TweetFollow Us on Twitter

May 90 Letters
Volume Number:6
Issue Number:5
Column Tag:Letters

THINK Pascal 3.0 with MacApp

By Kirk Chase, Editor, MacTutor

THINK Pascal 3.0 Has MacApp Support

Kirk Chase

Anaheim, CA

THINK Pascal 3.0 is shipping now with MacApp support. THINK has really pushed their fine product onto mainstream OOP programmers by giving them a choice of either using the THINK Class Library (TCL) or MacApp. In addition to this, THINK Pascal 3.0 will edit larger files (up to 32,000 lines). They have generalized function calls, methods, and type casting. THe declaration of KeyMap is now done the way it was supposed to be done. One of the better features is the segementation at the procedure level; you can put your procedures into virtual segments, name them, and drag them into the physical segment of your choice. The linker has also been optomized to generate direct procedure calls for monomorphic methods (those methods that are never overridden).

In addition to all these, you get a host of other goodies to play with. On top of the list is the Class Browser. This feature gives you more than just an overview of class hierarchy; the Class Browser is an indespesible navigational aid to your code by creating links between it and the Browser; just double click to go to the definition of a class to edit it, hold the mouse button down to get a pop-up menu of methods to go to, and option, double click to find all the classes that define that method. The next goodie is SARez and SADeRez (“Say Rez” and “Say DeRez”), these long awaited standalone MPW tools will sink the clumsy RMaker. In addition to this, there is the Pascal Source Code Converter which takes your code and makes it MPW/THINK compatible; this is what you do with MacApp to use it in THINK.

Now you can have you MacApp and your speedy development too. From the benchmarks I was given, THINK beat MPW in first compilation speed by almost half and rebuild time is sooo short. Bowers Development’s AppMaker 1.1 supports the TCL. Bear River Institute and Invention Software are both holding training courses.

Unfortunately, there is a price tag to all this. THINK Pascal 3.0 costs $249 (up $100) or you can upgrade for $69. You will also need 2 megabytes to use THINK’s TCL and 4 megabytes to use MacApp. You need to aquire MacApp seperately from Apple (800-282-2732). You can contact Symantec for the upgrade at 800-441-7234 outside California or 800-626-8847 if inside California.

.FileName Syndrome

HOL0166, Roland van Straten

Dutch Macintosh Developer

When I was copying some folders from one harddisk to another I came across an old Finder™ quirk and as a result I started a little discussion on AppleLink.

Jim Reekes of Apple informed me about TechNote #102, which told me some more about my experienced problem. (I should read more!)

So what is the problem with the “.” and “:”?

As we all know (I forgot, shame on me) drivers are named using the “.drivername” convention. If we pass such a name in a PBOpen, FSOpen, or ? we can expect a driver refnum instead of a file refnum in return. If for instance we issue a PBWrite or ? we can have big trouble if the name should read “.Sony”. It could invoke a strange write and the contents of our inserted floppy is gone! So beware!

As for the colon: IM I-521 States “The User may specify a disk name (preceding the file name and seperated from it by a colon)... ; users should not be encouraged to do it. Well it is possible in almost every program.

My TROUBLE is gone

My solution to all this is presented below. Nothing to be proud of but, usable code.

{1}
 
{install the following procedure like this:
   SFPutFile(where,prompt,oldfname,@ClnPrdFilter,replyRec);
   Written by Roland van Straten, no copyright whatsoever }
FUNCTION ClnPrdFilter(item: Integer; theDialog: DialogPtr): Integer;
CONST
  kPoint = $2E;
  kColon = $3A;
VAR
  fNamStr: Str255;
BEGIN
  ClnPrdFilter := item;
  {there is always more than a character otherwise the putSave button 
would be
   grey and putSave value would not be the item number given to this 
filter}
  IF item = putSave THEN BEGIN
    GetDIText(theDialog,putName,fNamStr); {concatenate of GetDItem & 
GetIText}
    {check if first char a “.” and if there is a “:”}
    IF (fNamStr[1]= Char(kPoint)) OR (POS(Char(kColon),fNamStr)<> 0) 
THEN BEGIN
      SelIText(theDialog,putName,0,32767); {hilight the edit text item}
      SysBeep(0); {inform user about error}
      ClnPrdFilter := 100; {fake 0-event, another round of modal_dialog_ing}
    END;
  END;
END;

It is possible to filter the characters completely by using SFPPutFile(...). You are able to remove characters at the moment they are actually typed into the Edit Text Item. I found that this was not neccesary. It takes two filters and there is not much to gain.

