TweetFollow Us on Twitter

Sep 85 Mousehole
Volume Number:1
Issue Number:10
Column Tag:Mousehole Letters

Mousehole Report, Letters

By Rusty Hodge, Sys Op & Contributing Editor, Mousehole BBS

Program bombs Lisp

MICRO GHOUL

I have been having a problem with a consistent bomb in ExperLisp that I was wondering whether anyone else was having. The following, though a terrible little routine is a perfect way to get to the bomb (which I was finally able to isolate trying to make a nice routine, that a later version of this piece of trash was working towards). Well, enough about that, here it is:

(SETQ MYWIND (NEWGRAFWINDOW '(100 100 300 350)))
(MYWIND 'SETWTITLE "GONNA BOMB!!")
(DEFUN COORDINATES ()
    (GETMOUSE))
(WHILE
    (NOT (BUTTON))
    (MYWIND 'SELECTWINDOW)
    (APPLY
         FILLOVAL '(50 50 (CAR (COORDINATES)) (CADR (COORDINATES)) MYWIND)))

Please excuse any typos or forgotten "(" or ")" or "'", if I forgot them here does not mean that I forgot them in the actual code, more important is the fact that though Lisp tries to give me an error it bombs with the ID #2 everytime. In fact the first time rather than just a bomb it added the desire to have a disk swap (though both disks where in their respective drives!)

Contest Winner

THE CATCHER

The Catcher (alias Steve Yaeger) wins the Mousehole printing contest sponsored by MacTutor, with this assembly entry to mimic the BASIC statement: PRINT "HELLO":END on the Macintosh. Steve wins a check for $50 and a MacTutor thank you. DON L also submitted an excellent answer that we will print next month.

; Print "hello" on the printer.
;       Written by Steve Yaeger
; If the printer is off-line, this will hang the Mac
;       until it is put back on line
; If there is no Printdriver file it just Beeps and exits
;
; The Linker file looks like this
;
;       HELLO.REL
;       ]
;
; These are the Equates Notice that the iPrReset, iPrLineFeed, 
; and  iPrPageEnd are Longwords and not words as in 
; PREQU.TXT from Counsulair.

 XREF START

; These are the PrDrvr constants.
 
iPrDrvrRef  EQU      $FFFD  ; Driver's RefNum = NOT ResID
iPrIOCtl       EQU      5              ; The Raw Byte IO Proc's ctl # 

PrDevCtl       EQU      7               ; The PrDevCtl Proc's ctl  # 

iPrReset       EQU      $00010000  ; The CParam for res
iPrPageEndEQU      $00020000  ; The CParam for end
iPrLineFeed EQU      $00030000   ; The CParam for pap 
lParam1 EQU      0                 ; the three printer parameters
lParam2 EQU      4
lParam3 EQU      8
 
; These are the standard call parameters
csCode  EQU      $1A      ;control dependent command 
csParam EQU      $1C             ;control dependent param.
ioCompletion  EQU     $C         ;pointer to async notifier routine
ioResult         EQU      $10      ;returns operation results
ioFileNameEQU      $12      ;pointer to name of driver
ioRefNum  EQU      $18      ;driver reference #
ioPermssn   EQU      $1B  ;read/write permission

; Traps used in this program
    .TRAP       _InitGraf                    $A86E
    .TRAP       _InitFonts                   $A8FE
    .TRAP       _FlushEvents       $A050
    .TRAP       _InitWindows       $A912
    .TRAP       _InitMenus                   $A930
    .TRAP       _InitDialogs                 $A97B
    .TRAP       _InitCursor                  $A850
    .TRAP       _TEInit                      $A9CC
    .TRAP       _Open                        $A000
    .TRAP       _Control                     $A004
    .TRAP       _SysBeep                     $A9C8
 
START
;Initialize Managers
PEA     -4(A5)            ;Space Created For Quickdraw's Use
_InitGraf                 ;Init Quickdraw
_InitFonts                ;Init the Font Manager
MOVE.L  #$0000FFFF,D0   ;This Mask Is For All Events
_FlushEvents              ;Flush All Of These Events
_InitWindows              ;Init the Window Manager
_InitMenus                ;Init the Menu Manager
CLR.L    -(SP)            ;restart procedure
_InitDialogs              ;Init the Dialog Manager
_InitCursor               ;Init to arrow cursor
_TEInit                   ;Init Text Edit
 
