TweetFollow Us on Twitter

Spring 91 - Letters


I encountered a technical error in the Macintosh Q & A section in the latest issue of develop . The question was: "Is the maximum size for global and local data still 32K?" The answer stated that the 32K limit for local (stack) data "is basically due to the Motorola processor architecture." As stated in the answer, the LINK instruction is limited to a 16-bit offset. Unstated in the answer is that the compiler can easily work around this limitation. Suppose your program declares 50K bytes of local data. The compiler should generate a LINK instruction for the first 32K bytes and then adjust the stack for the remaining 18K bytes needed by the routine. If the program is compiled specifically for the 68020 or 68030, the compiler can issue a LINKL (link long) instruction, which allows a full 32- bit offset.
--Chuck Lins

Thanks for the clarification. You're absolutely right, but of course for most of us it doesn't make any difference; we don't write our compilers, we're slaves to them. I guess the answer should have read "is basically due to the way that current compilers handle local data." All you aspiring compiler writers, take note.
--Dave Johnson

After receiving Gorillas in the Disc (Developer CD Series Volume VI) a few months ago, I checked out the electronic versions of the develop issues that we did not have in hardcopy, and came across something that prompted me to write. I was reading the letters in develop Issue 2 (April 1990) and saw a letter and response in which you mentioned the "ever-popular audio track" from the develop CD. Because we are an Apple Partner, our copy of develop contains a card telling us that Developer Essentials will be included in a folder on our Developer CD Series disc. Imagine my disappointment when I realized that the disc Apple Partners received contained no audio track. What a crime to deprive all us Partners of such a bonus! Please tell your people that Partners want their audio!
--Bill Stoker

The Developer CD Series disc contains a superset of what's on the disc that's bound into develop (now called the Developer Essentials disc). Volume III of the Developer CD Series ("A Disc Called Wanda") corresponds to develop Issue 2 and does indeed contain the ever-popular audio track, as part of the CD Audio Toolkit demo. Were you looking for an audio track on the latest Developer CD Series disc? If so, you would in fact not find one there; there wasn't one on the corresponding Developer Essentials disc, either. Rest assured that we won't deprive Apple Partners of any of the goodies we provide on the Developer Essentials disc!
--Caroline Rose

First let me say that develop is great!

I read on page 5 of the latest issue that your group is now responsible for the Developer CD Series . Gorillas in the Disc is a bit of a disappointment. Not a lot of really new stuff on it. That's not your fault, I know. There must be neat stuff floating around in Apple somewhere!

Someone decided that the Q & A Stack should contain both Macintosh and Apple II GS stuff. Boo, hiss! I tend to read through that stack looking for stuff I don't know, before I know I need to know it! I was really confused by things that I had never heard of on the Macintosh before, only to find they were on the Apple IIGS! Arrggh! Can you please separate the II GS stuff and the Macintosh stuff into two stacks? And can you please go back to the format of putting dots beside the new stuff?

The X Ref stuff is kinda neat. Can't wait for 7.0 aliasing!
--Scott Anguish

Thanks a lot for your letter and your words of encouragement. My group contributes to the Developer CD Series, but we're not actually responsible for it. Besides adding more new "neat" stuff, is there anything we could do to improve the disc? We're always looking for suggestions!Sorry to hear that adding Apple IIGS stuff to the Q & A stack confused you so much (but I'm awfully glad to hear that you're browsing the Q & A stack!). We put the II GS info in the stack hoping that Macintosh developers would see how similar the two toolboxes are and perhaps get some extra mileage from their work by porting their Macintosh application to the IIGS. It sounds like it's more confusing than helpful, so we'll reevaluate our decision. What do the rest of you think about combining II GS and Macintosh information in one stack?

In reply to your request for dots: The latest Q & A Stack has been reworked so much it's practically all new, but in the future you can expect to once again see dots beside new material. Also note that, starting with the latest stack, each card will show the date of the last modification.
--Louella Pizzuti
Just a quick note to congratulate you and your staff on another fine issue of develop (and in the hopes that I won't see a survey). I read it cover to cover, and thoroughly enjoyed it, especially the Macintosh Q & A. I kept turning the page expecting to have seen the last question answered, but lo and behold, there were more questions. It was better than Jeopardy. You really outdid yourselves!

Keep up the wonderful work, and please consider starting a new column: a soap opera about the dogcow.

By the way, whose nose is lighting up the cover?
--Robert H. Zakon

Thanks for the letter. If we ever do a survey (and my boss has been pushing me to do one ever since Issue 2 came out), I'll make sure that the surveyors know you're officially exempt.

The nose on the cover belongs to Cleo Huggins, who has done all our covers and nose what she's doing.
--Louella Pizzuti

COMMENTS We welcome timely letters to the editors, especially from readers reacting to articles that we publish in develop . Letters should be addressed to Caroline Rose (or, if technical, to Dave Johnson) at Apple Computer, Inc., 20525 Mariani Avenue, M/S 75- 2B, Cupertino, CA 95014 (AppleLink: CRose or Johnson.DK).

