Info-Mac 3/Info_Mac_1994-01.iso/Periodical/TidBITs/TidBITS#173

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TidBITS#173/19-Apr-93
=====================

 This issue of TidBITS brings an encore to our popular issue #104,
   which focussed on System 7. This time we have a bunch more
   System 7 frequently asked questions and answers, along with an
   editorial on the virtues of the now-obsolete Quadra 700, a
   report on a nasty and long-standing bug in the Hierarchical
   Filing System, neat tricks with internal CD-ROM drives, and a
   passel of MailBITS, including one especially for PowerBook
   100 and Duo owners.

 Copyright 1990-1993 Adam & Tonya Engst. Non-profit, non-commercial
   publications may reprint articles if full credit is given. Other
   publications please contact us. We do not guarantee the accuracy
   of articles. Caveat lector. Publication, product, and company
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   subscriptions and back issues are available - email for details.

 For information send email to [e-mail] or [e-mail]
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Topics:
    MailBITS/19-Apr-93
    CD Funkiness
    HFS Infestation
    Apple's 16-bit Solution
    System 7 FAQ
    Reviews/19-Apr-93

[Archived as /info-mac/digest/tb/tidbits-173.etx; 29K]


MailBITS/19-Apr-93
------------------
  We don't know how many of you have been with us since TidBITS#001,
  but those who have might realize that this issue marks the
  beginning of the fourth year of TidBITS. We would like to thank
  you all for making TidBITS a success. Over 50,000 people in 40
  countries read TidBITS each week, and it's all happened by word of
  net. The best way you can help us keep TidBITS growing is to tell
  a friend or two about TidBITS. It's free, it's easy, and you can
  get more information by sending email to: <[e-mail]>.
  Thanks again for an enjoyable three years, and here's hoping we
  can reach TidBITS#1000 and mess up my three-digit numbering
  scheme.


**WorldScript info** is available from Apple at 800/776-2333, so
  if you have questions about what script modules are available or
  how to get them, call that number and choose either 4 or 5 from
  the voicemail system. For the moment, only the Japanese language
  module (released last week) is available.


**ThoughtPattern Discontinued** --  Stephen Zagerman of Bananafish
  Software announced that the company has suspended all marketing
  and technical support for ThoughtPattern and is searching for a
  U.S. publisher. ThoughtPattern is an excellent free-form database
  that I use extensively to store bits of text from the net. We wish
  them luck in finding a new publisher. Bananafish Software --
  415/929-8135 -- [e-mail]


**TeleFinder 3.0** -- Spider Island Software, makers of the
  graphical BBS software TeleFinder, announced version 3.0 of the
  TeleFinder Group Edition Host software, which can be fully
  controlled via Apple events and Frontier or AppleScript.
  TeleFinder now uses a multi-server architecture that allows
  multiple nodes of the same BBS to run on separate, networked Macs,
  increasing the number of phone lines the BBS can support. An
  unlimited user package of TeleFinder retails for $425. Spider
  Island Software -- 714/66-9260 -- 714/730-5785 (BBS) --
  [e-mail]


**Sleeping Floppies** -- Rich Wolfson <[e-mail]>,
  author of The PowerBook Companion, passes on this helpful
  PowerBook hint. Apple tells you to shut down the PowerBook 100
  before attaching the external floppy drive. The reason for this is
  not because of electrical danger, but because even though the
  driver for the floppy drive loads from ROM, the PowerBook 100 sets
  a bit at startup that indicates whether or not a floppy drive is
  attached. If you boot without the floppy drive attached, that bit
  thinks there is no floppy drive, and attaching the floppy drive
  after the fact won't work. So, follow this procedure. Shut down
  the PowerBook, attach the floppy drive, boot the PowerBook again,
  and when it wakes up, put it back to sleep. You can now safely
  remove the floppy drive, and when you want to use the floppy drive
  again, assuming you _haven't_ rebooted, you can put the PowerBook
  to sleep and attach the floppy again. The Duos are even neater;
  you can attach the floppy at any time to a sleeping Duo because it
  has the floppy driver in ROM and also includes special docking
  features that allow you to attach a floppy drive (via the floppy
  adapter or MiniDock) when the Duo is asleep. Never attach an
  external floppy to any PowerBook while it is awake!


