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-
-
- Mount(V1.3, 2.x, 3.x in C:)
-
-
-
- NAME
- Mount - Make a new device known to AmigaDOS.
-
- SYNOPSIS
- 1.3:
- MOUNT Dev [FROM filename]
-
-
- 2.x/3.x:
- MOUNT Devs [FROM filename]
-
- DESCRIPTION
- When AmigaDOS starts up, only a few devices are known
- to it. You can add new devices with the Mount command,
- which are then used just like any standard device. The
- devices might be actual hardware units, or they might be
- logical devices, such as a SPEAK: device, or a PIPE:
- device, or a buffered serial device SER:, or even a
- non-buffered serial device such as AUX:. The Assign
- command allows you to view or remove these added devices,
- as well as the standard system devices.
-
- Before using this command to Mount the device, you
- will need to create an entry for it in a file (this is
- referred to as a MountList entry). The details of doing
- this vary from device to device, but there should be
- documentation accompanying each device you intend to add
- that describes exactly how to do this. Ordinarily, you
- will make this entry in the file called DEVS:Mountlist on
- your system, but the FROM keyword gives you the option to
- specify another file to obtain the mountlist entry from.
- The 1.3 disk has a sample Mountlist file in the Devs:
- directory. This will form a good example of how to
- structure any mountlists you write.
-
- The size of the device is determined by the Surface,
- LowCyl, HighCyl, and BlocksPerTrack entries. Merely
- multiply these values together to get the available
- storage. For example, if you had a device with a
- Surface=2 (double sided), LowCyl= 0 and HighCyl=39 (40
- tracks per side: 39 - 0 + 1), and with a
- BlocksPerTrack=11 (11 sectors, each sector being 512
- bytes) you would end up with a 440k drive (.5k X 2 X 11 X
- 40= 440K).
-
- For non-memory devices such as SPEAK:, AUX:, SER:, or
- PIPE: the list simply shows where to find the handler. A
- handler is a program similar to a device driver.
-
- The CLI commands FORMAT and DISKCOPY work with all
- similar mounted devices. For instance, you can FORMAT or
- DISKCOPY between two 3.5 inch drives and two 5.25 inch
- drives, but not DISKCOPY between a 5.25-inch drive to a
- 3.5-inch drive. If you try, you will get an "Object Not
- Of Required Type" message.
-
- The MOUNT command looks for this Mountlist in the
- DEVS: directory. This file is a text file that shares
- some of the characteristics of the C programming
- language. For instance, hexadecimal numbers must start
- with the characters 0x. Semicolons must seperate multiple
- descriptions on a line. Comments must appear like in all
- AmigaDOS script comments, that is beginning with /* and
- ending with */. The Mountlist must end with the pound
- sign (ei #).
-
- 2.X/3.X Only:
-
- There is a completely new and user-friendly way to
- handle devices! There is a new drawer in your Workbench
- called "DOSDrivers" inside your DEVS: directory. These
- files are different from old mountlists in three ways: 1)
- They don't end in a pound sign, 2) They contain only one
- device name per file, and 3) the device name of the file
- is not specified in the list. To mount the device, you
- simply drag it into the DOSDrivers drawer and it will be
- mounted automatically when the Workbench is loaded. If
- you don't want the mountlist loaded automatically at
- startup, then simply place the mountlist in the
- DOSDrivers drawer of the Storage directory.
-
- KEYWORDS FOUND IN THE MOUNT LIST
- Handler=
- The name of the device handler file. Found in you l
- or devs directory of your workbench.
-
- EHandler=
- 2.x/3.x only: The name of the environment handler
- file found in your prefs/env-arc directory of your
- workbench.
-
- FileSystem=
- The name of the file system file. Usually found in
- your Devs or l directory of your Workbench.
-
- Device=
- The name of your device driver file found in the Devs
- drawer of your workbench. You can also specify a path to
- another device location if you to locate the driver in
- another drawer.
-
- Priority=
- The task priority of the process; 5 is typical of
- handlers, 10 is typical of file systems.
-
- Unit=
- The unit number of the device (ei 0 for df0: and 1
- for df1:).
-
- Flags=
- Flags setting for the OpenDevice call (usually 0).
-
- Surfaces=
- Number of write surfaces.
-
- BlocksPerTrack:
- The number of disk blocks (eg sectors) per track (eg
- cylinder).
-
- Reserved=
- The number of blocks used for the boot block; 2 is
- the standard here.
-
- PreAlloc=
- The number of blocks reserved at the end of a
- partition; used with a few IBM-style (yuk!) hard drives.
- This is usually 0.
