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- G E O B E A P 1 . 5
-
- Bo's Excellent Archival Program
-
- Disk Image Archival Program
-
- Program and Text by Bo Zimmerman
-
-
- [NEW FEATURES]
- [{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}]
-
- These are new powers added to
- geoBEAP v1.5:
-
- * Can create .BEP image archives of
- CMD native mode partitions, including
- FD-2000 and FD-4000 disks.
-
- * Will work with Wheels disk
- drivers.
-
- * Now has 4-drive support.
-
- * Can change native partitions under
- Wheels.
-
- * Now runs in Geos 2.0 in 40 [or]
- 80 columns.
-
- [FENDER'S NOTE:] On LS #155 I named
- the update of geoBEAP Version 2.0. I
- should have called it v1.2. In other
- words, this version, geoBEAP 1.5, is
- the latest best version. Use this
- instead of "v2" on LS #155.
-
-
- [INTRODUCTION]
- [{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}]
-
- geoBEAP is an archival program
- which packs and unpacks images of
- whole disks (tracks and sectors)
- instead of collections of files. It
- will create and dissolve single-sided
- 5.25-inch disks into the famous
- .D64 format used by the popular
- "C64S" and other Commodore 64
- emulators used by PC owners (and C64
- software collectors these days). It
- will also create and unpack a native
- .BEP format off a disk in any GEOS-
- supported drive, using compression.
-
- geoBEAP allows you to create
- archives in the .d64 format and
- unpack these files back onto 5.25"
- disks readable by our trusty 1541/71
- drives.
-
- With geoBEAP you can create and
- dissolve archives (.BEP format)
- containing a truly compressed disk
- image of a disk in any GEOS-supported
- drive. The disks you archive need not
- be GEOS disks, or even in GEOS
- format, but need only be in 1541,
- 1571, or 1581 format.
-
-
- [SYSTEM REQUIREMENTS]
- [{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}]
-
- geoBEAP requires the following
- hardware and software to execute:
-
- [1.] Commodore 64 or 128 (in 64
- mode)
-
- [2.] GEOS 64 operating system.
-
- [3.] At least two GEOS compatible
- drives, including the 1541 (and
- compatibles), 1571, 1581, CMD devices
- partitioned as one of the above, or
- RAM drives in one of the above
- formats. The drives numbered 8 and 9
- must be the same type of drive.
-
- [4.] An REU.
-
- [5.] The geoBEAP application.
-
-
- [USING GEOBEAP]
- [{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}]
-
- geoBEAP is executed by double-
- clicking on its icon. This will bring
- up the main selection screen. On the
- screen you will see two large file
- windows, one of which is for the
- source drive, which indicates the disk
- to be packed or the disk on which an
- archive to be unpacked is found. The
- other is the destination file window,
- which will show files on the disk
- where an archive will be created or
- where an archive will be unpacked to.
-
- Within the file windows, at the
- bottom, are two arrows for viewing
- different pages of file names. The up
- arrow will go back a page toward the
- beginning of the disk, while the down
- arrow will show files further down in
- the directory.
-
- Below each file window is a button
- for selecting which drive and disk is
- to be recognized as the source and
- destination. Clicking the drive button
- will cycle through your GEOS active
- drives from A to B to C back to A. The
- disk button will prompt you to insert
- a new disk into the active drive for
- that file window.
-
- In the middle of the screen are
- selection boxes for choosing whether
- you wish to pack or unpack, and
- whether you are using the .D64 or .BEP
- format. A darkened square next to your
- selection will indicate which options
- are active. This may be changed by
- clicking in an unselected box.
-
- The launch button will begin the
- packing or unpacking process as
- designated by your selections.
-
- At the top right of the screen is
- the exit box, which will take the user
- back to the deskTop when clicked.
-
-
- [LAUNCHING]
- [{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}]
-
- When the launch button is clicked,
- the system will examine your
- selections on the main screen to
- determine if the process can begin.
- For starters, although the main screen
- allows you to make the source and
- destination drives the same for the
- purposes of selection, they are not
- allowed to be the same when the
- packing/unpacking process is launched;
- thus the requirement that you have two
- or more drives. If the drives are the
- same number, an error message will
- result.
-
- You must also make sure that all
- of the disks in your selected drives
- are properly formatted and the correct
- disks are in each drive.
-
-
- [PACKING]
- [{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}]
-
- When packing a disk into an
- archive, you must ensure that your
- destination disk has enough free space
- to hold the archive image file. For
- .D64 images, this is exactly 689
- blocks. This rules out a 1541 as a
- destination drive.
-
- [JEFF'S EXPLANATION:] How do we end
- up with a 1541 disk image that's more
- than 664 blocks? Well, you have 664
- blocks [free] on a 1541 disk, but
- there is actually room for 689 blocks.
- The 1541 uses the extra 25 blocks for
- the BAM and directory, all of which
- must be included in the .D64 image.