Stolen from Apple Computer

David T. Craig

Wichita, Kansas

MacTutor magazine contained in its “The Completer MacTutor, Volume 2” two letters concerning the Macintosh ROM and a special ROM icon (see “Stolen from a Mac?” on page 556 and “Stolen from Apple Computer, Part II” on page 571). This icon, whose image appears below, appears to be used by Apple as a form of ROM protection from illegal ROM use.

MacTutor described the icon location and its display routine for the Macintosh Plus ROM. I searched my Macintosh II’s ROM for this icon and found the icon display routine at address $40860646 and the 128 bytes of the icon image starting at address $40860656.

I found the icon display routine using MacsBug by searching for the word $60FE which corresponds to the 68000 instruction “BRA *-2” which branches to itself resulting in an infinite loop and machine lockup. The actual MacsBug command I used to find the icon display routine was

F 40800000 40000 60FE

where $40800000 is the starting address of the ROM (obtained from the low-memory global pointer ROMBase at $02AE) and $40000 (256K) is the byte size of the ROM in my Macintosh II.

From MacsBug, you may see the icon display routine by typing IL 40860646. To see the icon data type DP 40860656.

The ROM code that displays the icon (A1 points to the screen):

40860646LEA *+$0010, A0
4086064AMOVEQ  #$18, D1
4086064CMOVE.L (A0)+, A1
4086064EADDA.W D0, A1
40860650DBF D1, *-$0004
40860654BRA.S  *+$0000

CompileIt!

Tom Pittman

San Jose, CA

While I’m sure that HyperBasic is a valuable contribution to the set of Macintosh development tools, it can hardly be said to have broken the C and Pascal monopoly on XCMD and XFCN creation: that happened over a year ago when CompileIt! mad HyperTalk a viable language for creating HyperCard externals.

I took the liberty to rewrite in HyperTalk the two HyperBasic benchmarks from February Kelly’s Corner. Note that the scripts are both shorter and more readable (no GOTOs); there is no concern with explicit type conversion nor call backs, as these are handled automatically by CompileIt! I tested both scripts in interpreted HyperCard, which is much easier than using MacsBug (though CompileIt! also generates procedure names for MacsBug and offers several other features to ease the pain of debugging). I then compiled the debugged scripts and immediately ran the resulting XCMDs, which were installed automatically in my designated target stack. MacTutor’s readers may be interested in the results:

--2

on SieveofEratosthenes
 put the ticks into time1
 repeat 10
 put 0 into count
 repeat with i=1 to 8191
 put 1 into char i of Flags
 end repeat
 repeat with i=1 to 8191
 if char i of Flags is not zero then
 put i*2+3 into Prime
 put i+Prime into k
 repeat while k<=8190
 put 0 into char k of Flags
 add Prime to k
 end repeat
 end if
 end repeat
 end repeat
 put the ticks into time2
 put count&&”primes in”&&(time2-time1)/60&&”seconds” into field 1
end SieveofEratosthenes

on accuracy
 put the ticks into time1
 put 0.0 into s
 put 0.0 into x
 put 0.00123 into del
 repeat 1000
 add x*x to s
 add del to x
 end repeat
 put the ticks into time2
 put “s=”&s&&”x=”&x&&”in”&&(time2-time1/60&&”seconds” into field 1
end accuracy

Although the sieve as written ran much slower than the published HyperBasic result, I was able to apply some of the code improvement techniques suggested in CompileIt! documentation to get the seive time down to 7.1 seconds on a Plus (compared to HyperBasic’s 7.48). The accuracy benchmark ran unmodified in 2.03 seconds, compared to HyperBasic’s published 2.12 seconds, and produced the correct result s=503.543802; I assume the incorrect result given in Kelly’s Corner is the publisher’d error, not HyperBasic’s. Both scripts were tested with CompileIt! version 1.5, which should have begun shipping in February.

CompileIt! is written entirely in HyperTalk, so it is not necessary to leave HyperCard to compile an XCMD. Although compile time in the current version is slower than HyperBasic, CompileIt! gives the programmer access to over 800 ROM routines (all the traps from all five Inside Macintosh volumes), all documented low-memory globals, and many defined data structures and constants. The list of built-in names is easily expanded to include new constants, data structures, traps, and callbacks, such as those for SuperCard and other programs that take HyperCard-style externals.

CompileIt! is available from Heizer Software (800) 888-7667 as well as several Mac retail outlets.