-
- Interleave=
- This value controls the AmigaDOS interleave, not the
- physical hard drive interleave.
-
- LowCyl=
- Starting cylinder to use for this device.
-
- HighCyl=
- Ending cylinder for this device. Total number of
- cylinders= HighCyl - LowCyl +1.
-
- StackSize=
- The amount of working memory to allocate to the
- process.
-
- Buffers=
- Number of cache buffers to use with the device.
-
- BufMem Type=
- Type of memory to use for cache buffers. Values are
- as follows:
- 0 or 1 = Any
- 2 or 3 = CHIP
- 4 or 5 = FAST
-
- Mount=
- If this value is positive, MOUNT loads the handler or
- driver software as soon as the device is MOUNTed, rather
- than the first time the device is accessed. 2.1/3.x
- utilizes the word ACTIVE as a synonym for this keyword.
-
- MaxTransfer=
- The maximum number of blocks transfered at one time;
- used with the Fast File System only.
-
- Mask=
- Address mask that specifies the memory range that can
- be used for DMA transfers; used only with the Fast File
- System.
-
- GlobVec=
- If the handler is written in BCPL, it needs a global
- vecotr. A value of 0 sets up a private global vector;
- anything else indicates that the handler is written in C
- or assembly language, and no global vector is needed. If
- this keyword isn't used, the shared AmigaDOS global
- vector is used.
-
- Startup=
- A string passed to the handler, device, or file
- system on startup. This string is passed as a BPTR to a
- BSTR.
-
- BootPri=
- The boot priority of a bootable device, expressed as
- a number between -129 and 127. A value of -129 indicates
- that the device is not bootable, as is appropriate for
- use with the recoverable RAM disk if you don't want to
- boot from that device on reset.
-
- DosType=
- Indicates the format of the file system used. If the
- Fast File System is used, this value should be set to
- 0x444F5301 (DOS/1). Other types introduced in 2.1 include
- 0x444F5302 (DOS/2), an international version of the old
- file system that allows mixed-case accented characters in
- filenames, and 0x444F5303 (DOS/3), an international
- version of the Fast File System.
-
- Baud=
- Serial device speed (in bits per second).
-
- Control=
- Serial device control parameters- word length,
- parity, and stop bits (eg 8N1, 7E1).
-
- ForceLoad=
- A new 2.1 option. When this value is 0 (default), the
- system will check the resource list to see if the file
- system named in the entry has already been loaded. If it
- has, the system will use that one, instead of loading a
- new one.
-
-
- Under 1.3 you can only MOUNT one device at a time
- with one MOUNT command.
-
- The 2.x/3.x version of Mount allows you to mount any
- number of devices with one Mount command, which can speed
- up the startup-sequence somewhat.
-
-
- OPTIONS
- FROM
- This takes one argument, which should be a filename.
- This filename will be used to obtain the Mountlist entry
- for the device you are adding. If this keyword is not
- used, the file DEVS:Mountlist will be used instead.
-
-
- MOUNT KEYWORDS
-
- DEV
- The actual AmigaDOS device name, such as DF2:, DH0:,
- or SER:. This refers to either a hardware device like a
- disk drive or serial port, or a logical device such as a
- RAD or harddrive partition. The keyword must be the same
- as the label given in the Mountlist entry. The device
- mounted should also be available to the system.
-
- In 1.3 you can only specify one device per command.
- Under 2.x/3.x you can specify multiple devices with one
- command call. Wildcards may be used when specifying
- multiple devices.
-
- FROM
- Lets you specify a file other than DEVS:Mounlist as
- the place to look for the description of the device being
- MOUNTed.
-
- EXAMPLE
- 1. Assuming you have a mountlist for a device named
- FRANKIE:
-
- Mount FRANKIE:
-
- CAUTIONS
-
- Please note the following two differences between the
- V2.x/3.x Mount and the Commodore V1.3 Mount, which can
- cause problems in some cases if you are not aware of the
- differences.
-
- If you want to reboot from RAD: using the 2.x/3.x
- Mount, you must insert an explicit "BOOTPRI = 0"
- statement into the mountlist entry for RAD:, as compared
- with the Commodore Mount which automatically will reboot
- from RAD:.
-
- If you have a "MASK = nnnnn" statement in your
- mountlist, MAKE SURE THE MASK VALUE IS AN EVEN NUMBER.
- The 1.3 Mount automatically converts the mask value to an
- even value, but the 2.x/3.x Mount will pass through an
- odd value which can cause problems. You will probably
- only have a "MASK=nnnnnn" statement if you have memory
- that cannot be accessed by a DMA device, such as with a
- RONIN 68020 card.
-
-