CD Funkiness
------------
  The internal AppleCD 300 may not have a headphone jack or volume
  control, but it's not entirely featureless. If you unplug the
  microphone you can record 10 seconds of sound from an audio CD in
  the Sound Control panel. The switching is automatic, but keep in
  mind that the files will be huge. When you do this, the Mac mixes
  the two stereo channels of CD audio to mono and converts them to
  8-bit sound, which is similar to what happens with the Quadra's
  "stereo" input jacks.

  In addition, you can boot from the internal CD-ROM, which should
  significantly ease installing new Systems on those machines. In
  fact, Apple provides the boot CD **instead of** a set of System
  disks. Apparently Apple set this CD up with At Ease to make it
  even easier to use. The CD contains disk images of the System
  disks, so users can also make a set of backup disks, just in case.
  Even though booting from CD will ease the process for users,
  technical support people should be aware of this difference
  between normal Macs and Macs with internal CD-ROM players.

  Information from:
    Craig O'Donnell -- [e-mail]
    Eric Apgar -- [e-mail]


HFS Infestation
---------------
  I don't know if there is a Pulitzer Prize in computer journalism,
  but if there were I'd nominate Ric Ford of MacWEEK for this year.
  Fighting with problems on his Macs, Ric tracked down a subtle and
  confusing bug that has lurked for years within HFS, the
  Hierarchical Filing System. Others had noticed the bug, but as
  near as I can tell, until Ric came along, no one figured out what
  was happening clearly enough and informed Apple at an official-
  enough level for the bug to be recorded, tracked, and
  exterminated.

  I haven't personally seen the bug, but its symptoms are that when
  your Mac crashes, it flashes the question mark rather than
  rebooting if the affected disk is a boot disk. If the affected
  disk is not a boot disk, the Finder won't think it's a Macintosh
  disk and will ask you if you want to Eject or Initialize. Needless
  to say, this is quite noticeable, not to mention irritating beyond
  belief.

  Here's what's happening. When the Mac starts up, it sets a "dirty"
  flag in the volume information block of each volume. If you
  shutdown gracefully, the Mac clears that flag and all works fine.
  If you crash, the Mac sees the dirty flag on the subsequent boot,
  and checks the disk's catalog and extents files for damage (it
  usually finds not damage). Under specific circumstances, the Mac
  blows that check and thinks the disk is indeed damaged, when in
  fact all that has happened is that the Mac made an incorrect
  calculation.

  The only fix is to boot with an emergency floppy from Central
  Point's MacTools, Norton Utilities, or Fifth Generation's Public
  Utilities and then have the disk recovery program remount the
  disk, clearing that improperly set flag. Note that these programs
  will not report any problems in the process because they don't
  know about the bug; they just know how to clear that dirty flag.

  I could describe the specific circumstances necessary to release
  the bug, but there's no point. Instead, let me point you to a free
  program that Central Point Software's Dave Camp created on Ric's
  suggestion. Called Disk Bug Checker, the program can tell you how
  likely it is that a hard drive will suffer from the bug. Disk Bug
  Checker, which is available on most online services, including
  sumex as </util/disk-bug-checker-11.hqx>, checks the size of your
  catalog and extents files along with your partition's
  fragmentation level and then tells how susceptible that disk is to
  the bug. Small partitions are seldom, if ever, affected (which may
  account for the life-span of this particular bug), and the Disk
  Bug Checker claimed I wouldn't be susceptible until I had 34,817
  fragments. That's pretty unlikely.

  The best way to avoid the bug in the future if you're experiencing
  it is to back up your disk (carefully!) and use the Finder's Erase
  Disk command (from the Special menu) on that disk, restoring your
  files when you're done. The Finder will rebuild the catalog and
  extents files, and in the process may change them slightly from
  your original formatting program. That may eliminate the problem
  in some cases, especially for volumes around 85 MB to 95 MB, when
  the allocation block size is 1.5K. If using Erase Disk doesn't
  help, reformat your hard disk with a different formatting program
  or with a slightly different partition size, say plus or minus
  100K. That will change the size of the catalog and extents files,
  which will in turn change your susceptibility to the bug. Apple
  knows about the bug now, so we can hope that they will fix it for
  good in the future.

