TweetFollow Us on Twitter

LS FORTRAN 2.0
Volume Number:6
Issue Number:3
Column Tag:Jörg's Folder

Language Systems FORTRAN 2.0

By Jörg Langowski, MacTutor Editorial Board

“Language Systems FORTRAN 2.0”

A new version of the Languages Systems FORTRAN for MPW has just arrived here. Version 2.0 has been improved a lot compared to the previous version - not that version 1.2.1 wasn’t already a very good product. I’d like to give a short overview and some code examples in this month’s column, so that you can appreciate the ease with which Fortran application can now be created on the Mac, or ported from a mainframe to the Mac.

But first of all, a figure that might be very important for many of you Fortran users: the new compiler runs the Whetstone benchmark at 1072 K whetstones/sec (Language Systems FORTRAN 2.0, opt=3, MacIIx) instead of the 425 K whetstones/sec that the version 1 compiler produced. The optimizer now actually works, and depending on the type of the code there can be very significant speed differences from one optimization level to the other. The matrix multiplication benchmark that I described in the V5#8 column, now runs in 2.66 seconds (opt=3, MacIIx) instead of 6.52 seconds (145% faster), if you don’t take the constant index expression out of the loop; or in 2.55 instead of 4.65 seconds (82% faster), if the common subexpression elimination is done by hand on the source code. Thus - at least for these cases - LS Fortran produces code that is now even faster that MPW Pascal’s code, and significantly faster than the same Fortran code on a MicroVAX II.

Built-in Mac interface to FTN programs

The Macintosh interface to Fortran programs has been extensively improved and simplified. It has always been possible to create a typical Macintosh application around a central event loop with mouse down, update and activate handlers etc. entirely in Fortran, and there is a Multifinder-compatible sample Fortran application on the Examples disk. But this is not what the typical Fortran user would have in mind when porting a functioning application from a mainframe to the Mac. Rather, one would like to conserve most of the existing Fortran code and add to it the ease of use of the Macintosh, without having to write a whole new user interface around it.

With the new LS Fortran, such an operation is extremely easy, as long as your program is well-written, i.e., sufficiently modular. There are enough examples of GOTO-clobbered spaghetti code with 25-page long subroutines that I wouldn’t wish my worst enemy having to adapt to a new machine, but as long as you can cut up your code into distinct routines that each fulfil a defined task and then return to a main program, porting the program to the Macintosh becomes child’s play.

To achieve this, Language Systems have expanded on a feature of their system: namely, that a LS Fortran program does not immediately exit to the Finder after the END statement, but returns into a run time system that lets you edit, save or print the output window. The new compiler version allows the user to add new menus and menu items to the menu bar that is drawn after exit from the main program. Each of the menu items can be assigned a pointer to a subroutine that will be executed when the menu is selected. Control returns to the Fortran run time system when the subroutine finishes; there, a new menu selection may be made, either from the default Fortran File, Edit, and Fonts menus, or from any added user menus.

Furthermore, a routine has been added that gives the Fortran program access to the menu items in the Fortran run time menu bar. For instance, to quit to the Finder immediately at the end of a program - instead of keeping the editable output window and the menus available - all you need to do is

CALL DoMenu(‘File’,’Quit’)

at the end of your main program.

The example - a simple graphics display program

Using the new menu features, the Fortran program will be structured in such a way that the main program only does data, window, etc. initialization and sets up the user menus, while the actual work is done by subroutines that are invoked through menu selections. Listing 1 gives an example of such a program, a simple facility to read a file with consecutive lines of x/y coordinate pairs and to plot the corresponding graph in various ways in a graphics window.

Furthermore, one of the subroutines (Listing 2) is written in Pascal and illustrates the possibility of passing parameters either through the procedure’s parameter list or through accessing Fortran’s COMMON data directly.

