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
$102.50
Apple Inc.
+0.25
MSFT
$45.43
Microsoft Corpora
+0.55
GOOG
$571.60
Google Inc.
+2.40

MacTech Search:
Community Search:

Software Updates via MacUpdate

VueScan 9.4.41 - 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
Cloud 3.0.0 - File sharing from your men...
Cloud is simple file sharing for the Mac. Drag a file from your Mac to the CloudApp icon in the menubar and we take care of the rest. A link to the file will automatically be copied to your clipboard... Read more
LibreOffice 4.3.1.2 - 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
SlingPlayer Plugin 3.3.20.505 - Browser...
SlingPlayer is the screen interface software that works hand-in-hand with the hardware inside the Slingbox to make your TV viewing experience just like that at home. It features an array of... Read more
Get Lyrical 3.8 - Auto-magically adds ly...
Get Lyrical auto-magically add lyrics to songs in iTunes. You can choose either a selection of tracks, or the current track. Or turn on "Active Tagging" to get lyrics for songs as you play them.... Read more
Viber 4.2.2 - Send messages and make cal...
Viber lets you send free messages and make free calls to other Viber users, on any device and network, in any country! Viber syncs your contacts, messages and call history with your mobile device,... Read more
Cocktail 7.6 - General maintenance and o...
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
LaunchBar 6.1 - Powerful file/URL/email...
LaunchBar is an award-winning productivity utility that offers an amazingly intuitive and efficient way to search and access any kind of information stored on your computer or on the Web. It provides... Read more
Maya 2015 - Professional 3D modeling and...
Maya is an award-winning software and powerful, integrated 3D modeling, animation, visual effects, and rendering solution. Because Maya is based on an open architecture, all your work can be scripted... Read more
BBEdit 10.5.12 - Powerful text and HTML...
BBEdit is the leading professional HTML and text editor for the Mac. Specifically crafted in response to the needs of Web authors and software developers, this award-winning product provides a... Read more

Latest Forum Discussions

See All

Qube Kingdom – Tips, Tricks, Strategies,...
Qube Kingdom is a tower defense game from DeNA. You rally your troops – magicians, archers, knights, barbarians, and others – and fight against an evil menace looking to dominate your kingdom of tiny squares. Planning a war isn’t easy, so here are a... | Read more »
Qube Kingdom Review
Qube Kingdom Review By Nadia Oxford on August 29th, 2014 Our Rating: :: KIND OF A SQUARE KINGDOMUniversal App - Designed for iPhone and iPad Qube Kingdom has cute visuals, but it’s a pretty basic tower defense game at heart.   | Read more »
Fire in the Hole Review
Fire in the Hole Review By Rob Thomas on August 29th, 2014 Our Rating: :: WALK THE PLANKUniversal App - Designed for iPhone and iPad Seafoam’s Fire in the Hole looks like a bright, 8-bit throwback, but there’s not enough booty to... | Read more »
Alien Creeps TD is Now Available Worldwi...
Alien Creeps TD is Now Available Worldwide Posted by Ellis Spice on August 29th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Dodo Master Review
Dodo Master Review By Jordan Minor on August 29th, 2014 Our Rating: :: NEST EGGiPad Only App - Designed for the iPad Dodo Master is tough but fair, and that’s what makes it a joy to play.   | Read more »
Motorsport Manager Review
Motorsport Manager Review By Lee Hamlet on August 29th, 2014 Our Rating: :: MARVELOUS MANAGEMENTUniversal App - Designed for iPhone and iPad Despite its depth and sense of tactical freedom, Motorsport Manager is one of the most... | Read more »
Motorsport Manager – Beginner Tips, Tric...
The world of Motorsport management can be an unforgiving and merciless one, so to help with some of the stress that comes with running a successful race team, here are a few hints and tips to leave your opponents in the dust. | Read more »
CalPal Update Brings the App to 2.0, Add...
CalPal Update Brings the App to 2.0, Adds Lots of New Stuff Posted by Ellis Spice on August 29th, 2014 [ permalink ] | Read more »
Baseball Battle Review
Baseball Battle Review By Jennifer Allen on August 29th, 2014 Our Rating: :: SIMPLE HITTINGUniversal App - Designed for iPhone and iPad Simple and cute, Baseball Battle is a fairly fun baseball game for those looking for something... | Read more »
Checkmark 2.1 Update Released, and it’s...
Checkmark 2.1 Update Released, and it’s on Sale for a Limited Time Posted by Jessica Fisher on August 29th, 2014 [ permalink ] | Read more »

Price Scanner via MacPrices.net

Labor Day Weekend MacBook Pro sale; 15-inch m...
B&H Photo has the new 2014 15″ Retina MacBook Pros on sale for up to $125 off MSRP. Shipping is free, and B&H charges NY sales tax only. They’ll also include free copies of Parallels Desktop... Read more
Labor Day Weekend iPad mini sale; $50 to $100...
Best Buy has the iPad mini with Retina Display (WiFi models) on sale for $50 off MSRP on their online store for Labor Day Weekend. Choose free shipping or free local store pick up. Price is for... Read more
13-inch 1.4GHz MacBook Air on sale for $899,...
Adorama has the new 2014 13″ 1.4GHz/128GB MacBook Air on sale for $899.99 including free shipping plus NY & NJ tax only. Their price is $100 off MSRP. Read more
It’s Official: Apple Issues Invitations To Se...
Apple has issued one of its characteristically cryptic press invitations for a special event to be held at the Flint Center for the Performing Arts in hometown Cupertino on Sept. 9, 2014 at 10:00 am... Read more
Tablet Shipments To See First On-year Decline...
TrendForce analyst Caroline Chen notes that when the iPad launched in 2010, it was an instant hit and spurred a tablet PC revolution, with tablets so popular that that notebook PC sales stagnated and... Read more
SOBERLINK Releases Apple iOS Compatible Handh...
Cypress, California based SOBERLINK, Inc., creator of the first handheld Breathalyzer designed to improve recovery outcomes, continues to show prominence in the mobile alcohol monitoring space with... Read more
New 21″ 1.4GHz iMac on sale again for $999, s...
Best Buy has the new 21″ 1.4GHz iMac on sale for $999.99 on their online store. Their price is $100 off MSRP. Choose free shipping or free local store pick up. Price is for online orders only, in-... Read more
Smartphone Outlook Remains Strong for 2014, U...
According to a new mobile phone forecast from the International Data Corporation (IDC) Worldwide Quarterly Mobile Phone Tracker, more than 1.25 billion smartphones will be shipped worldwide in 2014,... Read more
Save up to $60 with Apple refurbished iPod to...
The Apple Store has Apple Certified Refurbished 5th generation iPod touches available starting at $149. Apple’s one-year warranty is included with each model, and shipping is free. Many, but not all... Read more
12-Inch MacBook Air Coming in 4Q14 or 2015 –...
Digitimes’ Aaron Lee and Joseph Tsai report that according to Taiwan-based upstream supply chain insiders, Apple plans to launch a thinner MacBook model either at year end 2014 or in 2015, and that... 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* 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* 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* 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
Senior Event Manager, *Apple* Retail Market...
…This senior level position is responsible for leading and imagining the Apple Retail Team's global event strategy. Delivering an overarching brand story; in-store, Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.