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<title> Emulated Hardware Reference - Mini vMac </title>
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<i> <a href="https://www.gryphel.com/index.html">www.gryphel.com</a>/c/<a href="index.html">minivmac</a>/hardware
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<h3 align=center>
Mini vMac
</h3>
<h3 align=center>
Emulated Hardware Reference
</h3>
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<p> <b> * * * to be updated * * * </b> </p>
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<p> <b> Contents </b> </p>
<blockquote>
<p> <a href="hardware.html#rom">ROM</a> </p>
<p> <a href="hardware.html#power_switch">Power Switch</a> </p>
<p> <a href="hardware.html#floppy_drives">Floppy Drives</a> </p>
<p> <a href="hardware.html#processor">Processor</a> </p>
<p> <a href="hardware.html#ram">RAM</a> </p>
<p> <a href="hardware.html#screen">Screen</a> </p>
<p> <a href="hardware.html#keyboard">Keyboard</a> </p>
<p> <a href="hardware.html#mouse">Mouse</a> </p>
<p> <a href="hardware.html#sound">Sound</a> </p>
<p> <a href="hardware.html#vertical_retrace">Vertical Retrace</a> </p>
<p> <a href="hardware.html#rtc">Real Time Clock</a> </p>
<p> <a href="hardware.html#pram">Parameter RAM</a> </p>
<p> <a href="hardware.html#scsi">SCSI</a> </p>
<p> <a href="hardware.html#serial">Serial Ports</a> </p>
<p> <a href="hardware.html#interrupt">Interrupt Button</a> </p>
<p> <a href="hardware.html#reset">Reset Button</a> </p>
</blockquote>
<p> <a name="rom"> <b> ROM </b> </a> </p>
<p> The ROM (“Read Only Memory”) contains information needed for
the Macintosh Plus to function, and the emulation of the
Macintosh Plus also needs this information. A program such as
“<a href="extras/copyroms/index.html">CopyRoms</a>”,
when run on a real Macintosh Plus, will save
this information to a file, which can then be transferred
to the computer on which you want to run Mini vMac. Note that
the ROM image file is copyright Apple Computer, and may not
be redistributed. So to legally use Mini vMac, you need to
own a real Macintosh Plus. If you don’t have a Macintosh Plus,
you could check the
“<a href="https://www.gryphel.com/c/buymac/index.html">Where to buy an old Macintosh</a>”
page. </p>
<p>
When Mini vMac launches, it will look for a ROM image file in a number
of possible locations.
If it does not find the ROM image, it will wait
for you to tell it where it is. You can drag the icon of the file onto
to the Mini vMac window. Or, in the Macintosh or Windows
versions, you can choose the “Open Disk Image...” command
from the “File”
<a href="control.html#menu_commands">menu</a>,
or the ‘O’ command from the
<a href="control.html#control_mode">Control Mode</a> to bring
up the bring up the standard dialog. Once you have told Mini vMac
where the ROM image is, booting will resume.
</p>
<p>
Before giving up and asking you where the ROM image file is,
the first location Mini vMac will look for it is in the folder
containing the Mini
vMac application, with the name “vMac.ROM”.
In recent versions of OS X, this will not work by
default, because of “Path Randomization” misfeature added in
macOS Sierra (10.12), and also because of Sandboxing, when that is
enabled.
</p>
<p> The ROM image file may also be placed elsewhere, with an alias
(named “vMac.ROM”) to it placed in Mini vMac’s folder.
"Alias" is the term used for Macintosh. On Windows you use
a "“Shortcut”" file. (It must be “vMac.ROM”,
not “Shortcut to vMac.ROM”. Actually, the file is really named
“vMac.ROM.lnk” internally, but what you see is “vMac.ROM”.)
And in the X versions you use a symlink, or "symbolic link". </p>
<p> An exception to the above is that in the Mac OS X version,
if you create a folder called “mnvm_dat”
inside
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