You’ll notice that two new Fortran compiler directives appear at the beginning of the program. The compiler directive !!G Toolbox.finc is used to load a precompiled ‘global include’ file that contains toolbox variable, structure and parameter definitions. This speeds up recompiling a program considerably if you use lots of toolbox definitions. Global include files can be created to the needs of each individual program, including only those definitions used in the code; or one can simply create one file that contains all the definitions. In the latter case, compiling takes only slightly longer.

Just as the directive !!M Inlines.f was used in version 1.2.1 to make the trap definitions known to the compiler, we can now use !!MP Inlines.f to simplify the calling mechanism. In the latter case, all trap routines are automatically declared as PEXTERNAL, which means that parameter will be passed by value rather than by reference (the Fortran default). This allows you to write

 call SetRect  (%ref(myRect),
 1 int2(20),int2(40),int2(500),int2(235))

rather than

C 1

 call SetRect  (myRect,
 1 %val(int2(20)),%val(int2(40)),
 2 %val(int2(500)),%val(int2(235)))

as you would have to do when call-by-reference is the default. Since toolbox calls receive a great number of their parameters by value, this saves a lot of writing and makes the program much more readable. Of course, the old directive !!M Inlines.f is still available. You may now also declare any other subroutine PEXTERNAL, and further CALLs to that routine will use Pascal calling conventions.

Fortran subroutines may also be declared to receive some of their arguments by value; you write, in the subroutine definition,

C 2

SUBROUTINE XX(A,B,%VAL(I)),

and the routine will expect the value of I on the stack, not its address. This can be important for writing certain filter procedures that are called by toolbox routines.

The Main Program

The main program will first move the Fortran output window to the bottom of the (Mac+) screen, then set up the user menu with its items and their corresponding subroutines. Routines which are not defined in the same source file must of course be declared EXTERNAL (or PEXTERNAL or CEXTERNAL). OutWindowClear, which erases the Fortran output window, is such a case.

After the calls to AddMenuItem, we type a blank line (type *) to have at least one reference to the window output routines in the main program, and thus create the output window. Thereafter, a graphics output window is created.

We must call DoMenu at least once before the main program exits if we want to modify some of the user menu items, for instance set a check mark. Since the menu bar is not created before the main program exits or DoMenu is called, any calls to CheckItem, SetItem, etc. won’t have an effect before.

One line - commented out in the example - calls a routine that was undocumented in the version of the manual that I received (thanks, Claudia Vaughan from Language Systems, for the information!): SetIdleProc receives a pointer to a routine that will be called regularly from the Fortran run time system’s main event loop. Here, that routine would just beep once (that’s why I commented it out in the final version). SetIdleProc could be used to do background calculations or refresh graphics windows, since the present system does not allow to associate update routines with windows, unless the complete event loop is rewritten in Fortran.

File access through the SF dialog

The routine that reads in the data, readData, shows a non-standard extension that LS has made to the Fortran OPEN statement:

C 3

open(unit, file=*, status=’OLD’)

will display the standard file dialog for opening a file and assign the selected file to the Fortran unit number;

C 4

open(unit, file=*, status=’NEW’)

of course, will display the ‘Save File’ dialog and have the user input the file name. The actual file name, if needed, can be obtained through the Fortran INQUIRE statement. By default, files are of type ‘TEXT’, creator ‘MPS ‘; this can be changed through the keywords CREATOR and FILETYPE in the Open statement. The latter keyword also changes the files displayed in the ‘Open File’ dialog.

Many other keywords have been added to the Open statement, some of which have no effect at all, but ensure compatibility with other Fortran dialects (e.g. VAX) that use them.

Cross-language calling and COMMON access

Most of the remaining routines which display the data, play around with the output windows, and change some parameters, require no comment; However, I added one subroutine which calls a Pascal procedure, which in turn accesses the Fortran COMMON.

