TweetFollow Us on Twitter

Apr 85 Letters
Volume Number:1
Issue Number:5
Column Tag:Letters

Letters

Editor’s comments are sprinkled liberally within brackets [...] so please do not mistake them for the writer’s comments. Thank you to those who take the time to write and share the technology. We need all the help we can get!

Heinich’s Benchmark on Consulair

Thank you for MacTutor! I have been programming on the Macintosh since last July and participated in the early (?) testing of the Apple 68000 MDS package. Shortly after that experience, I purchased Mac C from Consulair. Mac C, with it’s toolkit is worth every cent! However, you’ll need two drives and the Inside Macintosh document to do any serious programming. Robert Heinich [Vol. 1, No. 3 Benchmark for C] should immediately send a check to Consulair. The benchmark (attached) works primarily because of the addressing capability of the 68000 and the word sizes chosen for long, 32 bit, and short, 16 bit variables. I am just slightly curious about brands X and Y.

I have a problem (bombs 2 and 10) accessing the International Utilities Package using assembly code (e.g. IUDateString, IUTimeString, IUGetIntl). Could you publish the calling sequences in a future issue? [Would love to, if I knew them!] I could also use the format for the Apple 68K MDS assembler relocatable object files. [Try MacNosy on it] What do you pay for original articles for MacTutor? [A lot! I don’t understand your listing below.]

- John J. Novak

Mount Laurel, NJ

Consulair C Benchmark

; Consulair MAC C Compiler 1.0
; By John Novak (see above)
STRING_FORMAT 0
INCLUDE M68KLIB.D
main:
; {
; union u_storage{
;    long a_long;
;    struct T_0000{
;        short a_short;
;        short b_short;
;    }S_000;
; }storage;
CLR.L -(SP)
LINK A6, #-8
; storage.a_long = 6;
MOVE.L #6, -8(A6)
XREF printf

;printf(“\na_short = %d”, storage.S_0000.a_short);

; D1 _storage
MOVE -8(A6), D1
EXT.L D1
LEA ‘a_short = %d’, A0
MOVE.L A0, D0
JSR printf

;printf(“\nb_short = %d”, storage.S_0000.b_short);

;D1 _storage+2
MOVE -6(A6), D1
EXT.L D1
LEA ‘b_short=%d’, A0
MOVE.L A0, D0
JSR printf

;printf(“\n”);
LEA ‘ ‘, A0
MOVE.L A0, D0
JSR printf
;}
RETX
XREF main
; 0 errors

C Reviews Needed

Thanks for the prompt delivery of my first subscription issue. I really like your “no fluff” approach; it’s about time! Some suggestiosn:

-encourage editors to comment on development softare quality. (I’m having trouble picking a C compiler.)

-do personal profiles on the editors.

-in depth, “Mac Language” word definitions would be helpful. (How about a MacTech sweatshirt?)

- L.E. Thomas

Teaksburg, MA

[Our editors are shy, unassuming Software Developer’s! A MacTutor T-shirt with Professor Mac on it is in the works.]

External Drive in Basic 1.0

Do you have any idea how to use the external drive in MS-Basic V. 1.0?

-Peter Wollschlaeger

West Germany

[You can’t that I know of! Use version 2.0 instead. I yield to Dave Kelly]

Typos in Robert Heinich’s Listing

I’ve enclosed two copies of the source code I used to run the Byte benchmark using Manx Axtec C compiler. By using global variables, the program runs in 6.3 seconds. Changing to register variables cuts the time down to an impressive 3.6 seconds! I also ran the benchmark in the letters section of Vol. 1 No. 3 issue of MacTech with the ‘union’ struct. The Aztec compiler duplicates the results of “COMPILER Z”. I found five typos in the source code as listed:

line 8: short B_short should be short b_short with a lower case b.
line 10: )storage should be }storage with a brace.
other: all occurrances of /n should be \n instead (three occurrances).

I really enjoy your journal and look forward to recieving each issue. I don’t yet have “Inside Macintosh”, so the Journal is a big help to me.

-Thomas Fosson

Waverly OH.

New Pascal Book Due Out

I am a fan of your MacTech journal. My particular interest now is Assembly Language, though for the past year I have been involved with MacPascal. My book on MacPascal, titled “Macintosh Pascal Illustrated: The Fear and Loathing Guide” is being published by Addison Wesley and will be available in May. If you would like to publish an advance excerpt from the book, please contact me.

-Scot Kronick

Berkeley, CA

[YES, would love to!]

Ideal Development Described

Okay! I want what you offer enough to try it sight unseen. If you can really cover opening up the Mac to us who want to write our own stuff, I think you will have so much success you won’t know what to do with it. [Hope so, as I’m close to losing my Job with all the time spent on MacTutor!]