  Information from:
    Ric Ford, MacWEEK -- [e-mail]

  Related articles:
    MacWEEK -- 15-Feb-92, Vol. 7, #7, pg. 74
    MacWEEK -- 08-Mar-92, Vol. 7, #10, pg. 58


Apple's 16-bit Solution
-----------------------
  by Glenn Fleishman -- [e-mail]

  I was saddened to read of the Quadra 700's demise. Once again,
  Apple has cancelled a model which, despite clear advantages,
  doesn't fit into their price and product line structure. In the
  process, Apple complicated the issue of cheaply achieving 24-bit
  color.

  When Apple introduced the Quadra 700 and 900 as the first 68040-
  based Macintoshes, there was much consternation about price,
  features, upgrades, and compatibility. The 700 and 900 feature
  much the same technology, with Ethernet, room for 2 MB of video
  RAM (VRAM), a 25 MHz 68040 with built-in math coprocessor, and
  improved access to internal components. Apple quickly replaced the
  900 with the 950 (a 33 MHz 68040), making the distinction between
  models more apparent. With some price cuts and the passage of
  time, most pricing and compatibility issues disappeared.

  Apple's introduction of the IIvx last fall, followed recently by
  the Centris 610 and 650 (16 MHz and 25 MHz 68040-based machines)
  tarnished the Quadra 700's sheen. The new Quadra 800, which has a
  similar price and footprint to the 700, but at 950 speeds, also
  deadened the impact of cutting the 700.

  However, everyone has ignored the fact that the Quadra 700 has a
  feature not shared by the Quadra 800 or the two Centris models:
  room for 2 MB of VRAM. Although this seems minor, I believe it to
  be a crucial underestimation by Apple of the necessity for 24-bit
  color in the near future. This is primarily true for users of
  Kodak's Photo CD and color flatbed and film scanners, with lesser
  importance for users of multimedia and CD-ROM-based video. The
  Quadra 800 and Centris models, as well as the IIvx, LC, LC II, LC
  III, and Duo Dock for the PowerBook Duos all max out at only 1 MB
  of internal VRAM. This amount of VRAM provides 32,768 colors, or
  16-bit video. Only the Quadra 950 can still do 24-bit video
  without an additional video card.

  Apple's rationale is two-fold. First, 16-bit video is more than
  adequate for video replay and most multimedia. Although full-
  screen, full-motion, 24-bit-per-pixel video capture is possible
  with such devices as SuperMac's Digital Film board, for the sake
  of compression and sanity, most video is sampled down to 16 bits,
  or initially digitized at that bit depth. No more than 16 bits is
  necessary for representing the dynamic range (or numbers of
  discrete colors) that occur in a standard video signal. Therefore,
  you achieve a great savings in storage and an increase in
  digitizing and playback speed.

  Second, Apple believes that few non-experts can distinguish
  between 16- and 24-bit video (see May-93 MacUser article on large
  monitors for a taste test they performed). Kodak Photo CD actually
  uses a 16-bit colorspace (the PhotoYCC colorspace), which is
  compressed from and decompressed into the conventional 24-bit RGB
  colorspace.

  I maintain that Apple's rationale, although valid in general
  today, is not a significant enough reason to limit users to 1 MB
  VRAM, and may change in the near future.

  On the first point, although today's standard is NTSC in the U.S.
  and PAL and SECAM abroad, none of which allow for terrific dynamic
  range, future standards will allow for substantially crisper
  displays and broader ranges and distinctions of color. Coupled
  with this is the rapidly decreasing cost of storage and rapidly
  increasing speed of retrieval, currently major limitations in
  video storage.

  On the second point, I feel that you don't have to be an expert to
  appreciate 24-bit video. I have spent the last 20 months working
  mostly on systems with 24-bit video, and the distinction that I
  see between those systems and others running 16-bit video is
  substantial enough for anyone making a cursory comparison to
  notice. People doing serious illustration using either a
  PostScript language drawing program like Adobe Illustrator or a
  bitmap-oriented program like Fractal Design Painter, or doing any
  sort of photographic manipulation, correction, or compositing in
  Adobe Photoshop, must have 24-bit video. Although you may see
  smooth blends and crisp results on screen in 16-bit color, you
  will have no guarantee of the actual output colors or blends. The
  new calibration products for the truly serious that are about to
  come on the market (Kodak's ColorSense system, and products by
  Agfa, EFI, and others) essentially require 24-bit color.