;------- OPEN THE PRINT DRIVER -------
LEA   '.Print',A1    ;Get a Pointer to the Drivers Name
LEA     IOPARMS,A0 ;Get the Parameter base addres
MOVE.L  A1,ioFileName(A0)     ;Store the Drivers Name addr
CLR.B    ioPermssn(A0)    ;fsCurPerm (whatever we got)
_OPEN
 LEA      IOPARMS,A0 ;Get the Parameter base address
 MOVE.W ioResult(A0),D0          ;Check for an error
 CMP.W  #0,D0                    ;is result ok?
 BEQ      @0                       ;Yes skip the error bell
 MOVE.W #30,-(SP)                ;beep length
 _SYSBEEP                          ;beep to indicate error
 BRA      @4

@0
;------ RESET THE PRINTER TO DEFAULTS -------
LEA     IOPARMS,A0               ;Get the Parameter base addr
MOVE.W  #iPrDevCtl,csCode(A0)   ;Set up a control type call
MOVE.L  #iPrReset,csParam+lParam1(A0)   ;only 1 (Reset)
CLR.L   csParam+lParam2(A0)
CLR.L   csParam+lParam3(A0)
_CONTROL
LEA     IOPARMS,A0 ;Get the Parameter base address
MOVE.W  ioResult(A0),D0   ;Check for an error
CMP.W   #0,D0                    ;is result ok?
 BEQ      @1                       ;Yes skip the error bell
 MOVE.W #30,-(SP)                ;beep length
 _SYSBEEP                          ;beep to indicate error
 BRA      @4
 
@1
;------ ACTUALLY PRINT THE WORD HELLO -------
LEATEXT_STRING,A1;Get address of string to pr
LEA     IOPARMS,A0 ;Get the Parameter base addres
MOVE.W  #iPrIOCtl,csCode(A0)  ;Set up a text streaming call
MOVE.L  A1,csParam+lParam1(A0)  ;Parameter one is a            
 ;pointer to the text
MOVE.L  #(TEXT_STRING_END-TEXT_STRING),                        csParam+lParam2(A0)
;Parameter two is the length of the text
CLR.L csParam+lParam3(A0)    ;No third Parameter
_CONTROL
 LEA      IOPARMS,A0         ;Get the Parameter base address
MOVE.W  ioResult(A0),D0   ;Check for an error
CMP.W   #0,D0                    ;is result ok?
BEQ     @2                         ;Yes skip the error bell MOVE.W
 #30,-(SP)                ;beep length
_SYSBEEP                           ;beep to indicate error
 BRA     @4

@2
;------ PRINT A CR+LF JUST FOR THE FUN OF IT --------
LEA   IOPARMS,A0            ;Get the Parameter base addres
MOVE.W  #iPrDevCtl,csCode(A0)   ;Set up a control type call
MOVE.L  #iPrLineFeed,csParam+lParam1(A0) 
 ;only 1? parameter (CR+LF)
CLR.L   csParam+lParam2(A0)     ;Parameter 2 undetermined
CLR.L    csParam+lParam3(A0)
_CONTROL
LEA     IOPARMS,A0         ;Get the Parameter base address
MOVE.W  ioResult(A0),D0          ;Check for an error
CMP.W   #0,D0                    ;is result ok?
BEQ     @3                         ;Yes skip the error bell
MOVE.W  #30,-(SP)                ;beep length
_SYSBEEP                           ;beep to indicate error
BRA     @4

@3
;---- EJECT A PAGE SO THAT WE CAN SEE WHAT HAPPENS
LEA     IOPARMS,A0          ;Get the Parameter base address
MOVE.W  #iPrDevCtl,csCode(A0)   ;Set up a control type call
MOVE.L  #iPrPageEnd,csParam+lParam1(A0) 
 ;only 1 parameter (eject)
CLR.L   csParam+lParam2(A0)
CLR.L   csParam+lParam3(A0)
_CONTROL
LEA     IOPARMS,A0          ;Get the Parameter base address
MOVE.W  ioResult(A0),D0          ;Check for an error
CMP.W   #0,D0                    ;is result ok?
 BEQ.S    @4                       ;Yes skip the error bell
 MOVE.W  #30,-(SP)                 ;beep length
_SYSBEEP                           ;beep to indicate error
@4
 RTS
 ;        Data Structures
TEXT_STRING      DC.B    'HELLO'
TEXT_STRING_END
.ALIGN  2
 
IOPARMS          DCB.L    20,0
; ------------------   end of program -------------------------------

Letters

First off, I want you to know that I really enjoy reading MacTutor, especially the articles on assembly language. Second I want to report a slight error on page 37 of the June issue. In figure 1 of that issue, a Pascal string is shown as 'fName: String[63]' with it's assembly equivalent as 'DCB.B 63,0'. This could be very misleading. A pascal string is always preceded by a one byte length byte. Thus STR[63] is rendered by DCB.B 64,0. Since using this structure as it was shown could cause an odd alignment of the next data structure, watch out for the 'ole length byte. It could be a difficult bug to track down! Thanks again for an interesting and informative publication.

