Fixed option to override 'state' property of a saved machine
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Jeff Parsons
parent
0f4402aa2a
commit
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7 changed files with 132 additions and 10 deletions
121
_posts/2016-02-17-saving-disks-and-machines.md
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_posts/2016-02-17-saving-disks-and-machines.md
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@ -0,0 +1,121 @@
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---
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layout: post
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title: "Saving Disks and Machines"
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date: 2016-02-17 14:00:00
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permalink: /blog/2016/02/17/
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---
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PCjs (v1.20.9) now offers some new, *much* easier ways to save disks and machines, thanks to the new
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[Save Disk](#saving-disks) and [Save Machine](#saving-machines) features. With one click, PCjs can now
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generate a single download containing everything you need to embed any of our IBM PC demos on your own
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web page.
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Saving Disks
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---
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Floppy disk images can now be saved to your desktop computer by simply clicking the **Save** button next
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to the floppy disk controls. Select the drive first, and then whatever diskette is shown as being "loaded"
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in that drive will be saved in your local machine's Downloads folder when you click **Save**.
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If you made any changes to that disk after it was loaded, those changes will be included, so if you want a pristine
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copy of the disk, click the **Load** button first. PCjs will ask you to confirm that you really want to reload the
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disk and discard any changes.
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Note that the disk *should* be downloaded as an **.img** file, which is nothing more than a sector-by-sector binary
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dump of the disk. For example, a 360Kb double-sided double-density (DSDD) disk contains 9 512-byte sectors on each
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of the 40 tracks on each of its 2 sides, so when you **Save** a 360Kb disk, the downloaded file should be exactly
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368,640 bytes large.
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The Mac OS X operating system can automatically mount most **.img** files (from disks created by DOS 2.0 or later).
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Older 1.x DOS disks, along with most non-DOS disks, do not have a BIOS Parameter Block (BPB) in the boot sector, so
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most modern operating systems won't recognize the disk format. Other operating systems, like Windows, may require
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third-party software in order to mount an **.img** file, and some third-party software may prefer a different extension,
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such as **.ima** or **.bin**.
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It's also recommended that make your **.img** files *read-only*, so that if you do mount them on your desktop
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computer, neither you nor the operating system will inadvertently modify the contents of the disk. On OS X, this is
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easily done with the **chmod** utility.
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For example, if you saved the disk named "PC-DOS 2.00 (Disk 1)", it should have been downloaded as "PCDOS200-DISK2.img"
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in your Downloads folder, so the OS X Terminal command `chmod -w PCDOS200-DISK2.img` will make it read-only, and
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`chmod +w PCDOS200-DISK2.img` will make it writable again.
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Saving Machines
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---
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Saving the entire state of any existing IBM PC machine is also possible with a single click. You can choose to save
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a machine in its initial state, or make changes to any of the machine's disks and then save it. All your changes should
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be preserved.
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Under the bottom-left corner of any IBM PC on the PCjs [website](http://www.pcjs.org/), you should now see a
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[**Save Machine**] link. When you click that link, PCjs will generate a large "blob" of JavaScript containing
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everything that machine needs to run, including:
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* The machine XML configuration file (eg, "machine.xml")
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* The machine XSL transformation file (eg, "components.xsl")
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* The machine CSS stylesheet file (eg, "components.css")
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* The machine state file (eg, "state.json")
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* The PCjs machine emulation script (eg, "pc.js")
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* Copies of all the disk images mounted by the machine
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Let's say you want to save the IBM PC on the PCjs [home page](http://www.pcjs.org/). When you click
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**Save Machine**, two things should happen:
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* A file will be downloaded ("pc.json")
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* A popup will appear with some markup to copy-and-paste
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The popup should provide the following information:
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Check your Downloads folder for "pc.json", copy it to your web server as "pc.js",
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and then add the following to your web page:
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<div id="ibm5150"></div>
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...
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<script type="text/javascript" src="pc.js"></script>
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<script type="text/javascript">embedPC("ibm5150","machine.xml","components.xsl");</script>
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The machine should appear where the <div> is located.
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Rename the downloaded file from **pc.json** to **pc.js**, copy it to your own web server, then create or edit
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a web page and insert the above text. If **pc.js** and your web page are in different folders, then you'll also
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need to change *src* to indicate the location of **pc.js**.