Calling a Pascal procedure from Fortran is easy; you simply declare the routine PEXTERNAL and pass the parameters in the same order as in the Pascal declaration. The default parameter passing is by value, references to variables can be passed by writing %ref(param). The Pascal procedure (Listing 2) receives a window pointer and a string, and displays the string in the window.

The window pointer - in our particular example - is also accessible through a named COMMON block, /windows/. The old LS Fortran allocated common memory dynamically, i.e., when a common block was first used, a heap object of the size of the common was created. This method still exists in Fortran 2.0; if you compile a program with the -dyn option, common blocks are created dynamically on the heap. However, with MPW 3.0 it is possible to use the linker for keeping static common blocks in the global data area. Fortran 2.0 programs compiled under MPW 3.0 will automatically static commons, unless you use the -dyn option.

The -f option in the MPW Link command causes the linker to treat duplicate definitions of a global data block as references to the same data block; thus, common blocks from different modules that have the same name will be automatically mapped onto each other.

All we need to do to access a static Fortran common from Pascal is to create a global variable with ‘the same name’ as the common block (thanks, Claudia Vaughan, again). ‘The same name’ has a particular meaning: Fortran names are uppercased for the linker, and COMMON names are enclosed between underscores; thus, the /windows/ common block is called _WINDOWS_ in the link map. The Pascal routine must define a global variable named _WINDOWS_, and the compiler must be told by the {$J+} directive that global variables may be defined externally. We define _WINDOWS_ as a global Pascal record having the same fields as the common block in the Fortran program, so that all common variables can be accessed conveniently through the fields of the record.

The Fortran version that I used still had some problems with dynamic commons, so that I couldn’t try out the old strategy to access COMMONs from Pascal using the run time library routine COMMONADDRESS; dynamic Fortran handling will work in the released version, as LS assured me.

More extensions

Language Systems have gone to great lengths to make sure compatibility of their Fortran with most mainframe implementations, notably VAX Fortran. Apart from the extensions I already mentioned, you can now omit arguments from subroutine calls (an integer*4 zero is pushed on the stack for each omitted argument), you can initialize data in the type declaration (real*4 x/4.0/ is a legal construct), BYTE may be used instead of INTEGER*1, and all the VAX keywords in I/O statements are recognized as syntactically legal. NAMELIST and ENCODE/DECODE also have the same syntax as on the VAX. Even the IOSTAT error codes have been changed to be equal to the corresponding VAX error numbers, where applicable.

What this means in practice is that you can take almost any code that runs on a VAX, feed it unchanged to the Language Systems compiler, and it will not just swallow it without complaints, but in most cases produce an application that produces the same result as the VAX program. In fact, the efforts for VAX compatibility have been extended to the point where Language Systems is encouraging third-party developers to create libraries that emulate VAX system calls, which would make the compatibility even closer.

I’d like to conclude with some remarks on the excellent manual; its format has been changed, starting with general remarks on how to get a Fortran program to run under MPW, and putting the formal language definitions to the end of the text. The MPW introduction has obviously been written by someone who exactly understands the difficulties that the average mainframe Fortran person would have dealing with such a bizarre object as the Macintosh and MPW running on it. I quote: “Using the Directory command. Type the line DIRECTORY. Then press the enter key (not the return key).” Just one example (there are many more) for the attention that the manual writer has given to the details.

In summary, the Fortran that combines ease of porting from mainframes with easy user interface creation, full Toolbox access and speed seems to have finally arrived. Expect to hear more of it later. We’ll continue next month with C++, and even some Forth again (!). Till then.

