TweetFollow Us on Twitter

Dec 94 Editor's Page
Volume Number:10
Issue Number:12
Column Tag:The Editor’s Page

The Editor’s Page

By Scott T Boyd, Editor

Getting On The Net

I work out of my home here on the Pacific coast. With five phone lines, five computers on an Ethernet, three modems, two cats, an eighteen-month-old daughter, a wife, and views of the ocean and a mountain, we may be looking at something like the home office of the future. No home office could be complete, though, without getting wired, and that takes more than caffeine.

Since January, I’ve experimented with a variety of schemes for connecting. Ihave all sorts of accounts on all the online services, but none of them qualify as “wired”. Getting connected, in this case, means plugging in to the Internet.

I started off by doing what all the Apple escapees seemed to be doing - Igot a Netcom PNC (Personal Network Connection). Icould use MacTCP and run all of my favorite Macintosh apps. It also came with a unix shell account and an e-mail address. It cost $17/month plus an hourly fee for every hour past some allotment.

Flocking to a net provider along with a few bazillion other subscribers isn’t always the best plan. They were growing so fast that they couldn’t add equipment, staff, and phone lines fast enough. Ifound a good excuse to find a new provider - we moved north to Montara (between Half Moon Bay and San Francisco).

Once here, I hooked up with QuakeNet. They’re small, know their stuff, and answer the phone when something goes wrong (hey, it’s networking; something’s bound to go wrong from time to time). Now Ipay $85/month for a 14.4Kbps full-time connection. It’s a local call, so Ican keep my modem connected constantly for the cost of a residential phone line. Ifind myself talking on the phone less, and I expect rates to drop as competition heats up. It’s great to have an unmetered connection - I never have to think about what it’s costing me to stay connected.

I’ve teamed up with a few other home office workers, and we’re finding all sorts of ways to use the net. We’ve tunneled AppleTalk to share printers and servers. We’ve set up FTP and chat servers so we can talk to each other and exchange files. We’ve also experimented with sending voice over the net. With a little work, we’ll be able to talk over 14.4 connections, and that will also reduce our phone bills.

We got our start using MacPPP (similar to SLIP) to make a point-to-point serial connection to our providers. It’s no more complex to configure than MacTCP - straightforward, but not trivial. A couple of us are now using MachTen (Tenon’s unix product for Macs) to make the PPP connection and do ip routing. That’s more fun because now Ican use any of the machines on my net, as well as offer dialup service to friends in the area. It’s also a lot more work because it involves configuring and administering a unix box (e.g. sendmail, FTP, DNS, accounts, firewalls, etc ). You haven’t seen bad documentation until you’ve tried to run a unix system. Flexibility breeds complexity. Turnkey it’s not.

I’d like to hear from those of you who have gotten on the net and found fun ways to use it. I’d especially like to hear from those of you who have written Macintosh-based tcp/ip software to take advantage of the net. The Net offers more opportunity than just running Mosaic.

Software Piracy

Have you ever wondered about those numbers we see from the Software Publishers Association and the Business Software Alliance about software piracy? BSA claims that global piracy costs over $12 billion dollars each year. Where do they get these numbers? They throw them around as if they had a basis for their claims. If so, why don’t they document how they arrive at those numbers? Might it be that the numbers wouldn’t impress us so much if we knew how they were derived?

Piracy certainly exists, but $12 billion? They do our industry a disservice by making unsubstantiated and unbelievable claims. That doesn’t do any of us any good in the long run. Many of you work for member companies; your opinion might help these groups wise up.

Do You Do Windows?

We all hear that Windows is going like gangbusters. It’s hard to tell whether it’s hype or excitement, but there sure seems to be a lot of interest in Windows95 (formerly known as the late Chicago). Have you felt the urge or the need to do Windows?

I know developers who have made the switch so completely that they don’t do Macintosh any more. They couldn’t see missing out on the opportunity to sell their products into the much larger market that Windows seems to offer. They aren’t doing Macintosh mostly because they’re small and can’t afford to split their efforts.

Other developers have decided to add Macintosh to the list of platforms they support. How else can you increase your revenue once you have established how much Windows marketshare you can grab? These vendors see the addition of a platform as a simple money decision. Hire one or two Mac programmers and have them port the Windows code. No big deal (but no love for the platform, either).