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Some notes:
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* PCjs asks the browser to name the downloaded file **pc.json** instead of **pc.js** because a file with a ".js"
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extension may cause the Chrome web browser to block the download. And not all browsers support named downloads;
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PCjs will attempt to open a new window/tab if that seems to be the case.
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* Your version of Chrome may also impose size limitations on the download. If nothing downloads, the machine may
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be too large for your browser, so try a different browser (eg, Firefox or Safari).
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* If you have modified any floppy disks mounted by the machine *or* any of the machine's hard disks, those
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modifications should be saved along with the machine.
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* Any floppy disks mounted during the lifetime of the machine will be added to the machine's state. So, for example,
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if you want your copy of the machine to include all the Windows 1.01 SDK disks, make sure you have loaded each disk
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once before clicking **Save Machine**.
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* Any floppy disks *not* mounted during the lifetime of the machine will be *removed* from the machine's list of
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available disks; we don't want machines running on other websites to be consuming our bandwidth.
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* The machine's current state, including memory and screen contents, are included as part of the saved
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machine state. So, even if the original machine always powers on from scratch, the *copied* machine will always
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resume at the point it was saved. This behavior, however, can be disabled by passing a *parms* object as the
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4th parameter to the *embedPC()* call, overriding the 'state' property:
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<script type="text/javascript">embedPC("ibm5150","machine.xml","components.xsl","{state:null}");</script>
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While the [PCjs Documentation](/docs/pcjs/) explains how to create a *new* machine, by writing your own machine
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XML file and manually copying all the other pieces, the new **Save Machine** feature is the best way to save
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any *existing* IBM PC and embed it on any other website.
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**WARNING**: While this feature is still "hot of the press," there will probably be some kinks to work out. Every
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browser seems to have its own idiosyncrasies in terms of what can be downloaded and/or how large it can be. It's
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also quite possible that certain machine features or modifications may not be properly preserved.
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If you're having trouble with a particular browser or a particular machine, be sure to
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[let me know](mailto:Jeff@pcjs.org), and then try another browser and/or machine.
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*[@jeffpar](http://twitter.com/jeffpar)*
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*February 17, 2016*
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@ -10,7 +10,8 @@
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<disk path="/disks/pc/games/microsoft/adventure/adventure-1981.json">Microsoft Adventure</disk>