Listing 1: 
 program Plot
c(c) J. Langowski/MacTutor Jan. 1990
cexample that uses some of the new features of
cLanguage Systems Fortran 2.0 for MPW
csome of the lines might have been split by editing

!!G Toolbox.finc
!!MP Inlines.f

 real*4 x(500),y(500)
 integer*4 ndata,plotType,nil
 parameter (nil=0)
 record /WindowPtr/ wPtr  
 common /windows/ wPtr
 common /theData/ x,y,ndata,plotType
 
 record /Rect/ myRect
 string title
 external OutWindowClear,MyIdleProc
 
 call MoveOutWindow (20,260,500,342)
 
 call addmenuitem (‘Graph’,’Read ’,readData)
 call addmenuitem (‘Graph’,’Display Graph’,plotGraph)
 call addmenuitem (‘Graph’,’Erase Graph’,clearGraph)
 call addmenuitem (‘Graph’,’Hide Graph’,hideGraph)
 call addmenuitem (‘Graph’,’Erase Text’, OutWindowClear)
 call addmenuitem (‘Graph’,’(-’,dummy)
 call addmenuitem (‘Graph’,’By item #’,byItem)
 call addmenuitem (‘Graph’,’By x value’,byXval)
 call addmenuitem (‘Graph’,’(-’,dummy)
 call addmenuitem (‘Graph’,’Draw a string’, DrawAString)
 call addmenuitem (‘Graph’,’Sort data’,sortData)
 
 type * ! shows text output window
 
 title = ‘Graphics Window’
 call SetRect (%ref(myRect),int2(20),int2(40), int2(500),int2(235))

 wPtr.wp = NewWindow (nil,myRect,title,int2(.true.),
 1 noGrowDocProc,nil,int2(.false.),int4(0))
 
 call DoMenu (‘Graph’,’By item #’)
cinitializes plot flag & sets check mark
 
ccall SetIdleProc(MyIdleProc)
 
 end
 
 subroutine MyIdleProc
 call sysbeep(1)
 return
 end
 
 subroutine dummy
 return
 end  
 
 subroutine readData
 real*4 x(500),y(500)
 integer*4 ndata,plotType,iores
 common /theData/ x,y,ndata,plotType
 
 open (10,file=*,status=’OLD’,iostat=iores)
 
 if (iores.eq.0) then
 ndata = 0
 do while (iores.eq.0)
 ndata = ndata + 1
 read (10,*,iostat=iores) x(ndata),y(ndata)
 end do
 
 if (iores .lt. 0) then
 type *,ndata,’ points read.’
 else
 type *,’Read error - nothing read.’
 end if
 close (unit=10)
 
 end if
 return
 end
 
 subroutine plotGraph
 record /WindowPtr/ wPtr  
 common /windows/ wPtr
 
 real*4 x(500),y(500)
 real*4 maxx,minx,maxy,miny,deltax,deltay
 integer*2 xplot,yplot,winh,winw
 integer*4 ndata,plotType
 common /theData/ x,y,ndata,plotType
 
 call ShowWindow(wPtr)
 call SelectWindow(wPtr)
 maxx = x(1)
 minx=maxx
 maxy=y(1)
 miny=maxy
 
 do i=2,ndata
 maxx = max(x(i),maxx)
 minx = min(x(i),minx)
 maxy = max(y(i),maxy)
 miny = min(y(i),miny)
 end do
 
ctype *,minx,maxx,miny,maxy
 
 deltax = maxx-minx
 deltay = maxy-miny
 winh = wPtr.wp^.portRect.bottom - wPtr.wp^.portRect.top - 4
 winw = wPtr.wp^.portRect.right  - wPtr.wp^.portRect.left - 4
 
ctype *,deltax,deltay,winh,winw
 
 call SetPort(wPtr)
 call PenNormal
 call MoveTo(int2(0),int2(0))
 
 do i=1,ndata
 yplot = winh*(1.-(y(i)-miny)/deltay) + 2
 select case (plotType)
 case (0)
 xplot = winw*(i/(ndata*1.)) + 2
 case (1)
 xplot = winw*(x(i)-minx)/deltax + 2
 case default
 end select
 call lineto(xplot,yplot)
 end do
 return
 end
 