As you know, MS-Basic is “sort of useful” on a 128K Mac, but the workspace is small and it is slow. My Apple II+ with Applesoft compiler and math board is SIX TIMES FASTER! If you know of a true compiler for MS-Basic, please let me know. [You and everyone else in the world!]

I will be happy to program in another language such as Pascal, Modula II, C, if it has:

- Full screen editor

- Interpreted run mode for test/debug

- true compilation to 68000 object code

- XREF for variable usage & calls

- Document program for variable definitions and comments.

- Ability to dynamically display variables & execution flow during development.

-Michael Zuteck

Kemah, TX.

[Anyone want to nominate their pick to fill Mr. Zuteck’s requirements?]

Whole Journal on Mac Pascal Wanted

Please enter my subscription to MacTutor. Other magazines seem based on the premise that most users want only ready-made applications, instruction in using paint programs, and product announcements. It seems likely that a large percentage of Macintosh purchasers, especially early ones, really wanted the 68000 processor and the toolbox traps to graphics routines. Your magazine is exactly what they need to help them realize the potential of fast and interesting graphics without necessarily succumbing to the agonies of machine language programming. [Bite your tongue, hee hee!]

PAINT LOADER PROCEDURE NEEDED

We have been developing procedures for both text analysis and for computer assisted instruction. For the most part, development with MacPascal has been rewarding, but we still lack some capabilities. The most glaring omission from MacPascal is a procedure to load MacPaint files from the diskette into internal memory. It is needed to provide detailed and interesting figures within an interactive program. Also helpful would be discussion of drawing off screen and the use of off screen drawings in more than one port.

Dispose Region Crash

As you reported, quickdraw routines gobble memory, so discussion of memory management in graphics-intensive programs would be welcome. For example, I would like to know why disposing regions sometimes causes programs to crash [dangling pointers??]. Referring to the excellent article “Quickdraw Does Regions” by the Chief Wizard in Vol. 1 No. 3, does reusing the same region (by name) several times use more memory each time? Would it be possible to save memory by disposing of the region after each use?

IN LINE TRAPS

Beyond these interests, I would like to see lots of examples and discussion of the Inline Procedures and the Toolbox routines. [See this month’s Advanced Mac’ing column by Steve Brecher] In fact, I would really like to see a whole journal devoted to Pascal programming for the Mac. I have far more questions than can be answered in a single short monthly column, even over a period of several months. [Out of 300,000 Macs, what percentage of those program, and of those programmers what percentage only use Pascal? You see the problem magazines face.]

You are starting in the right place by presenting the more basic functions, and you do it very well, but I look forward to future columns on more advanced topics.

-Gary Palmer, Ph. D.

University of Nevada

Las Vegas, NV

FOAMING AT THE MOUTH

I recieved my first MacTech Journal the other day and I must say that it is an excellent assortment of technical information. (Excuse me while I wipe the foam from my mouth). I don’t want to sound like I’m deprived, but the usual mass market magazines do nothing more than pump you up until you wet your pants. This may make you feel excited about owning a Mac, but does little to inform you that wetting your pants byond the 5th grade is in inexcusable cultural phenomenon-Mac or no Mac.

-Romanas J. Buskus

Bridgeview, Il.

[We all rolled over your letter! Great!]

Disk Directory Format?

I am now planning a diskette lister program and need to know the format of the directory area of a diskette. I have found the definition of some of the fields but have so far not been able to locate a published reference on the complete picture. Could you point me to one? [See Jorg’s Forth column on the VTOC format.]

-William Deever

Dallas, TX.

OS Documentation Errors

There are errors in the OS Utilities appendix for register-based traps which return a value in A0. Bit 8 ($0100) must be set in the trap value for such traps. Bit 8 set tells the trap handler NOT to save/restore A0. The trap address for _GetTrapAddress is $A146. Earlier documentation had it incorrect.

-Steve Brecher

Hyper-Drive Shock

General Computer has mounted one of those little shock detectors that turn pink when abused on the underside of the HDA. Once the hard disk drive is installed, you can’t see it. So if you drop your box, they’re gonna know it and it may be a bit harder to claim warrenty.

-MacGeorge

Switching Finders under Program Control

I have seen a few messages about alternatives to the Finder. Any application can “serve” as a finder (assuming it does the right things!!). To change the application that runs when other applications exit, you need only zap the global location FinderName.

In theory, change the contents of FiinderName to contain a string which is the name of your “finder”. This could be done by a small “change finder” application which uses standard file to allow you to select the application that is to be the new finder. How about a dialog box to select between the Tardis FastFinder and the Apple Finder without the mess and permanency of changing filenames?

