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TidBITS#71/08-Jul-91
====================
Copyright 1990-1992 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. Publication, product, and company names may be
registered trademarks of their companies. Disk subscriptions and
back issues are available.
For more information send electronic mail to info@tidbits.uucp or
Internet: ace@tidbits.uucp -- CIS: 72511,306 -- AOL: Adam Engst
TidBITS -- 9301 Avondale Rd. NE Q1096 -- Redmond, WA 98052 USA
-----------------------------------------------------------------
Topics:
MailBITS/08-Jul-91
SevenBITS/08-Jul-91
Dirtier ROMs
Mac to Unix Backup
Reviews/08-Jul-91
MailBITS/08-Jul-91
------------------
For those of you struggling with MaxAppleZoom's recent demise, yet
more hope exists. Bob Boonstra came up with a patch that he's
found to work with both version 1.3 and 1.3.1 of MaxAppleZoom. It
requires a disk editor and a little technical knowledge, but is
cleaner than the other solutions. He writes, "After further
investigation, the following appears to be a more complete fix for
the bug (time bomb) in MaxAppleZoom. The patch does not require an
INIT and does not require changing the date. At least, it works
for me, on version 1.3 and 1.31, with dates out as far as I
checked (1999)."
For MAZ 1.3:
INIT 1 offset 572: change 02EA 3000 002C 65AE 43FA 0352
to 02EA 3000 002C 4E71 43FA 0352
INIT 1 offset 5CE: change 02EA 3000 002C 65AE 43FA 02DA
to 02EA 3000 002C 4E71 43FA 02DA
cdev -4064 offset C48: change 02EA 3000 002C 65AE 1428 0004
to 02EA 3000 002C 4E71 1428 0004
cdev -4064 offset CD0: change 02EA 3000 002C 65B0 5213
to 02EA 3000 002C 4E71 5213
For MAZ 1.31:
INIT 1 offset 570: change 02EA 3000 002C 65AE 43FA 0340
to 02EA 3000 002C 4E71 43FA 0340
INIT 1 offset 5CC: change 02EA 3000 002C 65AE 43FA 02C8
to 02EA 3000 002C 4E71 43FA 02C8
cdev -4064 offset C46: change 02EA 3000 002C 65AE 1428 0004
to 02EA 3000 002C 4E71 1428 0004
cdev -4064 offset CCE: change 02EA 3000 002C 65B0 5213
to 02EA 3000 002C 4E71 5213
"The patch substitutes a NOP for a conditional branch that follows
each of three CMP2 range checks. The value being checked, and the
range checked against, are computed by code so obscure (clever?)
that I don't know exactly what is being bypassed, or why it was
there, but it works for me. In each case, the patches to the INIT
prevents MAZ from not loading, while the patch to the cdev
prevents the Control Panel device from being disabled. Thanks to
Nobu Toge for pointing out the problem with the cdev, and to Scott
E. Lasley for sending me version 1.31."
TidBITS is available in many places online, but until recently has
not appeared on Delphi. Luckily for all of us, Mike Martin has
graciously volunteered to upload each week's issue to Delphi for
me (there' s a limit to how much I can do online personally). So
for those of you on Delphi who haven't seen TidBITS before,
welcome, and I hope you enjoy it. I'm sure Mike will forward
limited mail back to me via America Online, so if you have
comments or suggestions, please feel free to send them along (just
don't swamp him with mail - I'm sure he's got better things to do
than play mailman). Thanks for all your help, Mike! Now are we
missing any other online services? How about BIX, the BYTE
Information Exchange? Does anyone out there use BIX?
Although TidBITS is available in many electronic hideaways, it is
no longer available in ForumLink on America Online, simply because
ForumLink is no longer there. It was dissolved recently, and
although I don't know exactly why yet, I suspect it simply wasn't
getting enough traffic. Unlike most everything on the Internet,
AOL has to turn a profit, and if an area is unpopular, then it's
not helping make money. We're trying to find a new place for
TidBITS on America Online, but in the meantime, you can find new
issues in the HyperCard library there. If you want to help our
search for a new spot on AOL, send mail to me at Adam Engst and to
Tim Barwick (AFP TimB). He's the person who decided to drop
ForumLink. Ideally we could get a specific TidBITS section where
everything would be available and where each issue would appear
quickly.