 subroutine clearGraph
 record /WindowPtr/ wPtr  
 common /windows/ wPtr
 
 call SetPort(wPtr)
 call EraseRect(wPtr.wp^.portRect)
 return
 end
 
 subroutine hideGraph
 record /WindowPtr/ wPtr  
 common /windows/ wPtr
 
 call HideWindow(wPtr)
 return
 end
 
 subroutine byItem
 real*4 x(500),y(500)
 integer*4 ndata,plotType
 common /theData/ x,y,ndata,plotType
 record /MenuHandle/ GraphMenu

 integer*2 menuGraph,itemNum,xVal
 parameter(menuGraph=5,itemNum=7,xVal=8)
 
 plotType = 0
 GraphMenu.MenuH = GetMHandle(menuGraph)
 call CheckItem(GraphMenu.MenuH, itemNum,int2(.true.))
 call CheckItem(GraphMenu.MenuH,xVal,int2(.false.))
 return
 end  
 
 subroutine byXval
 real*4 x(500),y(500)
 integer*4 ndata,plotType
 common /theData/ x,y,ndata,plotType
 record /MenuHandle/ GraphMenu

 integer*2 menuGraph,itemNum,xVal
 parameter(menuGraph=5,itemNum=7,xVal=8)
 
 plotType = 1
 GraphMenu.MenuH = GetMHandle(menuGraph)
 call CheckItem(GraphMenu.MenuH, itemNum,int2(.false.))
 call CheckItem(GraphMenu.MenuH,xVal,int2(.true.))
 return
 end
 
 subroutine drawAString
 string st
 record /WindowPtr/ wPtr  
 common /windows/ wPtr
 pexternal DrawMyString
 
 st = ‘This String comes from Fortran.’
 call DrawMyString(wPtr,st)
 return
 end
 
 subroutine sortData
 
 call AlertBox (‘Not implemented yet.’)
 return
 end
Listing 2
{$J+}
 { This directive tells linker to externalize global variable references 
so that the static common /WINDOWS/ is made known to the Pascal routine. 
Its name in the linker symbol table is _WINDOWS_; thus our variable must 
have that name. }
unit PasSub;
interface
uses MemTypes, QuickDraw, OSIntf, ToolIntf, Traps;
procedure DrawMyString (wp:WindowPtr; st:Str255);
implementation
 
type  commonWind =  record
 wp:WindowPtr
 end;

var_WINDOWS_ : commonWind;

procedure DrawMyString (wp:WindowPtr; st:Str255);
varmyStr : Str255;
begin
 SetPort(wp);
 PenNormal; MoveTo(50,50);
 TextFont(Monaco); TextSize(12);
 DrawString(st);
 
 SetPort(_WINDOWS_.wp);
 PenNormal; MoveTo(50,100);
 TextFont(Geneva); TextSize(12);
 DrawString(‘The COMMON can also be 
 accessed through Pascal.’);
end;
end.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Adobe Audition CC 2018 11.0.1 - Professi...
Audition CC 2018 is available as part of Adobe Creative Cloud for as little as $19.99/month (or $9.99/month if you're a previous Audition customer). Adobe Audition CC 2018 empowers you to create and... Read more
Adobe After Effects CC 2018 15.0.1 - Cre...
After Effects CC 2018 is available as part of Adobe Creative Cloud for as little as $19.99/month (or $9.99/month if you're a previous After Effects customer). The new, more connected After Effects CC... Read more
Adobe Premiere Pro CC 2018 12.0.1 - Digi...
Premiere Pro CC 2018 is available as part of Adobe Creative Cloud for as little as $19.99/month (or $9.99/month if you're a previous Premiere Pro customer). Adobe Premiere Pro CC 2018 lets you edit... Read more
Adobe Photoshop CC 2018 19.1 - Professio...
Photoshop CC 2018 is available as part of Adobe Creative Cloud for as little as $19.99/month (or $9.99/month if you're a previous Photoshop customer). Adobe Photoshop CC 2018, the industry standard... Read more
Spotify 1.0.69.336. - Stream music, crea...
Spotify is a streaming music service that gives you on-demand access to millions of songs. Whether you like driving rock, silky R&B, or grandiose classical music, Spotify's massive catalogue puts... Read more
rekordbox 5.1.1.0001 - Professional DJ m...
rekordbox is the best way of preparing and managing your tracks, be it at home, in the studio, or even on the plane! It allows you to import music from other music-management software using the... Read more
Mactracker 7.7.1 - Database of all Mac m...
Mactracker provides detailed information on every Mac computer ever made, including items such as processor speed, memory, optical drives, graphic cards, supported OS X versions, and expansion... Read more
Printopia 3.0.6 - Share Mac printers wit...
Run Printopia on your Mac to share its printers to any capable iPhone, iPad, or iPod Touch. Printopia will also add virtual printers, allowing you to save print-outs to your Mac and send to apps.... Read more
Luminar 2018 1.1.0 - Powerful, adaptive,...
Luminar 2018 is the new full-featured image editor that adapts to the way you edit photos. Over 300 essential tools to fix, edit, and enhance your photos with comfort. The future of photo editing is... Read more
Opera 50.0.2762.67 - High-performance We...
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