Made my Day with Modula-2

Terri Wiles, President

Compu-Craft

Thank you for "making my day". We have just recieved the back issues we ordered. It is utterly exciting to see so many articles of substance, especially after months of searching through the pages and pages of the fluff of which certain other Mac magazines are comprised. It is particularly encouraging to me to see articles about Modula-2. I certainly want to express my most sincere hope that this will become a regular column, with particular emphasess on the task of interfacing with the Macintosh.

 
AAPL
$106.98
Apple Inc.
+0.00
MSFT
$46.05
Microsoft Corpora
+0.00
GOOG
$550.31
Google Inc.
+0.00

MacTech Search:
Community Search:

Software Updates via MacUpdate

Dropbox 2.10.44 - Cloud synchronization...
Dropbox is an application that creates a special Finder folder that automatically syncs online and between your computers. It allows you to both backup files and keep them up-to-date between systems... Read more
Sandvox 2.9.2 - Easily build eye-catchin...
Sandvox is for Mac users who want to create a professional looking website quickly and easily. With Sandvox, you don't need to be a Web genius to build a stylish, feature-rich, standards-compliant... Read more
Cocktail 8.0.1 - General maintenance and...
Cocktail is a general purpose utility for OS X that lets you clean, repair and optimize your Mac. It is a powerful digital toolset that helps hundreds of thousands of Mac users around the world get... Read more
LibreOffice 4.3.3.2 - Free Open Source o...
LibreOffice is an office suite (word processor, spreadsheet, presentations, drawing tool) compatible with other major office suites. The Document Foundation is coordinating development and... Read more
VMware Fusion 7.0.1 - Run Windows apps a...
VMware Fusion allows you to create a Virtual Machine on your Mac and run Windows (including Windows 8.1) and Windows software on your Mac. Run your favorite Windows applications alongside Mac... Read more
OneNote 15.3.2 - Free digital notebook f...
OneNote is your very own digital notebook. With OneNote, you can capture that flash of genius, that moment of inspiration, or that list of errands that's too important to forget. Whether you're at... Read more
Audio Hijack Pro 2.11.4 - Record and enh...
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 with Audio Hijack... Read more
Iridient Developer 3.0.0 beta 3 - Powerf...
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
TextWrangler 4.5.11 - Free general purpo...
TextWrangler is the powerful general purpose text editor, and Unix and server administrator's tool. Oh, and also, like the best things in life, it's free. TextWrangler is the "little brother" to... Read more
NeoFinder 6.6 - Catalog your external me...
NeoFinder (formerly CDFinder) rapidly organizes your data, either on external or internal disks, or any other volumes. It catalogs all your data, so you stay in control of your data archive or disk... Read more

Latest Forum Discussions

See All

This Is Not a Test Goes Free, Permanentl...
This Is Not a Test Goes Free, Permanently Posted by Jessica Fisher on October 31st, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Swap Heroes Review
Swap Heroes Review By Campbell Bird on October 31st, 2014 Our Rating: :: STRATEGIC SWAPPINGUniversal App - Designed for iPhone and iPad Rotate a cast of heroes to fend of waves of monsters in this difficult, puzzle rpg.   | Read more »
Night Sky Pro™ (Reference)
Night Sky Pro™ 3.0.1 Device: iOS Universal Category: Reference Price: $2.99, Version: 3.0.1 (iTunes) Description: Night Sky Pro™Wonder No More™ Night Sky Pro™ is the ultimate stargazing experience. From the creators of the original... | Read more »
Audio Defence : Zombie Arena (Games)
Audio Defence : Zombie Arena 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: A zombie shooter audio game. Made from gut-wrenching 3D binaural sound, for a new kind of weird immersion. You... | Read more »
RPG Asdivine Hearts (Games)
RPG Asdivine Hearts 1.1.0 Device: iOS Universal Category: Games Price: $3.99, Version: 1.1.0 (iTunes) Description: SPECIAL PRICE50% OFF (USD 7.99 -> USD 3.99)!!! Travel alongside four companions and a cat in the adventure of a... | Read more »
Haunt the House: Terrortown (Games)
Haunt the House: Terrortown 1.0.1 Device: iOS Universal Category: Games Price: $.99, Version: 1.0.1 (iTunes) Description: 66.6% OFF! SPECIAL SPOOKY HALLOWEEN LAUNCH PRICE! 66.6% OFF! ...What was that sound? Is somebody there? | Read more »
SAS: Zombie Assault 4 Review
SAS: Zombie Assault 4 Review By Jennifer Allen on October 30th, 2014 Our Rating: :: FLAWED SHOOTERUniversal App - Designed for iPhone and iPad Shoot everything that moves in this fun, if flawed, twin-stick shooter.   | Read more »
Naailde the Witch Review
Naailde the Witch Review By Amy Solomon on October 30th, 2014 Our Rating: :: PITCH-PERFECT STORYTELLINGUniversal App - Designed for iPhone and iPad Marvelous storytelling, narration, and moving illustrations make this storybook... | Read more »
1st & Goal Review
1st & Goal Review By Andrew Fisher on October 30th, 2014 Our Rating: :: FOR THE D&D LOVING QBUniversal App - Designed for iPhone and iPad 1st & Goal is a board gamer’s football game, a football fan’s board game, and... | Read more »
French Developer Pated Unveils Seashine
French Developer Pated Unveils Seashine Posted by Ellis Spice on October 30th, 2014 [ permalink ] French one-man studio Pated has unveiled Seashine, “a poetic journey into the abyss.” Players take on the role of a jellyfish strugglin | Read more »

