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      1 # device-streams
      2 Amiga tool for copying between block devices and streams/files, similar to UNIX `dd`.
      3 Originally released by Christian E. Hopps in 1993, updated to be useful today.
      4 
      5 Requires AmigaOS 2.04+.
      6 
      7 https://github.com/rvalles/device-streams
      8 
      9 ## Usage
     10 Run the command with `-h` parameter to display usage information.
     11 
     12 ### Examples
     13 #### Print RDB device and partition information.
     14 ```
     15 5.Ram Disk:> devstreams/rdbinfo
     16 Device: "scsi.device"  Unit: 0  Capacity: 114473.4 Megs
     17 DiskVendor: FUJITSU  DiskProduct MHV2120AH        DiskRevision: 0000
     18 Cylinders: 232581  Heads: 16  Blks-p-Trk: 63 [Blks-p-Cyl: 1008]
     19 Total Blocks: 234441648  Block Size 512
     20 64bit
     21 
     22 --| Partition: "DH0" Capacity: 1023.7 Megs
     23 --| Start Block: 3024  End Block: 2099663 Total Blocks: 2096640
     24 --| Block Size: 512
     25 
     26 --| Partition: "DH1" Capacity: 10239.4 Megs
     27 --| Start Block: 2099664  End Block: 23070095 Total Blocks: 20970432
     28 --| Block Size: 512
     29 --| 64bit
     30 ###
     31 ```
     32 #### Dump a partition into a file.
     33 ```
     34 5.Ram Disk:> devstreams/devtostream --output=DH1:dump.dd --rdb-name=DH0 --verbose
     35 found new device "scsi.device"
     36 found drive FUJITSU  MHV2120AH        0000 [capacity:114473M]
     37  at unit 0 on device "scsi.device"
     38 | partition: "DH0" sb: 3024 eb: 2099663 totb: 2096640
     39 |            Block Size: 512 Capacity: 1023.7
     40 | partition: "DH1" sb: 2099664 eb: 23070095 totb: 20970432
     41 |            Block Size: 512 Capacity: 10239.4
     42 found partition: "DH0" capacity: 1023.7 Megs
     43 start block: 3024  end block: 2099663 total blocks: 2096640
     44 block Size: 512
     45 dumping: start block: 3024 to end block: 2099663 [size: 1048319K]
     46 
     47 write from partition "DH0" to file "DH1:dump.dd"? [Ny]:y
     48 writing: 0x00200950 -> 0x002009cf  [100%]
     49 ```
     50 ## Improvements
     51 * Cleaned up code.
     52 * Removed SAS/C-isms and updated to build in modern toolchains.
     53 * Use of 64bit offsets throughout.
     54 * Safeguards added against 32bit overflow wraparound.
     55 * Use dos.library for file I/O.
     56 * Trackdisk 64 support.
     57 * NSD support.
     58 
     59 ## Binaries built
     60 * rdbinfo: Examines RDB partition tables and lists the partitions.
     61 * streamtodev: Writes data from a stream into a device.
     62 * devtostream: Reads data from a device into a stream.
     63 * xstreamtodev: As streamtodev but with extra options to specify block range.
     64 * xdevtostream: As devtostream but with extra options to specify block range.
     65 
     66 ## Building
     67 The new build process uses GNU Make. Simply review the Makefile and run `make`.
     68 
     69 Alternatively,
     70 * `make clean` will delete all artifacts.
     71 * `make lint` will format the code to standards.
     72 * `make dist` will prepare a lha archive with the binaries.
     73 
     74 Development is done using the `bebbo/amiga-gcc` crossdev toolchain.
     75 https://github.com/bebbo/amiga-gcc
     76 
     77 With some care so that building with `vbcc` is also supported.
     78 http://sun.hasenbraten.de/vbcc/
     79 
     80 ## Authors
     81 * Roc Valls Domnech (2022)
     82 * Christian E. Hopps (1993)
     83