Latest Forum Discussions

See All

Jydge hints, tips, and tricks - Everythi...
Just released on iOS, Jydge is a prequel to Neon Chrome and is set in the same universe. Not just that, but the games play in pretty similar ways with them both being twin stick shooters full of surprises. As you might expect from a 10tons game,... | Read more »
World of Warships Blitz: A guide to tact...
Ahoy mates! It's time to set out on the high seas for some PvP battles, and ... sorry, actually, World of Warships Blitz has nothing to do with pirates. Let's start over. [Read more] | Read more »
Around the Empire: What have you missed...
Around this time every week we're going to have a look at the comings and goings on the other sites in Steel Media's pocket-gaming empire. We'll round up the very best content you might have missed, so you're always going to be up to date with the... | Read more »
Everything about Hero Academy 2: Part 4...
In this part of our Hero Academy 2 guide, we're going to have a look at some of the tactics you're going to need to learn if you want to rise up the ranks. We're going to start off slow, then get more advanced in the next section. [Read more] | Read more »
All the best games on sale for iPhone an...
Another week has flown by. Sometimes it feels like the only truly unstoppable thing is time. Time will make dust of us all. But before it does, we should probably play as many awesome mobile videogames as we can. Am I right, or am I right? [Read... | Read more »
The 7 best games that came out for iPhon...
Well, it's that time of the week. You know what I mean. You know exactly what I mean. It's the time of the week when we take a look at the best games that have landed on the App Store over the past seven days. And there are some real doozies here... | Read more »
Popular MMO Strategy game Lords Mobile i...
Delve into the crowded halls of the Play Store and you’ll find mobile fantasy strategy MMOs-a-plenty. One that’s kicking off the new year in style however is IGG’s Lords Mobile, which has beaten out the fierce competition to receive Google Play’s... | Read more »
Blocky Racing is a funky and fresh new k...
Blocky Racing has zoomed onto the App Store and Google Play this week, bringing with it plenty of classic kart racing shenanigans that will take you straight back to your childhood. If you’ve found yourself hooked on games like Mario Kart or Crash... | Read more »
Cytus II (Games)
Cytus II 1.0.1 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0.1 (iTunes) Description: "Cytus II" is a music rhythm game created by Rayark Games. It's our fourth rhythm game title, following the footsteps of three... | Read more »
JYDGE (Games)
JYDGE 1.0.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.0 (iTunes) Description: Build your JYDGE. Enter Edenbyrg. Get out alive. JYDGE is a lawful but awful roguehate top-down shooter where you get to build your... | Read more »