The file type does not have to be a “DRVR” (resource name for a driver or desk acc.); anything named FINDER (case insenitive) will do if the FinderName global contains a pascal-flavor string (counted) which is the name. The “thing” must be a runnable application, of course! The finder’s creator/type has nothing to do with it. If the “system” attribute bit is set, the Apple Finder won’t let you change the name of the application, and the Apple finder forces the “:system” attribute bit on for any files it finds named “IMAGEWRITER”, “FINDER”, “SYSTEM” and probably a few others.

Ok, I’ve tried it. You can change finders at will by just filling in a “Pascal” (counted) string at absolute location $2E0 containing the filename (no device name) of the application that you want to act as the finder.

I’ve written an application that puts up a dialog box and lets you select either FastFinder or Mac Finder. [Hey, Bob, how about an article on this? This is great stuff!]

-Bob Denny

Lisp Sounds Good

ExperLisp is going to be great for the Mac even though the price is $500. A feature of the lisp code is that it is upward compatible on the Symbolics 3600 series lisp computers.

-The Terminator

New Finder 2.6X Features

2.6 is the newest finder. It has some interesting new features...When the alarm clock is on the desktop (not active), you cannot use cmd E to eject disks. It goes beep. You have to use the menu command.

RAM disk and other things that formerly showed up as being on AppleBus are now shown as on AppleTalk. Get info now shows bytes used and the number of files in use.

Under the special menu there is now a shutdown command that ejects all disk and re-boots. This is REAL handy.

Empty folder is gone, instead there is a new folder command. The put back command disappeared too. Big loss (hee hee). What did put back do? I never used it. Guess no one else did either.

There are a lot of changes to the standard file dialog. It “permits further character scrolling without additional input, automatically selects the first file, handles ejecting hard disks correctly”. (How do you eject a fixed hard disk??)... “and many other minor tweaks were made”, to quote Mr. Capps. An update utility SFUdate will update other disks to this new standard file dialog format.

Oh, finally, the best thing about 2.6 is that it optimizes itself for a FatMac, loading in resources normally not “pre-loaded” and only purging what it actually has to. Tremendous increase in desk accessory speed.

-Rusty Hodge

Sys Op

Switcher works with 2.6X

I’ve had no problems with Switcher 0.90 under Finder 2.6X. I’ve been warned that 0.90 is the only reliable switcher. The later versions have more features, but bomb more frequently, and when switcher bombs, it usally takes the whole disk with it.

-Robert Wiggins

The switcher (1.1) problem only occurs when you try to run it from a RamDisk that has the system and finder on it. Switcher doesn’t seem to check and see if the memory is assinged to something else before taking of.

-Rusty Hodge

Rumor Mill at the Expo

I just got back from S.F. after an 8-hr. drive. It took me almost as long to get on the mousehole! Impressions:

- No color for the Mac in 1985, probably not in 1986.

- No 800K floppy drive for at least 6 months.

- No dedicated hard disk for the Mac from Apple for at least 3 months, probably 6 months.

- “Mac XL” stands for “Mac Extra Large” or “eX-Lisa”. The new finder should be out officially real soon!

- I enjoyed David Smith’s 35-minute commercial for MacTutor, oops, I mean talk on becoming a machine language wizard. Had lots of fun at Round Table Pizza playing Maze Warz on two Mac networks with all the mouseholers at the MouseFest.

-Midnight Macker

PAINT 1.4

Print catalog now works the way it’s supposed to. MacPaint 1.4 will now print a catalog of the last disk accessed.

-Don L.

Paint File in Ram

Yes, the new Paint 1.4 will keep the whole picture in ram on a FatMac, eliminating disk access during show page and hand movements.

-The Jerk

FBI PLAYING WAR GAMES

FBI ALERT: I heard a rumor today that the FBI is watching this board and is keeping an eye on a few people, so watch what you say.

-The Jerk

InLine Trap Example

For anyone using Mac Pascal, here is a quick way to change the title of the drawing window:

Program Sample;
uses 
    QuickDraw2;
const 
    SetWTitle = $A91A;
begin
    InLineP(SetWTitle,thePort, ‘title’);
end.

This uses the undocumented “InLine” facility which gives access to any toolbox routines by it’s trap number.

-Don L.

LISA BECOMES MAC XL

Got some lables from Apple to stick over the Lisa name on the boxes, so it reads Macintosh XL. What’s that tell ya?