On the Arrival

Kirk Chase

Anaheim, CA

A number of new items have been recently introduced into the market. On top of the list is the Mac IIfx. This one is sweet. Running at 40Mhz, it is 100% faster than the IIci. Add to this Apple’s new color card with the QuickDraw coprocessor, and you will see 1 bit performance at 24 bits.

Premtech Corporation has announced there Macnifier. This image enlager for the Mac’s 9 inch screen reduces eyestrain by enlarging the image. It also has an anit-glare filter on it. You can contact Premtech at 404-662-1533.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

TunnelBear 4.0.2 - Subscription-based pr...
TunnelBear is a subscription-based virtual private network (VPN) service and companion app, enabling you to browse the internet privately and securely. Features Browse privately - Secure your data... Read more
Kodi 18.9 - Powerful media center tool f...
Kodi (was XBMC) is an award-winning free and open-source (GPL) software media player and entertainment hub that can be installed on Linux, OS X, Windows, iOS, and Android, featuring a 10-foot user... Read more
Iridient Developer 3.4.1 - Powerful imag...
Iridient Developer (was RAW Developer) is a powerful image-conversion application designed specifically for OS X. Iridient Developer gives advanced photographers total control over every aspect of... Read more
Vallum 3.3.4 - $15.00
Vallum is a little tool that helps you monitor and block apps connections and throttle apps bandwidth. It is able to intercept connections at the application layer, and hold them while you decide... Read more
DiskCatalogMaker 8.2.6 - Catalog your di...
DiskCatalogMaker is a simple disk management tool which catalogs disks. Simple, light-weight, and fast Finder-like intuitive look and feel Super-fast search algorithm Can compress catalog data for... Read more
SoftRAID 5.8.4 - High-quality RAID manag...
SoftRAID allows you to create and manage disk arrays to increase performance and reliability. SoftRAID allows the user to create and manage RAID 4 and 5 volumes, RAID 1+0, and RAID 1 (Mirror) and... Read more
Audio Hijack 3.7.3 - Record and enhance...
Audio Hijack (was Audio Hijack Pro) drastically changes the way you use audio on your computer, giving you the freedom to listen to audio when you want and how you want. Record and enhance any audio... Read more
CleanMyMac X 4.6.15 - Delete files that...
CleanMyMac makes space for the things you love. Sporting a range of ingenious new features, CleanMyMac lets you safely and intelligently scan and clean your entire system, delete large, unused files... Read more
Suitcase Fusion 21.2.1 - Font management...
Suitcase Fusion is the creative professional's font manager. Every professional font manager should deliver the basics: spectacular previews, powerful search tools, and efficient font organization.... Read more
Civilization VI 1.3.6 - Next iteration o...
Civilization® VI is the award-winning experience. Expand your empire across the map, advance your culture, and compete against history’s greatest leaders to build a civilization that will stand the... Read more

Latest Forum Discussions

See All

Mulled 2 is a refreshingly simple ball-p...
Some of the greatest mobile games are actually the simplest ones, and it’s this philosophy that Mulled 2 was built on. Out now for iOS and Android, the puzzle sequel takes the accessible mechanics of its predecessor and builds on them with enticing... | Read more »
Physics-based tower defense game Goblin...
Indie developer Arif Games has released Goblin Raiders on iOS and Android. [Read more] | Read more »
PUBG Mobile has provided yet another upd...
PUBG Mobile has been making a point of publicly mentioning all of their ongoing efforts to vanquish cheating from the popular battle royale. Today two teams within the company have provided updates on their progress. [Read more] | Read more »
Zombieland: AFK Survival is celebrating...
Zombieland: AFK Survival is currently celebrating its one-year anniversary. If you don't quite recognise the name that's because it initially launched as Zombieland: Double Tapper. Anyway, the game is celebrating turning one with two Halloween-... | Read more »
Distract Yourself With These Great Mobil...
There’s a lot going on right now, and I don’t really feel like trying to write some kind of pithy intro for it. All I’ll say is lots of people have been coming together and helping each other in small ways, and I’m choosing to focus on that as I... | Read more »
Genshin Impact Guide - Gacha Strategy: W...
If you're playing Genshin Impact without spending money, you'll always need to be looking for ways to optimize your play to maximize rewards without getting stuck in a position where you're tempted to spend. The most obvious trap here is the game'... | Read more »
Genshin Impact Adventurer's Guide
Hello and well met, fellow adventurers of Teyvat! Check out our all-in-one resource for all things Genshin Impact. We'll be sure to add more as we keep playing the game, so be sure to come back here to check for updates! [Read more] | Read more »
Genshin Impact Currency Guide - What...
Genshin Impact is great fun, but make no mistake: this is a gacha game. It is designed specifically to suck away time and money from you, and one of the ways the game does this is by offering a drip-feed of currencies you will feel compelled to... | Read more »
XCOM 2 Collection on iOS now available f...
The XCOM 2 Collection, which was recently announced to be coming to iOS in November, is now available to pre-order on the App Store. [Read more] | Read more »
Presidents Run has returned for the 2020...
IKIN's popular endless runner Presidents Run has returned to iOS and Android just in time for the 2020 election season. It will see players choosing their favourite candidate and guiding them on a literal run for presidency to gather as many votes... | Read more »