Others have successfully built a product and a market on the Macintosh. Having worked hard to own as much market share on the Macintosh as they could, they see expanding into the Windows market as a sensible way to grow the company. Besides, by the time they’ve grown to this point, they have customers clamoring for a Windows version. In one case, it’s become more than twice as hard to maintain a product on two platforms (what do you do when a Mac technology isn’t available on Windows?), with no more revenue than expected staying with Macintosh alone. They owned their market; people bought Macs just to use their product. Putting it on Windows gave those people a choice of platform, but didn’t draw in new customers. Not all products enjoy this position, so mileage no doubt varies from company to company.

We’d like to hear from you. Let’s get some of your stories about comings, goings, reasons, and outcomes.

Sorry About The Confusion

Last month I wrote about EvenBetterBusError - what it is, what it does, and why software that doesn’t work with it is buggy. Unfortunately, we experienced a glitch in the prepress process, and wound up with source code lines that wrapped, making the assembly source listing confusing and hard to read. Worse yet, two good quotes got pushed off the page!

Since the issue of reading from or writing to memory location 0 is so important, here it is again. Greg Marriott wrote EvenBetterBusError (aka EBBE). It puts a 4-byte value into memory location 0 which will generate a bus error or an illegal instruction on any Macintosh if someone dereferences a nil pointer or if they jump to 0. EBBE periodically checks to see whether someone has written to location 0 (probably using a NIL pointer). If so, it drops into the debugger and says, “Write to NIL.” EBBE can help you make your software better.

Here’s reconstituted code which shows you everything that EvenBetterBusError does. It’s pretty simple. It installs a VBL task which periodically checks location 0, drops into the debugger if it needs to, and stuffs $50FF8001 back into location 0.

It’s never ok to write to location 0, nor is it ever ok to dereference a NIL pointer. Code that does these things is buggy.


/* 1 */
        BRA.S   InstallVBL
BeginCodeBlock
VBLRecord   
  DC.L 00000000,0001  ; QElemPtr,  queue type (1==VBL queue)
  DC.L 00000000       ; ptr to VBL code
  DC.W 0001,0000      ; timeout count &phase count
        MOVE.L  $0,D0               ; put location 0’s contents into 
D0
        ANDI.L  #$7FFFFFFF,D0       ; strip the high bit
        CMPI.L  #$50FF8001,D0        ; see if someone wrote over it
        BEQ.S   SkipDebugStr        ; if not, everything’s ok
        CMPI.L  #$40810000,D0       ; see if it’s ProcMgr’s safe value
        BEQ.S   SkipDebugStr        ; if so, everything’s ok
        PEA     BuggyCodeWroteToNIL
        _DebugStr
SkipDebugStr 
        MOVE.L  #$50FF8001,$0       ; put a bus error value at $0
        MOVE.W  #$0001,$000A(A0)    ; reset the VBL timer
        RTS
EndOfCodeBlock

BuggyCodeWroteToNIL   DC.B 'Write to NIL',00
SizeOfCodeBlock  equ EndOfCodeBlock-BeginCodeBlock
          
InstallVBL 
        MOVEQ   #SizeOfCodeBlock,D0 ; allocate a block for code & data
        _NewPtr  ,sys       ; make a block in the system heap
        MOVE.L  A0,-(A7)            ; remember this block's address
        MOVEA.L A0,A1
        LEA     VBLRecord,A0        ; a static copy of our VBL record
        MOVEQ   #SizeOfCodeBlock,D0 ; the size of the VBL code & data
        _BlockMove            ; copy from INIT into sys heap block
        MOVEA.L (A7)+,A0            ; the system heap block
        PEA     $000E(A0)           ; addr of ptr to VBLin VBL record
        MOVE.L  (A7)+,$0006(A0)     ; stuff ptr to VBLcode
        _VInstall
        MOVE.L  #$50FF8001,$0       ; put a bus error value at $0
        RTS

Food For Thought

Post mortem debugging can be fun, especially when you get to see the victim die over and over again in slow motion!