-MacGeorge

Absoft Fortran

Just got Absoft’s FORTRAN in the store last week...it’s Great! Makes application programs that can be run from the finder, compiles totally into 68000 code (at least that’s what it says...). It even lets you save out assembled code in a text file to load in with your favorit assembler! I ran a floating point benchmark on it to see what the speed was and here are the results:

Mac. 15.92 secs

IBM 170.5 secs

Applesoft 390 secs

IBM (8087) 12.06 secs

Apple II (68000) 40.7 secs

DEC PDP 11/34 27.6 secs

-The Atom

Spinwriter 5500 to Mac

You can run a Spinwriter 5500/7700 series on the Mac serial port using the Daisy Wheel Connection Program from Assimilation Process (NOT THE NEC VERSION!). You need a different cable:

Mac: 2 > 2 :Spinwriter

3 > 3

7 > 7

20 > 19

Also connect 5, 6, 8 and 20 together on the spinwriter side. Use the NEC option in the selection box and set for 600 baud.

-Dave Smith

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

VueScan 9.5.75 - Scanner software with a...
VueScan is a scanning program that works with most high-quality flatbed and film scanners to produce scans that have excellent color fidelity and color balance. VueScan is easy to use, and has... Read more
Opera 44.0.2510.1449 - High-performance...
Opera is a fast and secure browser trusted by millions of users. With the intuitive interface, Speed Dial and visual bookmarks for organizing favorite sites, news feature with fresh, relevant content... Read more
Opera 44.0.2510.1449 - High-performance...
Opera is a fast and secure browser trusted by millions of users. With the intuitive interface, Speed Dial and visual bookmarks for organizing favorite sites, news feature with fresh, relevant content... Read more
Skim 1.4.29 - PDF reader and note-taker...
Skim is a PDF reader and note-taker for OS X. It is designed to help you read and annotate scientific papers in PDF, but is also great for viewing any PDF file. Skim includes many features and has a... Read more
FontExplorer X Pro 6.0.2 - Font manageme...
FontExplorer X Pro is optimized for professional use; it's the solution that gives you the power you need to manage all your fonts. Now you can more easily manage, activate and organize your... Read more
1Password 6.7.1 - Powerful password mana...
1Password is a password manager that uniquely brings you both security and convenience. It is the only program that provides anti-phishing protection and goes beyond password management by adding Web... Read more
Vivaldi 1.9.818.44 - An advanced browser...
Vivaldi is a browser for our friends. 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... Read more
Vivaldi 1.9.818.44 - An advanced browser...
Vivaldi is a browser for our friends. 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... Read more
Skim 1.4.29 - PDF reader and note-taker...
Skim is a PDF reader and note-taker for OS X. It is designed to help you read and annotate scientific papers in PDF, but is also great for viewing any PDF file. Skim includes many features and has a... Read more
1Password 6.7.1 - Powerful password mana...
1Password is a password manager that uniquely brings you both security and convenience. It is the only program that provides anti-phishing protection and goes beyond password management by adding Web... Read more

Latest Forum Discussions

See All

Fire Emblem Heroes event announces new m...
As reported yesterday, Nintendo was gearing up a live press event for their popular mobile game,Fire Emblem Heroes. While the stream revealed a lot of new things, the event was entirely in Japanese. Luckily we have a rundown of what was announced... | Read more »
Best games we played this week
Another week, another slate of new mobile games. Although there weren't as many big name releases as last week, there were plenty of unique video game titles that came out that's sure to keep you interested over the weekend. Everything from classic... | Read more »
Olli by Tinrocket (Photography)
Olli by Tinrocket 1.0 Device: iOS iPhone Category: Photography Price: $2.99, Version: 1.0 (iTunes) Description: Get drawn in with Olli by TinrocketOlli instantly turns your everyday moments into hand-drawn art and animations. • Watch... | Read more »
Penarium (Games)
Penarium 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: | Read more »
Fire Emblem Heroes is way more profitabl...
Profits for Nintendo's mobile game Fire Emblem Heroes are apparently impressive enough to beat out other Nintendo titles likeSuper Mario Run, despite having 10 times fewer downloads. [Read more] | Read more »
Classic series Robot Unicorn Attack 3 no...
The classic Adult Swim browser game, Robot Unicorn Attack, branched off into a series of popular mobile games. Now, the latest entry into the series, Robot Unicorn Attack 3, is available for iOS and Android mobile devices. [Read more] | Read more »
Sudoku Sweeper (Games)
Sudoku Sweeper 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: A minimalist mashup of Minesweeper and Sudoku. Logic puzzle perfection. Every row, column and zone contains a bomb and one of... | Read more »
Under Leaves (Games)
Under Leaves 1.0.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0.0 (iTunes) Description: Journey into the forest, the jungle or the depths of the deep blue sea. Find chestnuts for the pigs, a caterpillar for the... | Read more »
Ninja Pizza Girl (Games)
Ninja Pizza Girl 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: In the not-so-distant future, rampart traffic congestion has resulted in only one way to deliver pizzas across town in thirty... | Read more »
SCRAP (Games)
SCRAP 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: That day, for no apparent reason, SCRAP decided to wake up and run. He had to, because his activation was a mistake the "Factory" could... | Read more »