  Apple ostensibly is increasing the market potential of their
  products by eliminating some circuitry and a few SIMM mounts. I
  can't imagine this saves more than $15 per machine - probably less
  since the parts exist in other Macs. Engineering costs are
  negligible because Apple already designed the Quadra 700, 900, and
  950. By the time you go through mark-ups, these missing SIMM
  mounts and circuitry might translate to no more than $50 on the
  price sticker.

  For the user, however, 24-bit color is more expensive. The
  internal circuitry in the Quadra 700, 900, and 950 is estimated at
  approximately 75 percent of the speed of the Apple 8*24GC video
  display & QuickDraw accelerator card (which displays 24-bit color
  only on 13" monitors; it drops to 16-bit color on 16" monitors).
  On the other hand, using onboard video equipped with enough VRAM
  slots, with the addition of six 256K VRAM SIMMs at a street price
  of $150 total, the user gains 24-bit on a 13" or 16" monitor
  (including the capability to use third party monitors), avoids
  using a NuBus slot, and achieves speeds comparable to a $450 to
  $600 video card from SuperMac, Radius, or RasterOps. (The Quadra
  900 and 950 require only an additional four SIMMs or $100, as they
  comes with 1 MB of VRAM installed.)

  Although video cards from third parties often include extra
  features like automatic dimming, multiple video modes or pixel
  pitches, and, with the E-Machines 16" video card, even a 10BASE-T
  Ethernet port, many sophisticated users never use these features
  (humbly, I include myself in that group).

  To give you the same capacity as a Quadra 700 (two slots and
  24-bit video on a 16" video), the Quadra 800 would cost an
  additional $450 to $600 and would lose a slot. The net difference
  after subtracting the VRAM cost is $300 to $450 (or 10+% of the
  cost of the machine extra) for what might have added $50 to the
  machine's cost.

  In an effort to reduce cost, I believe Apple made it harder for
  many individuals to achieve 24-bit-hood. With the increasingly
  lower cost of the entire Apple product line in conjunction with
  lower prices for scanners and the advantages of Photo CD, it
  becomes harder for users to achieve 24-bit color without exceeding
  their budgets. The elimination of the Quadra 700 provides an easy
  way for Apple to slip the Centris computers in the middle of the
  product line since the Centris 650 and the Quadra 700 are
  virtually identical in performance. Ultimately, users suffer by
  their lack of inexpensive expansion. The beauty of Apple's newer
  machines, such as the PowerBook Duo and Duo Dock combination, is
  that you can have expandability without paying for it until you
  need it. Now you'll have to pay more.

  The good news is that Apple is clearing out Quadra 700s at prices
  50 percent or more below what they were six months ago. The Quadra
  700 in the 4/0 configuration is available for $2,000 street price
  versus $3,800 on 01-Sep-92. A Quadra 700 in the 4/200
  configuration is $2,600 street price versus the Centris 650 8/230
  for $3,100. Remember the above calculations show that if you need
  24-bit video, the 700 4/200 would be $2,750 versus at least $3,550
  for the equivalent Centris 650 with a 24-bit video card.


System 7 FAQ
------------
  System 7 has been out for several years now, and although some
  people have yet to switch to it (mostly for incorrect reasons or
  because it's too much trouble), System 7 is probably the most
  common System version in use. Apple released System 7.1 last fall,
  but the modules that make 7.1 a compelling upgrade have only begun
  to appear. In the meantime, here are some frequently asked
  questions (and answers) about Apple and System 7 that we did not
  cover way back in TidBITS#104/System 7. If you use System 7 and
  have questions beyond these, please check that issue because it
  answers a ton of common questions.


**Errors and Solutions**

Q1) My System is taking up way too much RAM. What is wrong?

A1) You need to turn on 32-bit addressing. Under 24-bit addressing
  (this is what you are in when 32-bit addressing is off) all RAM
  above 8 MB is mapped to the System but not used (nice interface!).
  Warning: first make sure hard disk drivers, NuBus cards, Control
  Panels, extensions and all applications are 32-bit compatible!


Q2) What should I do if I come across really weird system errors
  like "Bad F-Line," "Bus Error," or "Error of type 25?"