- Greg Marriott

Seen On The Net

Macintosh, for those who can see through Windows.

- reported by baileyc@beetle.com

Dilbert
by Scott Adams

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Microsoft Remote Desktop 8.0.16 - Connec...
With Microsoft Remote Desktop, you can connect to a remote PC and your work resources from almost anywhere. Experience the power of Windows with RemoteFX in a Remote Desktop client designed to help... Read more
Spotify 1.0.4.90. - Stream music, create...
Spotify is a streaming music service that gives you on-demand access to millions of songs. Whether you like driving rock, silky R&B, or grandiose classical music, Spotify's massive catalogue puts... Read more
djay Pro 1.1 - Transform your Mac into a...
djay Pro provides a complete toolkit for performing DJs. Its unique modern interface is built around a sophisticated integration with iTunes and Spotify, giving you instant access to millions of... Read more
Vivaldi 1.0.118.19 - Lightweight browser...
Vivaldi browser. In 1994, two programmers started working on a web browser. Our idea was to make a really fast browser, capable of running on limited hardware, keeping in mind that users are... Read more
Stacks 2.6.11 - New way to create pages...
Stacks is a new way to create pages in RapidWeaver. It's a plugin designed to combine drag-and-drop simplicity with the power of fluid layout. Features: Fluid Layout: Stacks lets you build pages... Read more
xScope 4.1.3 - Onscreen graphic measurem...
xScope is powerful set of tools that are ideal for measuring, inspecting, and testing on-screen graphics and layouts. Its tools float above your desktop windows and can be accessed via a toolbar,... Read more
Cyberduck 4.7 - FTP and SFTP browser. (F...
Cyberduck is a robust FTP/FTP-TLS/SFTP browser for the Mac whose lack of visual clutter and cleverly intuitive features make it easy to use. Support for external editors and system technologies such... Read more
Labels & Addresses 1.7 - Powerful la...
Labels & Addresses is a home and office tool for printing all sorts of labels, envelopes, inventory labels, and price tags. Merge-printing capability makes the program a great tool for holiday... Read more
teleport 1.2.1 - Use one mouse/keyboard...
teleport is a simple utility to let you use one single mouse and keyboard to control several of your Macs. Simply reach the edge of your screen, and your mouse teleports to your other Mac! The... Read more
Apple iMovie 10.0.8 - Edit personal vide...
With an all-new design, Apple iMovie lets you enjoy your videos like never before. Browse your clips more easily, instantly share your favorite moments, and create beautiful HD movies and Hollywood-... Read more

Use Batting Average and the Apple Watch...
Batting Average, by Pixolini, is designed to help you manage your statistics. Every time you go to bat, you can use your Apple Watch to track  your swings, strikes, and hits. [Read more] | Read more »
Celebrate Studio Pango's 3rd Annive...
It is time to party, Pangoland pals! Studio Pango is celebrating their 3rd birthday and their gift to you is a new update to Pangoland. [Read more] | Read more »
Become the World's Most Important D...
Must Deliver, by cherrypick games, is a top-down endless-runner witha healthy dose of the living dead. [Read more] | Read more »
SoundHound + LiveLyrics is Making its De...
SoundHound Inc. has announced that SoundHound + LiveLyrics, will be one of the first third-party apps to hit the Apple Watch. With  SoundHound you'll be able to tap on your watch and have the app recognize the music you are listening to, then have... | Read more »
Adobe Joins the Apple Watch Lineup With...
A whole tidal wave of apps are headed for the Apple Watch, and Adobe has joined in with 3 new ways to enhance your creativity and collaborate with others. The watch apps pair with iPad/iPhone apps to give you total control over your Adobe projects... | Read more »
Z Steel Soldiers, Sequel to Kavcom'...
Kavcom has released Z Steel Soldiers, which continues the story of the comedic RTS originally created by the Bitmap Brothers. [Read more] | Read more »
Seene Lets You Create 3D Images With You...
Seene, by Obvious Engineering, is a 3D capture app that's meant to allow you to create visually stunning 3D images with a tap of your finger, and then share them as a 3D photo, video or gif. [Read more] | Read more »
Lost Within - Tips, Tricks, and Strategi...
Have you just downloaded Lost Within and are you in need of a guiding hand? While it’s not the toughest of games out there you might still want some helpful tips to get you started. [Read more] | Read more »
Entertain Your Pet With Your Watch With...
The Petcube Camera is a device that lets you use live video to check in on your pet, talk to them, and play with them using a laser pointer - all while you're away. And the Petcube app is coming to the Apple Watch, so you'll be able to hang out with... | Read more »
Now You Can Manage Your Line2 Calls With...
You'll be able to get your Line2 cloud phone service on the Apple Watch very soon. The watch app can send and receive messages using hands-free voice dictation, or by selecting from a list of provided responses. [Read more] | Read more »

