Mac Os Emulator Online




Welcome to Darek Mihocka's Emulators web site. Since 1986 our team has pioneered the development Atari 8-bit, Atari ST, and Apple Macintosh emulators for Intel based PCs, published conference papers on portable emulation, and contributed to third party emulators such as Bochs and Hatari.

2010-2019 was a Decade Of Disruption, with fundamental changes to human society not seen in a century. With climate collapse and global pandemics changing our world forever, we humans must embrace the switch to electric vehicles, plant-based diets, renewable energy, and more efficient electronics to reduce our overall energy consumption.

This is why we are focusing our development efforts on the new expanding universe of ARM64 processors and devices - the computing platform for this new 2020's:
Decade Of Transformation.

Celebrating 40 years of the Atari desktop computing at VCF 2019

Thank you to everyone who attended the Vintage Computer Festival 2019 in Seattle, March 23-24 2019 at the Living Computers Museum. Emulators.com exhibited our original 1979-1993 era Atari 800, XL, XE, TT, and Falcon computers as well exhibiting the MIST FPGA re-implementation of the Atari TT, and making the first public demos of Xformer 10 and HATARI emulators compiled for long battery-life ARM64 laptops such as Lenovo Yoga.

Run hundreds of Atari 800 and 130XE games at once! Click the video above for a brief intro demo, or the video below for detailed 13-minute walkthrough of every... single... cool... new... holy... cow... I... didn't... know... I... needed.. this... how... have... I... lived... without... it... feature!

Xformer 10 for Windows 10 is now available!
Download Xformer 10 for Windows 10

Download Visual Studio 2017 C++ Runtime for x86/x64
(prerequisite for running Xformer 10 on Intel PCs)

Download Visual Studio 2017 C++ Runtime for ARM64
(prerequisite for running Xformer 10 on ARM64 devices)

Read our blog posting on ARM64...
Windows 10 Pro on ARM64

HATARI for ARM64 at VCF 2019:
The emulators.com team is proud to demonstrate and release the world's first native ARM64 port of Hatari (Atari ST/STe/TT emulator) for Windows 10 on ARM64. Visit our booth at the 2019 Vintage Computer Festival Pacific Northwest in Seattle to celebrate 40 Years Of Atari Desktop Computers. (More)

XFORMER 10 at VCF 2019:
The emulators.com team is bringing our vintage Atari 800, 800XL, and 130XE hardware to the 2019 Vintage Computer Festival Pacific Northwest in Seattle to celebrate 40 Years Of Atari Desktop Computers. (More)

Windows 10 arrives for ARM64:
ARM chips are not for toy devices anymore! Windows 10 is now shipping on ARM64 based tablets and laptops which feature long battery life, x86 compatibility, and fast 64-bit performance.
(More)

Haswell's great leap forward:
The Intel Haswell processor has arrived! Darek looks at what makes this the most significant improvement to x86 in many years.
(More)

The year of Smaller, Thinner, Faster: A look back a 2011.
From AVX to Ultrabooks to Bochs 2.5, Darek looks back at 2011's interesting events and gadgets.
(More)
MICROCODE SIMULATION:
Darek's latest paper on high-speed simulation techniques, presented at the 4th AMAS-BT workshop at ISCA 2011 in San Jose, California.
(Read Paper as PDF)

Long Live PowerPC G5:
A look back at what is still a very useful processor.
(More)
ISCA 2010:
An overview of the 2010 ISCA conference held in St. Malo France.
(More)
Bochs 2.4.5:
Learn more about how to build it for Windows, Mac OS X, and Linux:
(More)
(Download .EXE)
(Download sources)

The easy upgrade from Windows XP to Windows 7 without re-installing:
(More)

Travel back in time on YouTube to see these low budget Emulators.com classic demo videos:

Gemulator promo video from 1992: Part 1Part 2Part 3

SoftMac 2000 instructional videos from 2001: #1#2#3#4#5

A little bit more history about us. More than five years before Apple made the switch to Intel in 2006, our SoftMac emulator was already running unmodified Mac OS on Dell, Sony, and Gateway PCs in the late 1990's. We proved it was possible.