Shawn Barnhart writes, "In TidBITS#69/01-Jul-91 you go on at
length about using Macs for video conferencing, lamenting the
current state of A/V compression and decompression. There has been
considerable discussion in rec.video.satellite over the past six
months or so of a new satellite TV service called SkyPix that is
supposed to provide 50 or so channels off of one satellite
transponder via some pretty tricky video compression. Supposedly
it's high-quality digital video, but evidently fast motion scenes
give the compression hardware a bit of headache, resulting in
jittery video. But it would seem like the _ideal_ technology for
video conferencing, where as you said in TidBITS, most of what you
see is a talking head. With this kind of technology you could use
just one satellite transponder and get 25 or so simultaneous video
conferences."
John Norstad writes, "Disinfectant 2.5.1 is a new release of our
free Macintosh anti-viral utility. Version 2.5.1 corrects an error
in the version 2.5 INIT which caused some programs (e.g.,
CompuServe Navigator) to crash on Macs using the Motorola 68000
processor (the 512KE, Plus, SE, Classic, and Portable.) Version
2.5.1 also corrects an error in the 2.5 program which could, at
least in theory, cause crashes or hangs during program startup or
when you try to do a scan. We apologize to everybody for the
inconvenience caused by these errors in the 2.5 release. The
errors are serious, and we strongly urge all Disinfectant users to
obtain the new version 2.5.1."
Information from:
Bob Boonstra -- jrb@mbunix.mitre.org
Mike Martin -- CWSoldier at AOL
Shawn Barnhart -- sbarnhar@mailbox.mail.umn.edu
John Norstad -- j-norstad@nwu.edu
SevenBITS/08-Jul-91
-------------------
A few weeks ago I talked briefly about Chris Derossi's
Hierarchical Apple Menu (HAM) and some of its competitors-to-be.
In the meantime I've heard some more information. Apparently,
there's some possibility that HAM will be built into a future
version of System 7, which accounts for the fact that Chris hasn't
released it yet. No word what the interface folks at Apple will
decide, but I'd like to see it sometime soon. On a related note,
apparently a pre-release version of Connectix's SuperMenu was
leaked to the public. Magic Apple, as it's called, has quickly
made the rounds of the Internet, appearing in Europe as well as
the US. According to author Fred Hollander, Magic Apple has some
bugs and isn't the sort of thing you want to run regularly.
SuperMenu will be commercial software, included with the System
7-savvy HandOff II 2.2, so if you have a copy of Magic Apple,
please delete it and wait for the stable release of SuperMenu.
Fred also promises that there will be many more features in
SuperMenu and HandOff II, so there will be incentive to buy the
final version. Current plans call for all registered users of
HandOff II to receive a free upgrade, so if you already have
HandOff II, you're all set.
If you like to have all sorts of information at hand and you have
the disk space to support your habit, you might check out a
FileMaker II database created by Kathryn Turpin on America Online.
Kathryn collected and edited all messages (other than the obvious
drivel) pertaining to System 7 that she could find on AOL from
10-May-91 to 13-Jun-91. Kathryn edited down the 7 MB of raw
material to 1049 records comprising about 2.6 MB. It is stored in
a self-extracting Compact Pro archive and takes about 125 minutes
to download, I presume at 2400 bips. Kathryn said that she will
probably continue her work collecting information on System 7 and
in August will upload an update to the database covering messages
after 13-Jun-91. It will include updated compatibility information
and possibly even extracts from magazine articles. So if you have
FileMaker II or Pro and want to collect information on System 7,
here's a good way to get started.