Price Scanner via MacPrices.net

Intel Compute Stick: A New Mini-Computing For...
The Intel Compute Stick, a new pocket-sized computer based on a quad-core Intel Atom processor running Windows 8.1 with Bing, is available now through Intel Authorized Dealers across much of the... Read more
Heal to Launch First One-Touch House Call Doc...
Santa Monica, California based Heal, a pioneer in on-demand personal health care services — will offer the first one-touch, on-demand house call doctor app for the Apple Watch. Heal’s Watch app,... Read more
Mac Notebooks: Avoiding MagSafe Power Adapter...
Apple Support says proper usage, care, and maintenance of Your Mac notebook’s MagSafe power adapter can substantially increase the the adapter’s service life. Of course, MagSafe itself is an Apple... Read more
12″ Retina MacBook In Shootout With Air And P...
BareFeats’ rob-ART morgan has posted another comparison of the 12″ MacBook with other Mac laptops, noting that the general goodness of all Mac laptops can make which one to purchase a tough decision... Read more
FileMaker Go for iPad and iPhone: Over 1.5 Mi...
FileMaker has announced that its FileMaker Go for iPad and iPhone app has surpassed 1.5 million downloads from the iTunes App Store. The milestone confirms the continued popularity of the FileMaker... Read more
Sale! 13-inch 2.7GHz Retina MacBook Pro for $...
 Best Buy has the new 2015 13″ 2.7GHz/128GB Retina MacBook Pro on sale for $1099 – $200 off MSRP. Choose free shipping or free local store pickup (if available). Price for online orders only, in-... Read more
Minimalist MacBook Confirms Death of Steve Jo...
ReadWrite’s Adriana Lee has posted a eulogy for the “Digital Hub” concept Steve Jobs first proposed back in 2001, declaring the new 12-inch MacBook with its single, over-subscribed USB-C port to be... Read more
13-inch 2.7GHz Retina MacBook Pro for $1234 w...
Adorama has the 13″ 2.7GHz/128GB Retina MacBook Pro in stock for $1234.99 ($65 off MSRP) including free shipping plus a free LG external DVD/CD optical drive. Adorama charges sales tax in NY & NJ... Read more
13-inch 2.5GHz MacBook Pro available for $999...
 Adorama has the 13-inch 2.5GHz MacBook Pro on sale for $999 including free shipping plus NY & NJ sales tax only. Their price is $100 off MSRP. Read more
Save up to $600 with Apple refurbished Mac Pr...
The Apple Store is offering Apple Certified Refurbished Mac Pros for up to $600 off the cost of new models. An Apple one-year warranty is included with each Mac Pro, and shipping is free. The... Read more

Jobs Board

*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Support Technician IV - Jack Henry a...
Job Description Jack Henry & Associates is seeking an Apple Support Technician. This position while acting independently, ensures the proper day-to-day control of Read more
*Apple* Client Systems Solution Specialist -...
…drive revenue and profit in assigned sales segment and/or region specific to the Apple brand and product sets. This person will work directly with CDW Account Managers Read more
*Apple* Software Support - Casper (Can work...
…experience . Full knowledge of Mac OS X and prior . Mac OSX / Server . Apple Remote Desktop . Process Documentation . Ability to prioritize multiple tasks in a fast pace Read more
*Apple* Software Support - Xerox Corporation...
…Imaging experience Full knowledge of Mac OS X and prior Mac OSX / Server Apple Remote Desktop Process Documentation Ability to prioritize multiple tasks in a fast pace Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.