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<disk path="/apps/pc/1981/visicalc/disk.json">VisiCalc</disk>
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</control>
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<control type="button" binding="loadDrive" padright="8px">Load</control>
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<control type="button" binding="loadDrive">Load</control>
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<control type="button" binding="saveDrive" padright="8px">Save</control>
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<control type="description" binding="descDisk" padright="8px"/>
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<control type="file" binding="mountDrive"/>
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</fdc>
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@ -1206,7 +1206,7 @@ ef.prototype={constructor:ef,value:function(){return this[this.id]},data:functio
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this.key)){try{window.localStorage.removeItem(d)}catch(e){}b.splice(c,1);c=0}}};function kr(a,b){a[a.id]={};b&&ff(a,"parms",b);a.A=!1}function lr(a){var b=!0;if(Ga()){var c=JSON.stringify(a[a.id]);Ia(a.key,c)||(Ca("Unable to store "+c.length+" bytes in browser local storage"),b=!1)}return b}function mr(a){var b=!0;try{a[a.id]=JSON.parse(a[a.id])}catch(c){Ca(c.message||c),b=!1}return b}function nr(a,b){return a[a.id][b]||null}function ff(a,b,c){try{a[a.id][b]=c}catch(d){}}
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function or(a,b,c){Ya.call(this,"Computer",a,or,67108864);this.ra.hc=!1;pr(this,b);this.da=Qo(this,"autoPower",a);this.R=0;this.wa=a.busWidth||a.buswidth;this.A=qr;this.W=null;this.P=this.ta=!1;this.za=Qo(this,"url")||"";this.Ba=(Math.random()+.1).toString(36).substr(2,12);this.C=rr(this);if(this.M=mb("CPU",this.id)){this.ma=mb("Debugger",this.id);this.ja=new Rb({id:this.re+".bus",buswidth:this.wa},this.M,this.ma);var d,e=kb(this.id);if((this.Wd=mb("Panel",this.id))&&this.Wd.Af)for(b=0;b<e.length;b++)d=
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e[b],d.Ua=this.Wd.Ua,d.U=this.Wd.U,d.Af=this.Wd.Af;for(b=0;b<e.length;b++)d=e[b],d.Jc&&d.Jc(this,this.ja,this.M,this.ma);b=null;d=a.resume;void 0!==d&&(1<d.length?b=this.Y=d:this.A=parseInt(d,10));var f;if(a=bb&&bb.state||Qo(this,"state")||(f=!0,a.state))b=this.ka=a,f||(this.P=!0,this.A=qr),this.A&&(this.X=new ef(this,sr),this.X.load()?b=null:delete this.X);!b&&this.A&&(f=null,this.C&&(f=Aa()+"/api/v1/user?req=load&user="+this.C+"&state="+jr(this,sr)),b=f)&&(this.P=!0);b?za(b,!0,null,this,this.vk):
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yb(this);this.xa.power||(this.da=!0);!c&&this.da&&tr(this,this.Xf)}else Ca("Unable to find CPU component")}hb(or);var sr="1.20.9",qr=0;h=or.prototype;h.df=function(){return this.Ba};function pr(a,b){if(!b){var c;if("object"==typeof resources&&(c=resources.parms))try{b=eval("("+c+")")}catch(d){Ca(d.message+" ("+c+")")}}a.ia=b}function Qo(a,b,c){var d=null;a.ia&&(d=a.ia[b]);null==d&&c&&(d=c[b]);null==d&&"object"==typeof resources&&resources[b]&&(d=b);return d}h.he=function(){return this.C||""};
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yb(this);this.xa.power||(this.da=!0);!c&&this.da&&tr(this,this.Xf)}else Ca("Unable to find CPU component")}hb(or);var sr="1.20.9",qr=0;h=or.prototype;h.df=function(){return this.Ba};function pr(a,b){if(!b){var c;if("object"==typeof resources&&(c=resources.parms))try{b=eval("("+c+")")}catch(d){Ca(d.message+" ("+c+")")}}a.ia=b}function Qo(a,b,c){var d;a.ia&&(d=a.ia[b]);void 0===d&&c&&(d=c[b]);void 0===d&&"object"==typeof resources&&resources[b]&&(d=b);return d}h.he=function(){return this.C||""};
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h.vk=function(a,b,c){c?(this.Y=null,this.P=!1,this.Ua("Unable to load machine state from server (error "+c+(b?": "+qa(b):"")+")")):(this.W=b,this.ta=!0);yb(this)};function tr(a,b,c){for(var d=kb(a.id),e=0;e<=d.length;e++){var f=e<d.length?d[e]:a;if(!zb(f)){zb(f,function(){tr(a,b,c)});return}}b.call(a,c)}