A2) If 32-bit addressing and/or Virtual Memory are on, try turning
  them off, restarting, and testing your system. If the problems go
  away, you may have an extension or application that is
  incompatible with 32-bit addressing or Virtual Memory. If strange
  problems persist, try disconnecting your SCSI chain. If strange
  problems persist, try a clean install (boot with Disk Tools, put
  your System and Finder in the Trash, empty the Trash, and then
  boot again with your first Install Disk [usually Install 1]. If
  you run System 7.1, remove your Fonts folder from the System
  Folder as well when you are booted under Disk Tools.). If strange
  problems still persist, backup your files, reformat the hard disk,
  and restore your files. If strange problems still persist, as a
  last resort try other disks, try other SIMMs, re-seat your NuBus
  cards in different slots, or have diagnostics run on the hardware.
  Also, do call the appropriate technical support line (or send
  email to companies that do online tech support) before you go to a
  great deal of trouble re-installing things. Sometimes support
  can't help at all; sometimes support can save you a great deal of
  time.


Q3) When I add fonts to my System I get an error message saying
  the System file is damaged. Sometimes when I double click a
  suitcase of bitmaps I get the same message. What is wrong?

A3) The bitmaps in the system or in the suitcase have been
  compressed with Suitcase's Font Valet or are "damaged" according
  to System 7. If the System file is damaged and you have another
  source for the fonts installed in the System, boot from a floppy,
  trash the System file, empty the trash, reinstall with the
  installer to build a new System file, and then reinstall the
  fonts. If the fonts are bad, System 7 will not let you install
  them. If you have no backup of fonts INSIDE a damaged suitcase or
  damaged System file, put Font/DA Mover 4.1 on your hard disk, boot
  from a floppy with System 6.0.x, open the Font/DA Mover, then hold
  down the option key, click open, and you will be able to open the
  "damaged" System or suitcase and copy the fonts to another
  suitcase. Split up the suspect fonts into smaller suitcases,
  reboot under System 7 and try opening the suitcases. By trial and
  error you can determine which fonts the Mac is choking on.


Q4) What should I do if Get Info windows and some other windows
  display  the wrong font?

A4) Your system font is messed up. The setting for the system font
  is stored in PRAM (Parameter RAM). To fix the problem zap your
  PRAM by holding down command-option-p-r (be sure Caps Lock is
  off!) at boot time, and then let go at the second startup chime.


Q5) My desktop patterns are black & white or messed up. What do I
  do?

A5) Use ResEdit and copy an unmodified ppat resource from the
  System 7 disks to your System file OR boot from a floppy, trash
  the System file, and reinstall.


Q6) With File Sharing on, why can't I eject removable media even
  when it is not shared?

A6) Actually, it is shared for the owner. As owner you can log in
  and have access to all volumes. To eject removable media, turn off
  File Sharing or mount it after File Sharing has already started.
  AppleShare 3.0 does support unmounting removable media. Also look
  for a free utility from Apple called UnMountIt, which I haven't
  seen on the Internet yet, but which was uploaded to CompuServe's
  MACDEV libraries.


Q7) File Sharing cannot be enabled. What could be wrong?

A7) There has to be some free space on each volume (to be safe,
  have 1 MB free), the hard disk driver may need to be updated, the
  Users & Groups Data File may be corrupt (trash it and restart),
  the PDS files may be bad (trash them, they are in the File Sharing
  folder inside Preferences), the invisible AppleShare PDS file may
  be corrupted (make it visible with DiskTop or ResEdit and then
  trash it), or there may be a bad block, which means you'll have to
  backup your files, reformat the hard disk, and restore your files.


**General Questions**

Q8) Why don't I get 8-bit icons for floppies and CD-ROMs?

A8) Because of the way the drivers are written. Then why is there
  an 8-bit icon for floppies? For dialogs like the one used in the
  Installer. Look for a freeware extension from Andrew Welch called
  Discolour - it will give you nice icons for floppies.


Q9) How do I avoid rebuilding the desktop files when switching
  between System 6 and System 7?

A9) Get the Desktop Manager extension and load it in your System
  6.0.x System Folder. It's part of AppleShare 2.0.1, part of the
  Oscar package at ftp.apple.com, and part of the Eudora mail
  package. If you don't have FTP access, get someone that has FTP
  access to get it for you or get AppleShare 2 (which is no longer
  sold).


Q10) What's the email address for Apple?

A10) There is no general email address. For bug reporting you can
  send email to <[e-mail]>. For complaints and
  information, but NOT technical support call the Apple Assistance
  Center at 800/776-2333.


Q11) What are files in the image format?

A11) They are files in the DiskCopy format. Get DiskCopy or
  MountImage to work with them.