Price Scanner via MacPrices.net

13-inch 2.7GHz Retina MacBook Pro, Apple refu...
Apple has Certified Refurbished 13″ 2.7GHz/128GB Retina MacBook Pros available for $200 off MSRP. An Apple one-year warranty is included with each model, and shipping is free: - 13″ 2.7GHz/128GB... Read more
13-inch Gray 2.9GHz/512GB Touch Bar MacBook P...
Amazon has the 13″ Space Gray 2.9GHz/512GB Touch Bar MacBook Pro (model MNQF2LL/A) in stock today and on sale for $150 off MSRP. Shipping is free: - 13″ 2.9GHz/512GB Touch Bar MacBook Pro Space Gray... Read more
15-inch 2.7GHz Space Gray Touch Bar MacBook P...
B&H Photo has the 15″ 2.7GHz Space Gray Touch Bar MacBook Pro in stock today and on sale for $2599…$200 off MSRP. Shipping is free, and B&H charges NY & NJ sales tax only: - 15″ 2.7GHz... Read more
13-inch 2.9GHz/256GB Space Gray Touch Bar Mac...
B&H Photo has the 13″ 2.9GHz/256GB Space Gray Touch Bar MacBook Pro in stock today and on sale for $150 off MSRP including free shipping plus NY & NJ sales tax only: - 13″ 2.9GHz/256GB Touch... Read more
21-inch iMacs on sale for up to $151 off MSRP
B&H Photo has 21″ iMacs on sale for up to $151 off MSRP, each including free shipping plus NY sales tax only: - 21″ 3.1GHz iMac 4K: $1348 $151 off MSRP - 21″ 2.8GHz iMac: $1199.99 $100 off MSRP... Read more
Weekend deal: Up to $420 off new MacBook Pros...
Apple has Certified Refurbished 2016 15″ and 13″ MacBook Pros available for $230 to $420 off original MSRP. An Apple one-year warranty is included with each model, and shipping is free: - 15″ 2.6GHz... Read more
Price drop: 15-inch 2.2GHz Retina MacBook Pro...
Amazon has dropped their price on 15″ 2.2GHz Retina MacBook Pros (MJLQ2LL/A) to $1709.99 including free shipping. Their price is $290 off MSRP for this model. Note that stock may sell out quickly at... Read more
2.8GHz Mac mini on sale for $899, save $100
B&H Photo has the 2.8GHz Mac mini (model number MGEQ2LL/A) on sale for $899 including free shipping plus NY & NJ sales tax only. Their price is $100 off MSRP. Read more
Check Apple prices on any device with the iTr...
MacPrices is proud to offer readers a free iOS app (iPhones, iPads, & iPod touch) and Android app (Google Play and Amazon App Store) called iTracx, which allows you to glance at today’s lowest... Read more
New System Clock for macOS by B-Eng Now Avail...
Fehraltorf, Switzerland based B-Eng has announced the release and immediate availability of System Clock, the company’s new system monitor and information app developed exclusively for macOS. System... Read more

Jobs Board

Product Manager, *Apple* Platforms - Viacom...
…Product Manager to drive the execution of its iOS and AppleTV experiences. The Apple Platform Product Manager will be a leader in our Agile/Scrum environment and Read more
*Apple* Mobile Master - Best Buy (United Sta...
**493714BR** **Job Title:** Apple Mobile Master **Location Number:** 001024-Weatherford-Store **Job Description:** **What does a Best Buy Apple Mobile Master Read more
*Apple* OS X Server Administrator (Active Se...
** Apple OS X Server Administrator \(Active Secret Clearance\)** **Description** Come be a part of a top notch team, apply today\!\! Tuva TUVA provides turnkey Read more
*Apple* Mac Computer Technician - GeekHampto...
…complex computer issues over the phone and in person? GeekHampton, Long Island's Apple Premium Service Provider, is looking for you! Come work with our crew Read more
Best Buy *Apple* Computing Master - Best Bu...
**501846BR** **Job Title:** Best Buy Apple Computing Master **Location Number:** 001126-South Bay Center-Store **Job Description:** **What does a Best Buy Apple Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.