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function ur(a,b){var c=new ef(a,sr,"validate");if(c.load()&&mr(c)){var d=nr(c,"timestamp"),e=b?nr(b,"timestamp"):"unknown";d!=e&&(a.Ua("Machine state may be out-of-date\n("+d+" vs. "+e+")\nCheck your browser's local storage limits"),b||c.clear())}}
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h.Xf=function(a){void 0===a&&(a=this.A||(this.W?1:qr));if(!this.R){this.R++;var b=!1,c=!1;this.qa=!1;var d=this.X||new ef(this,sr);if(-1==a)b=!0;else if(a>qr){if(d.load(this.W)){this.O=new ef(this,sr,"failsafe");this.O.load()&&(vr(this,d),a=2,kr(this.O));ff(this.O,"timestamp",ta());lr(this.O);var e=this.A&&!this.P;if(1==a||Ea("Click OK to restore the previous PCjs machine state, or CANCEL to reset the machine.")){if(c=mr(d)){var f=nr(d,"code"),g=nr(d,"data");f&&("ok"==f?d.load(g):("error"==f&&"no machine state"!=
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@ -1025,7 +1025,7 @@ Td.prototype={constructor:Td,value:function(){return this[this.id]},data:functio
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this.key)){try{window.localStorage.removeItem(d)}catch(e){}b.splice(c,1);c=0}}};function Qm(a,b){a[a.id]={};b&&D(a,"parms",b);a.A=!1}function Rm(a){var b=!0;if(ta()){var c=JSON.stringify(a[a.id]);va(a.key,c)||(g("Unable to store "+c.length+" bytes in browser local storage"),b=!1)}return b}function Sm(a){var b=!0;try{a[a.id]=JSON.parse(a[a.id])}catch(c){g(c.message||c),b=!1}return b}function Tm(a,b){return a[a.id][b]||null}function D(a,b,c){try{a[a.id][b]=c}catch(d){}}
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function Um(a,b,c){Ha.call(this,"Computer",a,Um);this.ja.Qb=!1;Vm(this,b);this.S=Zl(this,"autoPower",a);this.F=0;this.ta=a.busWidth||a.buswidth;this.B=Wm;this.T=null;this.J=this.ha=!1;this.ka=Zl(this,"url")||"";this.na=(Math.random()+.1).toString(36).substr(2,12);this.D=Xm(this);if(this.A=Ua("CPU",this.id)){this.Ta=Ua("Debugger",this.id);this.oa=new qb({id:this.mf+".bus",buswidth:this.ta},this.A,this.Ta);var d,e=Sa(this.id);if((this.md=Ua("Panel",this.id))&&this.md.hg)for(b=0;b<e.length;b++)d=e[b],
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d.Ha=this.md.Ha,d.pc=this.md.pc,d.hg=this.md.hg;for(b=0;b<e.length;b++)d=e[b],d.nc&&d.nc(this,this.oa,this.A,this.Ta);b=null;d=a.resume;void 0!==d&&(1<d.length?b=this.N=d:this.B=parseInt(d,10));var k;if(a=Ka&&Ka.state||Zl(this,"state")||(k=!0,a.state))b=this.W=a,k||(this.J=!0,this.B=Wm),this.B&&(this.O=new Td(this,Ym),this.O.load()?b=null:delete this.O);!b&&this.B&&(k=null,this.D&&(k=qa()+"/api/v1/user?req=load&user="+this.D+"&state="+Pm(this,Ym)),b=k)&&(this.J=!0);b?pa(b,!0,null,this,this.qj):$a(this);
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this.pa.power||(this.S=!0);!c&&this.S&&Zm(this,this.bf)}else g("Unable to find CPU component")}Pa(Um);var Ym="1.20.9",Wm=0;f=Um.prototype;f.qe=function(){return this.na};function Vm(a,b){if(!b){var c;if("object"==typeof resources&&(c=resources.parms))try{b=eval("("+c+")")}catch(d){g(d.message+" ("+c+")")}}a.K=b}function Zl(a,b,c){var d=null;a.K&&(d=a.K[b]);null==d&&c&&(d=c[b]);null==d&&"object"==typeof resources&&resources[b]&&(d=b);return d}f.xd=function(){return this.D||""};
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this.pa.power||(this.S=!0);!c&&this.S&&Zm(this,this.bf)}else g("Unable to find CPU component")}Pa(Um);var Ym="1.20.9",Wm=0;f=Um.prototype;f.qe=function(){return this.na};function Vm(a,b){if(!b){var c;if("object"==typeof resources&&(c=resources.parms))try{b=eval("("+c+")")}catch(d){g(d.message+" ("+c+")")}}a.K=b}function Zl(a,b,c){var d;a.K&&(d=a.K[b]);void 0===d&&c&&(d=c[b]);void 0===d&&"object"==typeof resources&&resources[b]&&(d=b);return d}f.xd=function(){return this.D||""};
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f.qj=function(a,b,c){c?(this.N=null,this.J=!1,this.Ha("Unable to load machine state from server (error "+c+(b?": "+(String.prototype.trim?b.trim():b.replace(/^\s+|\s+$/g,"")):"")+")")):(this.T=b,this.ha=!0);$a(this)};function Zm(a,b,c){for(var d=Sa(a.id),e=0;e<=d.length;e++){var k=e<d.length?d[e]:a;if(!ab(k)){ab(k,function(){Zm(a,b,c)});return}}b.call(a,c)}
