drivers, it will probably work. Please let me know any experience you
- might have).
- I understand that cards based on the OPTi 82C929 chips may be configured
- (hardware jumpers that is) as an IDE interface. Initialisation of such a
- card in this mode is not supported (yet?).
- The suggestion to configure the ISP16 etc. sound card by booting DOS and
- do a warm reboot to boot Linux somehow doesn't work, at least not
- on my machine (IPC P90), with the OPTi 82C928 based card.
- Booting the kernel through the boot manager LILO allows the use
- of some command line options on the 'LILO boot:' prompt. At boot time
- press Alt or Shift while the LILO prompt is written on the screen and enter
- any kernel options. Alternatively these options may be used in
- the appropriate section in /etc/lilo.conf. Adding 'append="<cmd_line_options>"'
- will do the trick as well.
- The syntax of 'cmd_line_options' is
- isp16=[<port>[,<irq>[,<dma>]]][[,]<drive_type>]
- If there is no ISP16 or compatibles detected, there's probably no harm done.
- These options indicate the values that your cdrom drive has been (or will be)
- configured to use.
- Valid values for the base i/o address are:
- port=0x340,0x320,0x330,0x360
- for the interrupt request number
- irq=0,3,5,7,9,10,11
- for the direct memory access line
- dma=0,3,5,6,7
- and for the type of drive
- drive_type=noisp16,Sanyo,Panasonic,Sony,Mitsumi.
- Note that these options are case sensitive.
- The values 0 for irq and dma indicate that they are not used, and
- the drive will be used in 'polling' mode. The values 5 and 7 for irq
- should be avoided in order to avoid any conflicts with optional
- sound card configuration.
- The syntax of the command line does not allow the specification of
- irq when there's nothing specified for the base address and no
- specification of dma when there is no specification of irq.
- The value 'noisp16' for drive_type, which may be used as the first
- non-integer option value (e.g. 'isp16=noisp16'), makes sure that probing
- for and subsequent configuration of an ISP16-compatible card is skipped
- all together. This can be useful to overcome possible conflicts which
- may arise while the kernel is probing your hardware.
- The default values are
- port=0x340
- irq=0
- dma=0
- drive_type=Sanyo
- reflecting my own configuration. The defaults can be changed in
- the file linux/drivers/cdrom/ips16.h.
- The cdrom interface can be configured at run time by loading the
- initialisation driver as a module. In that case, the interface
- parameters can be set by giving appropriate values on the command
- line. Configuring the driver can then be done by the following
- command (assuming you have iso16.o installed in a proper place):
- insmod isp16.o isp16_cdrom_base=<port> isp16_cdrom_irq=<irq>
- isp16_cdrom_dma=<dma> isp16_cdrom_type=<drive_type>
- where port, irq, dma and drive_type can have any of the values mentioned
- above.
- Have fun!