-
- The system will then prompt the
- user for the filename of the archive
- file you wish to create. You need not
- add any extension to your filename, as
- the system will automatically add the
- correct extension (either ".D64" or
- ".BEP") to your filename before
- creating the file on the destination
- drive. The archive files created will
- be standard Commodore format PRG files
- for easy uploading, downloading,
- copying, storing, or whatever.
-
- After a confirmation to begin is
- received from the user, the system
- will present a progress window and
- begin packing each individual track
- and sector from the source drive into
- the destination file. When completed,
- the archive file will be present on
- the destination disk, ready for
- unpacking in the future.
-
- If a "source disk error" should
- occur during the packing process, it
- will most likely be due to some disk
- error present on the source disk, the
- removal of the source disk from the
- drive before the archiving process was
- complete, or the improper selection of
- the source disk from the main screen.
- geoBEAP will not pack disks with read
- errors.
-
- A "destination disk error" most
- likely occurs when the destination
- disk does not have enough disk space
- to hold the disk image. Remember that
- .D64 images require 689 blocks to hold
- their images, while .BEP files are
- variable in size and [might] fit on a
- 1541 disk dependent upon the
- compression possible from the source
- disk.
-
- Since every block of a disk is
- packed, the "blocks free" reported in
- a directory may not correspond to the
- size of a .BEP image. A recently
- formatted 1571 disk (330k free) may
- produce a 3k .BEP image, while a
- heavily used disk (with 330k free) may
- produce a 200k .BEP file. The number
- of text files vs. binary files, and
- the number of sectors never used will
- all play a role in the size of a .BEP
- image. Making .BEP archives will be
- most useful on commercial disks which
- store their data in strange ways --
- which many do. Don't worry if a
- created image will not fit on your
- destination disk, simply retry your
- archive on a disk with more free
- space. The system will erase the
- uncompleted file so as not to leave a
- "splat" file.
-
- To create a .D64 image, the source
- disk must be a single-sided 5.25"
- disk. geoBEAP will create .D64 images
- from double-sided 1571 disks, but they
- will not contain all of the data from
- the disk. The .D64 image, once
- created, can then be ported to a PC
- using Big Blue Reader, or LI'L RED
- READER and used with the C64S
- emulator. Regardless of the format of
- the 5.25" disk in the drive, the
- system will ask for a confirmation if
- the source drive is a 1571.
-
- [DAVE'S INJECTION:] Big Blue Reader
- by SOGWAP is available from Centsible
- Software (800-640-6211) for $40. LI'L
- RED READER, a public domain program by
- Craig Bruce, has been LOADSTARized for
- the 80-column, 128-mode by yours
- truly, and appears on LOADSTAR 128
- #32. Call 800-594-3370 to order LS 128
- #32 as a back issue for $8.
-
-
- [UNPACKING]
- [{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}]
-
- When unpacking an archive, you
- must first select an archive file from
- the files in the source file window.
- This is done by finding the file in
- the file window and highlighting it by
- clicking on its name. geoBEAP will
- unpack image archives in the .D64 and
- .BEP formats only, and requires that
- the proper format be designated on the
- main screen.
-
- You must ensure that the
- destination disk is the same type as
- the disk from which the archive was
- created. The system will inform the
- user if, for instance, you try to
- unpack a 1581 image onto a 1541 or
- 1571 disk.
-
- For unpacking .D64 images, the
- destination disk must be in a 5.25"
- drive, preferably with a single sided
- 1541 format disk. .D64 archive files
- will almost always be 689 blocks long,
- but sometimes they will be shorter or
- longer. I have had success from both
- cases of these strange files in the
- past, so if the .D64 archive you wish
- to unpack is of a non-standard size, a
- warning confirmation will be asked for
- instead of disallowing the operation.
-
- Also keep in mind that the
- destination disk is completely
- rewritten when the archive is
- unpacked. Any data previously on your
- destination disk will be erased.
-
- geoBEAP will unpack images on to
- formatted disks only. You MUST ensure
- that the destination disk is properly
- formatted before unpacking anything
- onto the disk. This allows the drive
- to access the individual tracks and
- sectors on which the image is created.
- The deskTop includes a format option
- for performing this operation on your
- destination disk.
-
- If you receive a "source drive
- error" during an unpacking process, it
- will almost certainly be due to an
- attempt to unpack a file which is not
- in the format designated in the main
- screen. A bad sector on the source
- disk may also be at fault.
-
- A "destination drive error" during
- an unpack will likely be due to an
- improperly formatted disk in the
- drive. You may correct this by
- reformatting the disk and re-trying
- the unpacking process.
-
-
- [CONCLUSION]
- [{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}{SHIFT-*}]
-
- I know you will find this program
- useful both in making use of the
- Commodore software available on the
- net in .D64 format, and in archiving
- your own disks. Remember again to be
- patient with the .BEP format, as the
- compression can be tedious. But it's
- worth the wait!
-
- BZ
-
-
-