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function $m(a,b){var c=new Td(a,Ym,"validate");if(c.load()&&Sm(c)){var d=Tm(c,"timestamp"),e=b?Tm(b,"timestamp"):"unknown";d!=e&&(a.Ha("Machine state may be out-of-date\n("+d+" vs. "+e+")\nCheck your browser's local storage limits"),b||c.clear())}}
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f.bf=function(a){void 0===a&&(a=this.B||(this.T?1:Wm));if(!this.F){this.F++;var b=!1,c=!1;this.da=!1;var d=this.O||new Td(this,Ym);if(-1==a)b=!0;else if(a>Wm){if(d.load(this.T)){this.H=new Td(this,Ym,"failsafe");this.H.load()&&(an(this,d),a=2,Qm(this.H));D(this.H,"timestamp",la());Rm(this.H);var e=this.B&&!this.J;if(1==a||ra("Click OK to restore the previous PCjs machine state, or CANCEL to reset the machine.")){if(c=Sm(d)){var k=Tm(d,"code"),l=Tm(d,"data");k&&("ok"==k?d.load(l):("error"==k&&"no machine state"!=
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@ -372,18 +372,18 @@ Computer.prototype.setMachineParms = function(parmsMachine)
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*
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* @param {string} sParm
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* @param {Object} [parmsComponent]
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* @return {string|null}
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* @return {string|undefined}
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*/
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Computer.prototype.getMachineParm = function(sParm, parmsComponent)
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{
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var value = null;
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var value;
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if (this.parmsMachine) {
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value = this.parmsMachine[sParm];
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}
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if (value == null && parmsComponent) {
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if (value === undefined && parmsComponent) {
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value = parmsComponent[sParm];
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}
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if (value == null && typeof resources == 'object' && resources[sParm]) {
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if (value === undefined && typeof resources == 'object' && resources[sParm]) {
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value = sParm;
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}
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return value;
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@ -55,7 +55,7 @@ function savePC(idMachine, sPCJSFile)
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var sState = cmp.powerOff(true);
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var sParms = cmp.saveMachineParms();
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if (!sPCJSFile) {
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if (MAXDEBUG) {
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if (DEBUG) {
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sPCJSFile = "/tmp/pcjs/" + (XMLVERSION || APPVERSION) + "/pc.js"
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} else {
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sPCJSFile = "/versions/pcjs/" + (XMLVERSION || APPVERSION) + "/pc" + (dbg? "-dbg" : "") + ".js";
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@ -209,7 +209,7 @@ function downloadPC(sURL, sCSS, nErrorCode, aMachineInfo)
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}
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var link = document.createElement('a');
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if (typeof link.download == 'string') {
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if (!DEBUG && typeof link.download == 'string') {
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link.href = uri;