Connectix -- 800/950-5880
Information from:
Fred Hollander -- F.Hollander@applelink.apple.com.
Michael Costello -- costello@stx.uucp
Kathryn Turpin -- KathrynT at AOL
Dirtier ROMs
------------
For some time after I coordinated the NewROMs petition there was
no response at all. Henry Norr of MacWEEK said that he thought the
issue was dead until Apple issued a statement, and the only other
mention that our letter received came from Bob Cringely of
InfoWorld. In the last few days I've heard some more interesting
news, though it doesn't necessarily mean anything in terms of
getting new ROMs.
A few days ago I got a call from David Burmaster, a consultant
based in Cambridge, MA. He was irate about the problem of the
dirty ROMs and had gone so far as to send a letter to John Sculley
threatening a lawsuit. What interested me about his situation was
that Apple responded by saying that he could jolly well go out,
buy MODE32 from Connectix, and shut up. OK, so I doubt that Apple
actually worded it like that, but David was upset enough that it
might have been. We can see that Apple now officially recommends
MODE32. David checked with his lawyer to see what kind of chances
he had at winning a suit against Apple for misrepresenting the
abilities of the Mac II, IIx, IIcx, and SE/30. His lawyer said
that although he thought he could prove the misrepresentation in
court, it would take 18 to 24 months to get a court date and a
minimum of $5000 in legal fees to file. That's the first educated
legal opinion I've heard on the issue, and it's interesting that
it does put Apple in the wrong. David decided not to sue since it
made no financial sense and since Apple Legal is not a group you
want to tangle with unnecessarily.
A day or so later, I received another call (I normally get a lot
of email, but not too many telephone calls, so all this surprised
me), this time from Roy MacDonald of Connectix. He'd heard from a
MODE32 beta tester that I would be a good person to put on the
press list, so he called and asked me if I'd like a copy of MODE32
to work with. Mark H. Anbinder has already done a mini-review of
MODE32, but I'm never one to turn down software to test. I haven't
been using it for all that long, but it seems to work just fine. I
can't ask for virtual memory over 16 MB since I don't have that
much disk space available, but I do plan to clear up some more
space eventually. I'll keep people posted on my experiences with
MODE32. Thanks, Connectix!
A number of people have wondered why Apple couldn't just build the
32-bit cleanliness into System 7, as they did with A/UX. I've
heard that the 32-bit cleanliness worked a bit like virtual memory
under System 6. Someone at Apple said to the engineers, "How about
putting virtual memory in System 6?" and the engineers said,
"Can't be done." In January of 1989, Connectix introduced Virtual
1.0. So when work started on System 7 and virtual memory was
included, someone said, "How about 32-bit cleanliness, so users
can use lots of memory and virtual memory on those older
machines?" Once again the reply came back, "Can't be done in
System 7. A/UX is a different OS." Once again, several months
later, the wizards at Connectix came out with MODE32. Hmm,
starting to see a pattern here? Actually I doubt Apple will let
such an obvious gap happen again, if only to save face. Next time
somebody asks one of those questions, the answer will be, "Is
tomorrow soon enough?"
Lots of rumors have floated by about how Apple has some 32-bit
clean ROMs based on the IIfx ROMs or the IIsi ROMs, or something
like that. I've now heard that those rumors were true, though the
details are still to be completely discovered. Apparently, some
people poking around at Apple found a couple of boxes labeled "Mr.
Clean" and inside the boxes were a bunch of 32-bit clean ROMs.
These ROMs were never a product, are not a product, and may never
be a product, but when they were made, Apple distributed them to
developers who used machines with dirty ROMs and who needed to
test their code on the 32-bit clean ROMs. Essentially then, it
sounds like these clean ROMs got caught in some sort of
marketing/administrative snafu and ended up in a closet instead of
on a production line and in all of our hot little hands. Humph!