On August 13th 2007, we started a public beta of the 9th generation of Gemulator and SoftMac, bringing Windows Vista compatibility and 64-bit Core 2 support to our flagship products. The final Gemulator 9.0 release was made on December 1 2008.

Gemulator 9.0 is available as open source.
Download GEMULATOR 9.0

Emulators.com has contributed code and optimization ideas to numerous open source emulation projects including vMac, Basilisk II, and the Bochs x86 emulation project, the gold standard of PC emulators, now supporting 64-bit Linux and Windows emulation!

The authors of Bochs, Gemulator, and SoftMac presented the case for emulation on June 21 2008 at the AMAS-BT workshop, part of the ISCA 2008 computer architecture conference in Beijing, China. View the Virtualization Without Direct Executionpaper and slides.

Follow-up papers were presented at workshops at the 2010 CGO conference in Toronto, Canada, explaining improved Overflow Detection (paper and slides), and at the 2011 ISCA conference in San Jose on Fast Microcode Simulation (paper).

Got an older PC? No problem! Our SOFTMAC 2000 and FUSION PC 3.0 emulators are best suited for use with 486 and Pentium based MS-DOS and Windows 95 systems. Download them and bring new life to your old PC. These emulators use under 1 megabyte of disk space and can be booted from floppy disk, CD-ROM, or the network without requiring prior installation to the hard disk.

SoftMac 2000 CD-ROMs including Fusion PC and free Mac software are available free of charge. Send a self-addressed stamped disk mailer to receive your SoftMac 2000 CD-ROM.

Our site also features the free Xformer Atari 400/800 emulator, and Gemulator, the original Atari ST emulator.

NO EXECUTE!
The fundamental design of the microprocessors that power Windows, Mac OS X, and Linux is flawed. 20 years of security promises have fallen flat, leading to consumer frustration and a malware epidemic. How can emulation fix this mess?

Darek's Secrets
Tips for getting the most from your Apple Mac, Windows PC, or netbook.
(Latest)(Archives)

Pentium 4: In Depth
Writing efficient code means understanding the pitfalls of the hardware.

Benchmarks
Find out which PCs our products run on and how fast they run. Now with Intel Core 2 benchmark results.

Free Downloads
Official releases of SoftMac, Fusion PC, Gemulator, Gemulator Explorer, and Xformer.

News and Announcements
Latest product announcements, emulation news, and show updates.

Emulators Inc.
Our mission and contact information.

Frequently Asked Questions
Need help getting started with our products? Want a better understanding of emulation? Your questions are answered here.


Mac disks on the PC
Do you need to read a Macintosh or Atari ST disk on your PC to copy over a few files? All you need is our free Gemulator Explorer utility!

SoftMac Info
Find out more about SoftMac - the Apple Macintosh emulator for Windows. Check the hardware requirements for your PC, download SoftMac, and learn how to install it and run it.

Windows XP Secrets
We've got some great reasons to upgrade to Windows XP. And lots of handy tips!

Pictured above: the CALAMUS SL desktop publishing program for the Atari ST, running in a virtual Atari ST desktop on Microsoft Windows using the Gemulator 2000 Atari ST emulator.


In the summer of 1992 we launched the world's first Atari ST emulator - GEMULATOR.

Originally designed for 486 processors running MS-DOS, Gemulator 2000 emulator offers fast Atari ST and STE emulation on Windows 95, 98, 2000, and XP.

Atari ST emulation page
Run TOS, GEM, Calamus, Pagestream, GFA Basic, and other Atari ST and Macintosh Plus software on your PC. Find out how with Gemulator 2000.

Pictured above: two virtual Atari 800 windows running on Microsoft Windows using the Xformer 2000 Atari 8-bit emulator. Each virtual Atari 800 is running a completely different program - one is running Atari BASIC, the other is running the well known game STAR RAIDERS.