Price Scanner via MacPrices.net

Apple Regains Momentum As Windows Stutters An...
The latest smartphone sales data from Kantar Worldpanel ComTech, for the three months to March 2014, shows Apple performing strongly in the first quarter of the year, with sales bouncing back in... Read more
Worldwide Smartphone Shipments Increase 25.2%...
New smartphone releases and an increased emphasis on emerging markets drove global smartphone shipments above 300 million units for the second consecutive quarter, according to preliminary data from... Read more
Apple now offering refurbished 2014 15-inch M...
The Apple Store is now offering Apple Certified Refurbished 2014 15″ Retina MacBook Pros for up to $400 off the cost of new models. An Apple one-year warranty is included with each model, and... Read more
Apple drops prices on refurbished 2013 Retina...
The Apple Store has dropped prices on 2013 Apple Certified Refurbished 13″ and 15″ Retina MacBook Pros, with Retina models now available starting at $999. Apple’s one-year warranty is standard, and... Read more
New 2.8GHz Mac mini on sale for $949, save $5...
Abt Electronics has the new 2.8GHz Mac mini in stock and on sale for $949.05 including free shipping. Their price is $50 off MSRP, and it’s the lowest price available for this model from any reseller... Read more
Sale! 3.7GHz Quad Core Mac Pro available for...
 B&H Photo has the 3.7GHz Quad Core Mac Pro on sale for $2649 including free shipping plus NY sales tax only. Their price is $350 off MSRP, and it’s the lowest price for this model from any... Read more
Mujjo Steps Up The Game With Refined Touchscr...
Netherlands based Mujjo have just launched their Refined Touchscreen Gloves, stepping up their game. The gloves feature a updated elegant design that takes these knitted gloves to the next level. A... Read more
Sale! Preorder the new 27-inch 5K iMac for $2...
 Abt Electronics has the new 27″ 3.5GHz 5K iMac on sale and available for preorder for $2374.05 including free shipping. Their price is $125 off MSRP, and it’s the lowest price available for this... Read more
Simplex Solutions Inc. Brings Secure Web Surf...
New York based Simplex Solutions Inc. has announced the release and immediate availability of Private Browser 1.0, its revolutionary new secure web browser developed for iPhone, iPad and iPod touch... Read more
Save up to $180 off MSRP with an Apple refurb...
The Apple Store has Apple Certified Refurbished 2014 MacBook Airs available for up to $180 off the cost of new models. An Apple one-year warranty is included with each MacBook, and shipping is free.... Read more

Jobs Board

Position Opening at *Apple* - Apple (United...
**Job Summary** Every day, business customers come to the Apple Store to discover what powerful, easy-to-use Apple products can do for them. As a Business Leader, Read more
Sr. Manager, *Apple* Deployment Programs fo...
**Job Summary** Apple is seeking candidates for a new position on the Education Content and Technology team. iPad and Mac is in the hands of millions of teachers and Read more
*Apple* Solutions Consultant (ASC) - Apple I...
…important role that the ASC serves is that of providing an excellent Apple Customer Experience. Responsibilities include: * Promoting Apple products and solutions Read more
*Apple* Solutions Consultant (ASC) - Apple I...
…important role that the ASC serves is that of providing an excellent Apple Customer Experience. Responsibilities include: * Promoting Apple products and solutions Read more
*Apple* Solutions Consultant (ASC) - Apple I...
…important role that the ASC serves is that of providing an excellent Apple Customer Experience. Responsibilities include: * Promoting Apple products and solutions Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.