Price Scanner via MacPrices.net

Where to buy 13″ Apple MacBook Pros for up to...
B&H Photo has 13″ MacBook Pros on sale for $100 off MSRP. Shipping is free, and B&H charges sales tax for NY & NJ residents only: – 13-inch 2.3GHz/128GB Space Gray MacBook Pro (MPXQ2LL/A... Read more
Apple Refurbished 2017 iMacs available starti...
Apple has a full line of Certified Refurbished iMacs available for up to $350 off original MSRP. Apple’s one-year warranty is standard, and shipping is free. The following models are available: – 27... Read more
Apple offers clearance 2016 13-inch MacBook A...
Apple has Certified Refurbished 2016 13″ MacBook Airs available starting at $809. An Apple one-year warranty is included with each MacBook, and shipping is free: – 13″ 1.6GHz/8GB/128GB MacBook Air: $... Read more
Clearance Apple refurbished iMacs available s...
Apple has previous-generation Certified Refurbished 2015 21″ & 27″ iMacs available starting at $849. Apple’s one-year warranty is standard, and shipping is free. The following models are... Read more
How to save $150-$420 on the purchase of a 20...
B&H Photo has 15″ MacBook Pros on sale for up to $200 off MSRP. Shipping is free, and B&H charges sales tax for NY & NJ residents only: – 15″ 2.8GHz Touch Bar MacBook Pro Space Gray (... Read more
How to save $100-$180 on the purchase of a 20...
B&H Photo has 13″ MacBook Airs on sale for $50-$120 off MSRP. Shipping is free, and B&H charges sales tax for NY & NJ residents only: – 13″ 1.8GHz/128GB MacBook Air (MQD32LL/A): $899, $... Read more
Save on Beats: $30-$80 off headphones, earpho...
Walmart has Beats by Dr. Dre on sale on their online store for $30-$80 off MSRP, depending on the item: – Powerbeats3 Wireless Earphones: $134, save $65 – BeatsX Earphones: $109, save $40 – Beats... Read more
Deals on clearance 15″ Apple MacBook Pros wit...
B&H Photo has clearance 2016 15″ MacBook Pros available for up to $800 off original MSRP. Shipping is free, and B&H charges NY & NJ sales tax only: – 15″ 2.7GHz Touch Bar MacBook Pro... Read more
Apple restocked Certified Refurbished 13″ Mac...
Apple has restocked a full line of Certified Refurbished 2017 13″ MacBook Airs starting at $849. An Apple one-year warranty is included with each MacBook, and shipping is free: – 13″ 1.8GHz/8GB/128GB... Read more
How to find the lowest prices on 2017 Apple M...
Apple has Certified Refurbished 13″ and 15″ 2017 MacBook Pros available for $200 to $420 off the cost of new models. Apple’s refurbished prices are the lowest available for each model from any... Read more

Jobs Board

*Apple* Solutions Consultant - Apple (United...
# Apple Solutions Consultant Job Number: 113384559 Brandon, Florida, United States Posted: 10-Jan-2018 Weekly Hours: 40.00 **Job Summary** Are you passionate about Read more
Security Engineering Coordinator, *Apple* R...
# Security Engineering Coordinator, Apple Retail Job Number: 113237456 Santa Clara Valley, California, United States Posted: 18-Jan-2018 Weekly Hours: 40.00 **Job Read more
*Apple* Data Center Site Selection and Strat...
# Apple Data Center Site Selection and Strategy Research Analyst Job Number: 83708609 Santa Clara Valley, California, United States Posted: 18-Jan-2018 Weekly Hours: Read more
Engineering Manager - *Apple* TV - Apple (U...
# Engineering Manager - Apple TV Job Number: 113305053 Santa Clara Valley, California, United States Posted: 05-Dec-2017 Weekly Hours: 40.00 **Job Summary** The Read more
AppleCare Support Engineer for *Apple* Medi...
# AppleCare Support Engineer for Apple Media Products Job Number: 113222855 Santa Clara Valley, California, United States Posted: 14-Nov-2017 Weekly Hours: 40.00 Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.