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link.download = sScript + ".json";
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document.body.appendChild(link); // Firefox requires the link to be in the body (?)
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@ -1206,7 +1206,7 @@ ef.prototype={constructor:ef,value:function(){return this[this.id]},data:functio
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this.key)){try{window.localStorage.removeItem(d)}catch(e){}b.splice(c,1);c=0}}};function kr(a,b){a[a.id]={};b&&ff(a,"parms",b);a.A=!1}function lr(a){var b=!0;if(Ga()){var c=JSON.stringify(a[a.id]);Ia(a.key,c)||(Ca("Unable to store "+c.length+" bytes in browser local storage"),b=!1)}return b}function mr(a){var b=!0;try{a[a.id]=JSON.parse(a[a.id])}catch(c){Ca(c.message||c),b=!1}return b}function nr(a,b){return a[a.id][b]||null}function ff(a,b,c){try{a[a.id][b]=c}catch(d){}}
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function or(a,b,c){Ya.call(this,"Computer",a,or,67108864);this.ra.hc=!1;pr(this,b);this.da=Qo(this,"autoPower",a);this.R=0;this.wa=a.busWidth||a.buswidth;this.A=qr;this.W=null;this.P=this.ta=!1;this.za=Qo(this,"url")||"";this.Ba=(Math.random()+.1).toString(36).substr(2,12);this.C=rr(this);if(this.M=mb("CPU",this.id)){this.ma=mb("Debugger",this.id);this.ja=new Rb({id:this.re+".bus",buswidth:this.wa},this.M,this.ma);var d,e=kb(this.id);if((this.Wd=mb("Panel",this.id))&&this.Wd.Af)for(b=0;b<e.length;b++)d=
|
||||
e[b],d.Ua=this.Wd.Ua,d.U=this.Wd.U,d.Af=this.Wd.Af;for(b=0;b<e.length;b++)d=e[b],d.Jc&&d.Jc(this,this.ja,this.M,this.ma);b=null;d=a.resume;void 0!==d&&(1<d.length?b=this.Y=d:this.A=parseInt(d,10));var f;if(a=bb&&bb.state||Qo(this,"state")||(f=!0,a.state))b=this.ka=a,f||(this.P=!0,this.A=qr),this.A&&(this.X=new ef(this,sr),this.X.load()?b=null:delete this.X);!b&&this.A&&(f=null,this.C&&(f=Aa()+"/api/v1/user?req=load&user="+this.C+"&state="+jr(this,sr)),b=f)&&(this.P=!0);b?za(b,!0,null,this,this.vk):
|
||||
yb(this);this.xa.power||(this.da=!0);!c&&this.da&&tr(this,this.Xf)}else Ca("Unable to find CPU component")}hb(or);var sr="1.20.9",qr=0;h=or.prototype;h.df=function(){return this.Ba};function pr(a,b){if(!b){var c;if("object"==typeof resources&&(c=resources.parms))try{b=eval("("+c+")")}catch(d){Ca(d.message+" ("+c+")")}}a.ia=b}function Qo(a,b,c){var d=null;a.ia&&(d=a.ia[b]);null==d&&c&&(d=c[b]);null==d&&"object"==typeof resources&&resources[b]&&(d=b);return d}h.he=function(){return this.C||""};
|
||||
yb(this);this.xa.power||(this.da=!0);!c&&this.da&&tr(this,this.Xf)}else Ca("Unable to find CPU component")}hb(or);var sr="1.20.9",qr=0;h=or.prototype;h.df=function(){return this.Ba};function pr(a,b){if(!b){var c;if("object"==typeof resources&&(c=resources.parms))try{b=eval("("+c+")")}catch(d){Ca(d.message+" ("+c+")")}}a.ia=b}function Qo(a,b,c){var d;a.ia&&(d=a.ia[b]);void 0===d&&c&&(d=c[b]);void 0===d&&"object"==typeof resources&&resources[b]&&(d=b);return d}h.he=function(){return this.C||""};
|
||||
h.vk=function(a,b,c){c?(this.Y=null,this.P=!1,this.Ua("Unable to load machine state from server (error "+c+(b?": "+qa(b):"")+")")):(this.W=b,this.ta=!0);yb(this)};function tr(a,b,c){for(var d=kb(a.id),e=0;e<=d.length;e++){var f=e<d.length?d[e]:a;if(!zb(f)){zb(f,function(){tr(a,b,c)});return}}b.call(a,c)}
|
||||
function ur(a,b){var c=new ef(a,sr,"validate");if(c.load()&&mr(c)){var d=nr(c,"timestamp"),e=b?nr(b,"timestamp"):"unknown";d!=e&&(a.Ua("Machine state may be out-of-date\n("+d+" vs. "+e+")\nCheck your browser's local storage limits"),b||c.clear())}}
|
||||
h.Xf=function(a){void 0===a&&(a=this.A||(this.W?1:qr));if(!this.R){this.R++;var b=!1,c=!1;this.qa=!1;var d=this.X||new ef(this,sr);if(-1==a)b=!0;else if(a>qr){if(d.load(this.W)){this.O=new ef(this,sr,"failsafe");this.O.load()&&(vr(this,d),a=2,kr(this.O));ff(this.O,"timestamp",ta());lr(this.O);var e=this.A&&!this.P;if(1==a||Ea("Click OK to restore the previous PCjs machine state, or CANCEL to reset the machine.")){if(c=mr(d)){var f=nr(d,"code"),g=nr(d,"data");f&&("ok"==f?d.load(g):("error"==f&&"no machine state"!=
|
||||
|
|
|
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Reference in a new issue