All letters should include name and company name as well as address and phone number. Letters may be excerpted or edited for clarity (or to make them look like they say what we wish they did). *


Community Search:
MacTech Search:

Software Updates via MacUpdate

Gopogo guide - How to bounce like the be...
Nitrome just launched a new game and, as to be expected, it's a lot of addictive fun. It's called Gopogo, and it challenges you to hoparound a bunch of platforms, avoiding enemies and picking up shiny stuff. It's not easy though - just like the... | Read more »
Sago Mini Superhero (Education)
Sago Mini Superhero 1.0 Device: iOS Universal Category: Education Price: $2.99, Version: 1.0 (iTunes) Description: KAPOW! Jack the rabbit bursts into the sky as the Sago Mini Superhero! Fly with Jack as he lifts impossible weights,... | Read more »
Star Wars: Galaxy of Heroes guide - How...
Star Wars: Galaxy of Heroes is all about collecting heroes, powering them up, and using them together to defeat your foes. It's pretty straightforward stuff for the most part, but increasing your characters' stats can be a bit confusing because it... | Read more »
The best cooking apps (just in time for...
It’s that time of year again, where you’ll be gathering around the dinner table with your family and a huge feast in front of you. [Read more] | Read more »
Square Rave guide - How to grab those te...
Square Rave is an awesome little music-oriented puzzle game that smacks of games like Lumines, but with its own unique sense of gameplay. To help wrap your head around the game, keep the following tips and tricks in mind. [Read more] | Read more »
Snowboard Party 2 (Games)
Snowboard Party 2 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: Crowned the best snowboarding game available on the market, Snowboard Party is back to fulfill all your adrenaline needs in... | Read more »
One Button Travel (Games)
One Button Travel 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: “To cut a long story short, If you like interactive fiction, just go buy this one.” - “Oozes the polish that... | Read more »
Light Apprentice Volume 1 (Games)
Light Apprentice Volume 1 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: Light Apprentice Volume 1 includes Chapters 1 to 4, all gathered in a new exclusive game. When life in the world of... | Read more »
The best games like Animal Crossing on m...
Animal Crossing amiibo Festival is out right now for the Wii U, reminding us of just how much fun that world can be. Or at least to go back and check in on our villages once in a while. [Read more] | Read more »
Between 2 Taps - Tap for Tap interview M...
Hello, and welcome back to Between 2 Taps, Tap for Tap’s Indie Dev interview series. [Read more] | Read more »

Price Scanner via

iMobie Releases its Ace iOS Cleaner PhoneClea...
iMobie Inc. has announced the new update of PhoneClean 4, its iOS cleaner designed to reclaim wasted space on iPhone/iPad for use and keep the device fast. Alongside, iMobie hosts a 3-day giveaway of... Read more
Black Friday deals on the Apple Watch and App...
Apple resellers are offering discounts and bundles with the purchase of an Apple Watch this Black Friday weekend. Below is a roundup of the deals being offered by authorized Watch resellers: Apple... Read more
Early Black Friday sale at B&H Photo, up...
B&H Photo has all new Macs on sale for up to $500 off MSRP as part of their early Black Friday sale including free shipping plus NY sales tax only: - 15″ 2.2GHz Retina MacBook Pro: $1699 $300 off... Read more
NewerTech/OWC/MacSales Black Friday Deals 201... • Free Shipping available on nearly EVERYTHING on orders $35.00 & up within USA + • International Delivery Specials from $2.99+ Special Purolator... Read more
Walmart Black Friday deals: $100 off select i...
Walmart has released their Black Friday deals for 2015, now available online. Choose free shipping or free local store pickup (if available): - 16GB iPad Air 2: $399, $100 off MSRP - 16GB iPad Air: $... Read more
Photo Cleaner 1.0 Reclaims iPhone Storage Spa...
Seoul, Korea based mix1009 has announced the release and immediate availability of Photo Cleaner 1.0, their handy iPhone app that deletes the video portion of Live Photos, in order to reclaim space... Read more
Black Friday and Holiday sales on our price t...
Scan our Mac Price Trackers for the latest Black Friday and Holiday season information on sales, bundles, and availability on systems from Apple’s authorized internet/catalog resellers. We update the... Read more
Best Buy Black Friday deals: Up to $200 off M...
Best Buy has posted their Black Friday sale prices for 2015. Save on MacBook Pros, MacBooks, MacBook Airs, iMacs, iPads, and Apple Watches. Choose free shipping or free local store pickup (if... Read more
Save $30-$40 on new Apple TVs after rebate
Adorama has new Apple TVs on sale for up to $40 off MSRP after mail-in rebate, good through December 15th. Shipping is free, and Adorama charges NY & NJ sales tax only: - 32GB Apple TV: $119.99... Read more
13-Inch Haswell MacBook Air At Two Years – Th...
The 13-inch mid-2013 “Haswell” MacBook Air I ordered in Apple’s November 2013 Black Friday sale was my first new Mac in four and a half years — the longest interval I’ve gone between system upgrades... Read more

Jobs Board

Storefront Operations Coordinator, *Apple* -...
# Storefront Operations Coordinator, Apple -Latin America Job Number: 43587750 Miami, Florida, United States Posted: Oct. 16, 2015 Weekly Hours: 40.00 **Job Summary** The Read more
*Apple* Enterprise / Government Professional...
# Apple Enterprise / Gove ment Professional Services Engineer Job Number: 42292976 Reston, Virginia, United States Posted: Aug. 18, 2015 Weekly Hours: 40.00 **Job Read more
iOS Wallet & *Apple* Pay Engineer - App...
# iOS Wallet & Apple Pay Engineer Job Number: 40586801 Santa Clara Valley, Califo ia, United States Posted: Nov. 16, 2015 Weekly Hours: 40.00 **Job Summary** The iOS Read more
Software Engineer, *Apple* Watch - Clock Fa...
# Software Engineer, Apple Watch - Clock Face Team Job Number: 44368761 Santa Clara Valley, Califo ia, United States Posted: Nov. 14, 2015 Weekly Hours: 40.00 **Job Read more
Administrative Assistant, *Apple* Online St...
# Administrative Assistant, Apple Online Store Job Number: 43992352 Santa Clara Valley, Califo ia, United States Posted: Nov. 9, 2015 Weekly Hours: 40.00 **Job Summary** Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.