Price Scanner via MacPrices.net

Amazon issues $50-$71 instant discount on all...
Amazon has new 2020 Apple 11″ iPad Pros on sale for $50-$70 off Apple’s MSRP. These are the same iPad Pros sold by Apple in its retail and online stores. Be sure to select Amazon as the seller,... Read more
B&H Photo offers early Black Friday prici...
B&H Photo has Apple AirPods on sale for as little as $129 and up to $50 off MSRP for a limited time. Expedited shipping is free to many addresses in the US: – AirPods with Charging Case: $129.99... Read more
Get a 13″ 2.0GHz MacBook Pro for $300 off MSR...
Apple has a full line of Certified Refurbished 2020 13″ 2.0GHz 4-Core Touch Bar MacBook Pros, with 10th generation Intel processors, available starting at $1529 and up to $300 off MSRP. Apple’s one-... Read more
Apple’s 16″ MacBook Pros are back in stock st...
Apple has Certified Refurbished 2019 16″ MacBook Pros back in stock for up to $420 off the cost of new models, starting at $2039. Each model features a new outer case, shipping is free, and an Apple... Read more
Use our exclusive iPhone Price Trackers to fi...
Looking for a new Apple iPhone 12 or 12 Pro? Perhaps a deal on last year’s iPhone 11? Check out our iPhone Price Tracker here at MacPrices.net. We track new and clearance iPhone prices from Apple as... Read more
Weekend deal: $100 off 13″ MacBook Airs at Am...
Amazon has new 2020 13″ MacBook Airs on sale for $100 off Apple’s MSRP, starting at only $899. Their prices are the lowest available for new MacBooks from any Apple resellers. These are the same 13″... Read more
New 10.9″ 64GB Apple iPad Air on sale for $55...
Amazon has Apple’s new 2020 10.9″ 64GB WiFi iPad Air on sale today for $549.99 shipped. That’s $40 off MSRP. Pre-orders are available today at this discounted price, and Amazon states that the iPad... Read more
Get a clearance 2019 27″ 5K iMac for up to $5...
Apple has Certified Refurbished 2019 27″ 5K iMacs available starting at $1439 and up to $520 off their original MSRP. Apple’s one-year warranty is standard and shipping is free. The following... Read more
AT&T offers the Apple iPhone 11 for $10/m...
AT&T is offering Apple’s 64GB iPhone 11 for $10 per month, for customers opening a new line of service, no trade-in required. Discount is applied via monthly bill credits over a 30 month period.... Read more
Apple’s 2020 11″ iPad Pros on sale today for...
Apple reseller Expercom has new 2020 11″ Apple iPad Pros on sale for $50-$75 off MSRP, with prices starting at $749. These are the same iPad Pros sold by Apple in their retail and online stores: – 11... Read more

Jobs Board

Geek Squad *Apple* Consultation Professiona...
**789134BR** **Job Title:** Geek Squad Apple Consultation Professional **Job Category:** Store Associates **Store Number or Department:** 000554-Boca Raton-Store Read more
*Apple* Mobility Specialist - Best Buy (Unit...
**787854BR** **Job Title:** Apple Mobility Specialist **Job Category:** Store Associates **Store Number or Department:** 001764-Downingtown-Store **Job Read more
*Apple* Mac, Windows & Mobile Device Sup...
Apple Mac, Windows & Mobile Device Support Engineer at created 30-Sep-2020"/> Skip to content **Xerox** at https://xerox.avature.net/en_US/careers Menu ** Apple Read more
Freelance Features Writer ( *Apple* Products...
…interested in iOS, watchOS, iPadOS, macOS? Do you like to explain and teach Apple products to other people with less understanding? If these things sound like you, Read more
Geek Squad *Apple* Consultation Professiona...
**788452BR** **Job Title:** Geek Squad Apple Consultation Professional **Job Category:** Store Associates **Store Number or Department:** 000401-Southland Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.