We released the world's first Atari 400/800 emulator - XFORMER - in January 1987.

Today we offer the free Xformer 2000 emulator which runs Atari BASIC programs and Atari 8-bit video games on Windows 95, 98, 2000, and XP.

Atari 8-bit emulation page
Running Atari 8-bit software on your PC has never been easier. Find out how with Xformer 2000.

Copyright © 1996-2020 Emulators, 14150 NE 20th Street, Suite 302, Bellevue, WA 98007, U.S.A.
Questions and comments can be emailed to
emulators@emulators.com
Or message via
Facebook at https://www.facebook.com/darekmihocka/
We try to respond to within 48 hours.

Apple, Mac OS, Macbook, and Macintosh are registered trademarks of Apple Computer, Inc. Atari is a registered trademark of Atari U.S. Corporation. Athlon, Athlon XP, Opteron, and Phenom are registered trademarks of AMD. Microsoft, Windows, Windows NT, Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10, Visual Studio, .NET, and/or other Microsoft products referenced herein are either trademarks or registered trademarks of Microsoft. Intel, Pentium, Core 2, Core i7, and Atom are registered trademarks of Intel. PowerPC is a trademark of IBM. Additional company and product names may be trademarks or registered trademarks of the individual companies and are respectfully acknowledged.

PCE/macplus is a classic Macintosh emulator. It emulates a Macintosh 128K, Macintosh 512k, Macintosh 512ke, Macintosh Plus, Macintosh SE or a Macintosh Classic. WebMSX - The online MSX emulator. Play MSX2+ games in your browser, phone or tablet! This suite of software development tools can be used directly on a Mac OS system or through an iOS Emulator that can be downloaded for your PC. The way XCode is laid out is intended for it to make the end-user easily understand any changes that are made to the code alongside any conflicts or issues. OnWorks Pear OS online, a MAC OS emulator with an online ease-of-use distribution that has a custom user interface with a Mac OS X-style dockbar, and out-of-the-box support for many popular multimedia codecs. With LambdaTest you can perform real time live interacting testing of your website or webapp on real MacOS Mojave machines running real Chrome, Safari, Opera, and Firefox browsers. You can also debug the source code of your website while performing macOS Mojave compatibility with LambdaTest.

Darek's Secrets - NO EXECUTE! - Mac OS 8 Installation Guide

Windows runs Mac OS... and likes it!

Cross-platform compatibility between Mac and Windows is not a new concept. Since 1984, Macintosh and PC users have grappled with the problems of reading each other's disks, loading each other's files, and running each other's applications.

Utilities do exist to read Macintosh files on the PC. We even provide such a free utility to read Mac disks on a PC, which is handy for reading a Mac formatted disk that contains a common file such as a Word document, Excel spreadsheet, Photoshop document, or a GIF or JPG or HTML file.

Some popular commercial utilities even go so far as to convert the file format for you, say from Mac Word 5.1 format to Word 2000 format. But the act of conversion may destroy the font information and change the document layout. This type of utility is a bad idea if you plan to 'round trip' the document back to a real Macintosh. It is a one-way operation at best.

Other tools, costing up to hundreds of dollars, do exist to allow Mac and PC computers to network together. But they do not solve the 'round trip' problem of moving a Mac file from a Mac application to a Windows application and then back to the Mac application.

None of these simple file copy utilities are really a good solution for the problems faced by real world Macintosh and Windows users:

  1. The round trip problem - Create a file on a Macintosh. Copy it to a PC and edit it in Windows. Then copy it back to a Macintosh and editing it using the original application. Each time the file may lose font, formatting, and layout information and may require tedious editing to fix to get it back to the way it was originally.

  2. The non-standard file format problem - Some file formats simply can't be converted from Mac to PC. The Mac applications that created the document do not exist for the PC, or the Windows version of the application lacks the ability to do the conversion.