Q12) How do I do a network install?

A12) Make a "Network Install" folder on your hard disk. Then
  insert each disk necessary for the install, and drag the floppy
  icon on top of the "Network Install" folder. This will create
  folders inside the "Network Install" folder. Move the Installer
  and install script out of the "Install 1" folder to the top level
  of the "Network Install" folder. Then share the "Network Install"
  folder and launch the installer over the network.


Q13) What printer driver do I use with my LaserWriter IISC under
  System 7?

A13) The 7.0 Personal LaserWriter SC driver on the Printing Tools
  disk.


Q14) Why does Virtual Memory create a file the same size as total
  memory? Why not a file the size of the difference between physical
  RAM and total RAM?

A14) Because it's a gazillion times faster. [Connectix does not
  agree and Virtual 3.0 has a Disk Saver mode that uses only the
  space you request.]


Q15) Is there a System 7 compatible spooler for the ImageWriter?

A15) Yes, SuperLaserSpool 3.0 from 5th Generation Systems.
  800/873-4384. This works with all four flavors of the ImageWriter
  (serial or AppleTalk with the regular ImageWriter or the
  ImageWriter LQ).


Q16) Where can I get ResEdit?

A16) ftp.apple.com, some user groups or APDA (800/282-2732 from
  the US, 800/637-0029 from Canada, or 408/562-3910 for
  international). APDA = Apple Programmers & Developers Association.


Q17) I've heard there is unused space on my Apple HD? How can I
  use it? Why is there unused space?

A17) With Apple HD SC Setup you can see some information about the
  hard disk. Click Partitions, click Custom, and then click Details.
  There is usually unused space on Apple hard drives; you will see
  gray space in the bottom of your partition map with the size to
  the left. If you reformat your hard drive you can use this unused
  space. Backup your entire disk then boot from a floppy containing
  Apple HD SC Setup, click Partition, select your main Macintosh
  volume and delete it, click Custom, click and drag from just below
  the top partition all the way to the bottom, select Macintosh
  volume in the resulting dialog and then you will not be wasting
  any space on your hard drive. There is unused space because Apple
  gets hard disks from various vendors (various sizes) and wants
  them to look the same after the default formatting. So all 40 MB
  hard disks are formatted at a certain size; if the drive happens
  to really be 42 MB, there is 2 MB of unused space.


Q18) Sometimes I see a folder named Move&Rename at the top level
  of my hard disk. What is that?

A18) It is a folder created and used by System 7 File Sharing. If
  you turn off File Sharing the Macintosh will delete it. Just
  ignore it and do not save anything into it as the folder is
  invisible!


Q19) When I press my shift key five times in a row my machine
  whistles at me and a funny little bracket shows up in the menu
  bar. Do I have a virus?

A19) It's a feature of Easy Access, a Control Panel that allows
  people allergic to mice to use the keyboard instead.


Q20) I have System 7, should I upgrade to 7.0.1?

A20) For 98% of people - don't bother. The changes are minor and
  the new SANE routines which speed up a very few math-intensive
  applications only help people with IIci's or better and only help
  applications that use the SANE routines rather than using the FPU
  directly. If you really want it, it's available through
  ftp.apple.com, dealers, user groups and online services. More
  importantly, get the System 7 Tune Up 1.1.1.


Q21) Should I upgrade to 7.1?

A21) Yes, if you like the idea of a separate folder for fonts,
  instead of storing them in the System file. Yes, if you don't want
  to worry about what version of Tune Up you have installed since
  7.1 includes the various Tune-Ups built in. Yes, if you are
  excited about future add-ons (like OCE and AppleScript) and want
  to be ready now. No, if you have a 32-bit dirty Mac (like a II,
  IIcx, IIx, or SE/30), use more than 8 MB of RAM and don't want to
  worry about what software to use in order to access all of your
  RAM (see TidBITS #167_ for more info). No, if you don't want to
  pay for the upgrade. No, if your Mac works great now and you don't
  need any of the Yes reasons just yet.


Reviews/19-Apr-93
-----------------

* MacWEEK -- 05-Apr-93, Vol. 7, #14
    Retrospect 2.0 -- pg. 49
    A.M.E. 2.1 -- pg. 52
    Bernoulli Mac Floptical -- pg. 54
    Rancho Tech Floptical -- pg. 54
    COPYright & COPYright Pro -- pg. 54


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