Information from:
Roy MacDonald -- connectix@applelink.apple.com
Pythaeus
David Burmaster
Mac to Unix Backup
------------------
In this day of limited resources, I especially enjoy hacking
together strange combinations of equipment to cover for an
expensive solution. Back when I worked for Cornell as a student
supervisor, we had a real problem with backups. Most of our Macs
were public and didn't have hard drives, but a couple of servers
had hard drives, and the operators' Macs were similarly equipped.
We seemingly had a negative hardware budget but floppy-based
backups were simply too much work.
Cornell has a fiber backbone (which is actually more complimentary
than it initially sounds :-)) so all of these Macs could easily
connect to the various mainframes. What I wanted to do, but never
managed to get the time nor the approval for, was to set up some
kind of automatic backup scheme whereby the Mac would upload all
its files to an account on one of the mainframes, and once up on
the mainframe, all the files would be included in the automatic
tape backups. I'd decided on using one of Cornell's Vaxen because
binary files uploaded to the IBM mainframe came back down intact
but missing the type and creator, not something you'd want to
recreate by hand. But, like many of my brainstorms (OK, so maybe
that's pushing it, but it was more than braindrizzle), the scheme
fell by the wayside, never to be implemented. The mainframe folks
probably would have hated me for it anyway.
Obviously someone at the University of Utah had the same idea, but
being slightly brighter than I, decided to implement it with Unix
machines and custom software. Succinctly named Dump (in the spirit
of Unix, they probably wanted to call it du, but that's taken
already), the program is a small MultiFinder program that talks to
the Unix client programs (also supplied in source code) that
actually perform the backups and restores. The Mac program
synchronizes the Mac's clock to the Unix machines clock, and you
can do full and incremental backups to whatever tape drive or
other backup media you have for the Unix machine. The Macintosh
program uses TCP, so you do need MacTCP from Apple (available from
APDA) for this to work. If you've got the necessary network anyway
but not MacTCP, you should probably get it because it provides
useful services and works with programs such as NCSA Telnet,
HyperFTP, and various NNTP servers.
Since many implementations of Unix require a recompile for a
program to work, the Unix client programs come only in source
code. This also allows sites with complex backup needs to modify
the code for their own purposes. Although the code is specifically
designed for Unix, and the scripts that manage the backups are
Unix shell scripts, you could theoretically write your own client
programs on a non-Unix host that supports TCP/IP.
Considering what this product will do for you, the price is quite
reasonable at $200 for an educational site and $250 for all other
sites. An educational site is a single campus, and all other sites
are considered to be a single location or mailing address. As I
said before, you do need MacTCP, along with a Mac running
MultiFinder under System 6.0 or newer (I don't know what the
compatibility status of MacTCP is with System 7 currently, but I
know there are some problems and an upgrade is planned). You also
get User, Installation, and Protocol Documentation, which is good,
since I have the feeling that this set of programs requires a good
bit of customization, for which documentation is essential.
For general information and a copy of the license agreement
contact:
Loretta Cruse
University of Utah
Center for Software Science
3190 Merrill Engineering Building
Salt Lake City, UT 84112
801/581-5017
FAX: 801/581-5843
cruse@cs.utah.edu
For technical information, contact:
Brian Sturgill
801/581-5591
brian@cs.utah.edu
APDA -- 800/282-2732 US -- 800/637-0029 CAN
408/562-3910 others
APDA@applelink.apple.com
Information from:
Brian Sturgill -- brian%harpo@hellgate.utah.edu
Reviews/08-Jul-91
-----------------
* InfoWorld
High Speed Modems, pg. 51
Hayes Ultra 96
Intel 9600EX
Microcom QX/4232hs
Motorola Codex 3260
NEC N9635E
Practical Modem 9600SA
Prometheus ProModem Ultima
UDS Fastalk MarFeb-42 bis
USR Courier V.32bis
Motorola Altair, pg. 60
Seiko Label Printer Plus, pg. 61
Avery Personal Label Printer, pg. 61
dBase IV Runtime Plus, pg. 61
References:
InfoWorld -- 01-Jul-91, Vol. 13, #26
..
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