  3. The custom written software problem - Many schools have invested thousands of dollars and years of time in developing customized educational software. While it may be inexpensive to replace the old Macintosh computers with PCs, it is not a trivial matter to rewrite millions of lines of computer code or to purchase thousands of dollars of new software which may not be able to read the old files.

  4. The look-and-feel problem - While many Macintosh applications do have Windows equivalents, most Macintosh users prefer the look and feel of the Mac OS and the way that the applications look and behave on a Mac. What Mac Word user really wants to use Word 2000 or Word XP?

We have a better solution. If you love your Macintosh software and would prefer to use Macintosh applications over Windows applications, but you either have to use a PC or can't resist the low cost of PCs, why not simply use the PC to run the Macintosh software? What a simple idea!

Our solution, since we developed it in 1997, is to turn a PC into a Macintosh clone, and to run Mac OS and Macintosh applications directly on the PC. You benefit from the lower cost and faster speed of the PC, and still keep the use of your legacy Macintosh applications.

Not only does this provide you the easy ability to copy files back and forth between Mac and PC, but it solves the round trip problem, it solves the non-standard file format problem, it solves the custom written software problem, and it solves the look-and-feel problem. Because with emulation, you don't stop using your original Macintosh software and you are not required to purchase additional Windows applications. All you need is a PC, one of our emulators, and the Mac software that you already have.

Using aMacintosh emulator, your PC can:

  • Run the Mac OS on x86 processors - run Mac OS on Intel and AMD processors, and run Mac OS and Windows at the same time.

  • Read Macintosh disks - read your Macintosh floppy disks, CD-ROMs, Iomega ZIP disks and other Mac disks directly.

  • Run most Macintosh programs - our current emulators run about 90% of all System 6, System 7, and Mac OS 8 compatible Macintosh software.

  • Have faster speed and larger memory - run Macintosh applications at close to the full clock speed of your PC with up to a gigabyte of memory.

Our products have been seen on television's Digital Desk show, in Japan's Mac Power magazine, at Macworld Expo San Francisco, Macworld Expo Tokyo, CeBIT Hannover, COMDEX Las Vegas, and numerous other computer shows around the world.

Emulation is a great way for a PC to be more Mac friendly in a mixed Mac/PC environment. And it is a great way to replace an older Macintosh computer with a fast inexpensive PC while retaining backward compatibility with the older machine's software.


SOFTMAC - The intelligent solution to Macintosh - Windows compatibility

A solution for every PC and every budget. Whether your PC is running MS-DOS, Windows 95, or Windows XP, we offer a variety of Mac emulation tools, utilities, and software bundles to help you read and run Mac files on your PC. You may download our tools free of charge for home and personal use.

SoftMac XP Classic Edition, or simply SoftMac Classic, is the free Macintosh emulator for Windows, featuring 68000, 68030, and 68040 emulation in a single emulator and support for emulating Mac Classic, Mac II, and Mac Quadra computers. It supports all versions of Mac OS from the original 1.1g through System 6, System 7, Mac OS 7.5 and 7.6, and Mac OS 8.0 and 8.1. For use with Windows 95, Windows 98, Windows 2000, Windows NT 4, Windows Me, and of course, Windows XP.

SoftMac XP Xpress Edition, or simply SoftMac Xpress, is our most optimized Macintosh emulator, delivering 30% to 100% more speed than past releases of SoftMac when used with Windows XP on an Intel Pentium 4 processor, and featuring two-way drag-and-drop file copy support between Mac and PC disk volumes.

Download SoftMac XP - get both Classic Edition and Xpress Edition right now!
SoftMac Online Documentation - instructions for installing SoftMac. Print and read carefully!
SoftMac Online Tutorial
- shows you how to install Mac OS 8 and Macintosh applications. Print and read carefully!

All releases of SoftMac will boot Mac OS 8.1 in under 15 seconds on a typical Windows PC. By being able to emulate different types of Macintosh computers, SoftMac supports both '32-bit clean' and '32-bit dirty' Macintosh applications, and runs all 68K compatible versions of Mac OS (including System 7, System 6, and earlier) up to and including Mac OS 8.1.

The PowerPC processor is not emulated at this time by current releases of SoftMac, so Mac OS 8.5, 8.6, 9.0 and X are not supported since those versions of Mac OS require the PowerPC processor. PowerPC native applications are also not supported at this time.

A PC running MS-DOS cannot run SoftMac since SoftMac is designed for use on Windows only. For MS-DOS users we offer a free product called Fusion PC 3.0. It features fast 68040 emulation with an extremely small disk footprint. It is recommended for use on older 486 and Pentium systems running MS-DOS, or Windows 95/98 MS-DOS Prompt windows. Fusion PC 3.0 runs System 7.0 and 7.1, as well as Mac OS version 7.5, 7.6, 8.0, and 8.1.

Download Fusion PC 3.0 - setup files and documentation

All of our emulators run Mac software very quickly, typically delivering 50% to 70% of the clock speed in emulation. In other words, a 500 MHz PC running Windows 98 can emulate the equivalent of a 300 MHz Macintosh Quadra running Mac OS 8. Your results will vary depending on the exact type of PC you are using, the amount of RAM present, the version of Windows being used, video drivers, etc. For a good explanation on exactly what type of PC to use and how fast your results can be, see our Hardware Requirements and Benchmarks page.

IMPORTANT: All versions of SoftMac and Fusion PC require that you provide a valid Macintosh ROM BIOS (which all Macintosh computers use to start booting) and a valid Mac OS startup disk. Without these two items, and emulator will not boot or work, just as a real Macintosh computer cannot work without these items. You should download the free SoftMac XP or Fusion PC release to verify that you have the necessary ROM BIOS and Mac OS before purchasing a more advanced SoftMac release.

All users of Mac emulators fall into one of 3 categories. You should determine exactly which of the 3 categories applies to you, and this will determine whether you need to purchase a ROM card and/or ROMs, or whether you can use SoftMac entirely without any additional hardware. The 3 categories are:

  • You do not currently own a Macintosh computer of any kind. You will have to purchase our ROM card and a set of Macintosh ROMs and use that hardware inside your PC. You will likely also need to purchase Mac OS and other Macintosh software.

  • You do own a Macintosh computer, but one that is not functioning. You will need to purchase our ROM card and you will have the option to then install your computer's ROMs into the ROM card. In effect, transferring the functionality of your Macintosh computer into your PC. Only specific Macintosh ROMs are supported by the ROM card, so please consult our Macintosh ROM Chart to verify that you have the correct ROMs.

  • You do own a Macintosh computer that is functioning. You may be able to simply create a ROM image of your Macintosh's BIOS by running a small utility on your Macintosh. Again, please consult the Macintosh ROM Chart to verify that your ROMs are supported as ROM images. SoftMac currently supports over 30 different Macintosh ROM BIOS versions that are used in dozens of different models of Macintosh computers and we are adding support for new BIOS versions every month.

On April 20 2002 we released the SoftMac XP version 8.20 Suite CD-ROM. This latest release improves Windows XP support and Windows XP optimizations which deliver up to 100% faster speed than previous SoftMac 2000 releases. Two Windows XP compatible releases of SoftMac are included - SoftMac Classic which minimizes memory usage and is better suited for older Windows 95 based PCs, and SoftMac Xpress which delivers faster speed and is optimized for Pentium 4 and Athlon processors. Both version include a more intuitive user interface over SoftMac 2000.

The SoftMac XP Suite comes with some additional software, including the Fusion PC 3.0 Apple Macintosh emulator for MS-DOS, the Gemulator Atari ST emulator for Windows, and easier to use file copy utilities which simply copying files between Mac and PC disk volumes. We also offer additional third party Macintosh software such as Mac OS 8 and Claris Works, shareware software for the Mac, as well as Macintosh ROMs for use with SoftMac XP and other Macintosh emulators.

Attention! At this time (the year 2008) the SoftMac XP Suite is no longer sold online or through dealers. However, we are liquidating our unsold inventory of SoftMac CDs, unopened Mac OS 8 packages (Mac setup CD-ROM and/or Mac floppy disks), the shareware CD, and other items. .

Some quick facts about the latest SoftMac XP release:

Mac Os Catalina Emulator Online

  • supports Windows XP, Windows 2000, Windows Me, Windows 98, Windows NT 4.0, and Windows 95

  • compatible with all 486, Pentium, Celeron, AMD K6, Duron, and Athlon processors

  • 30% to 100% faster performance than previous SoftMac 2000 releases

  • emulates 68000, 68010, 68020, 68030, and 68040 processors

  • emulates 68881/68882/68040 floating point co-processors

  • emulates Mac Classic, Macintosh II, Macintosh LC, and Macintosh Quadra computers

  • runs System 6, System 7, and Mac OS 8, including Mac OS 8.1 and Mac OS 7.6

  • support for emulating 1 gigabyte (1024 megabytes) of Macintosh memory using an efficient swap file

  • multiple CD-ROM and DVD-ROM support - mount up to 9 CD-ROM devices at once

  • direct reading of Apple Macintosh floppy disks, CD-ROMs, hard drives, LS-120 and Iomega ZIP disks

  • disk image support allows mounting of SCSI hard disk and CD-ROM disk image files

  • easy drag-and-drop file copy support between Mac and PC disks

  • high resolution graphics supporting up to 1900x1080 color modes

  • support for editing and switching between 16 custom configurations

  • 'Hibernate' command - quickly saves Macintosh session to hard disk

  • built-in links to useful web sites and online help

As with most emulators and as explained above, SoftMac requires the ROM BIOS from a Macintosh computer in order to properly work. This is both a legal and technical requirement. If you own a functioning 68K based Macintosh computer, you can run a ROM dumping utility (which we supply) on your Macintosh and save its ROM BIOS to a disk file. That ROM file can then be copied to your PC and used with SoftMac and in many cases also used with our Fusion PC 3.0 emulator. The directions for doing this, as well as the ROM dump utility itself are on our SoftMac Online Documentation page. Please check the ROM chart below to make sure you have the necessary model of Macintosh to create the ROM image with. If your ROMs are listed as supported, congratulations, you can skip the rest of this page!

If you do not have a working Macintosh computer or do not have the necessary model of Macintosh computer, you must use ROM card and plug in real Macintosh ROMs into the card which then plugs into your PC. The ROM card which we manufacture has 8 ROM sockets which allows you to plug in two or more sets of Macintosh ROMs at once. This gives you the ability to run SoftMac and emulate multiple Macintosh computers at the same time, each running from a different ROM on the ROM card.

If you purchase our ROM card, you have the option to have us pre-install a set of Mac OS 8 compatible Macintosh ROMs on the card. If you wish to save some money and purchase just the ROM card without pre-installed ROMs, or you are an existing customer with a ROM card already installed, you can add your own Macintosh ROMs to the ROM card. You have several ROMs to choose from depending on what kind of Macintosh you wish to emulate and the kind of Macintosh software you wish to run:

  • For running older 68000 software (typically old Macintosh Plus or Macintosh SE software) you will want to use 128K Macintosh Plus ROMs. These can run System 6, System 7, and System 7.5.5, and do support reading high density 1.44M floppy disks and other Macintosh disks. These ROMs easily plug out of any Macintosh Plus computer because they are always socketed.

  • The first generation of color Macintosh ROMs are the original Macintosh II series (II, IIx, IIcx, and SE/30). These ROMs support color and are great for running System 7 and System 7.5. They are relatively inexpensive and can be plugged out of most Macintosh II computers because they are usually socketed (except in the IIcx). These ROMs however do not run Mac OS 8 because they are not 32-bit clean and support at most 8 megabytes of memory, limiting their usefulness.

  • The second generation of Macintosh II ROMs are the 512K, 1M, and 2M ROMs found in the Macintosh IIci, IIsi, LC series, Centris series, and Quadra series computers. These ROMs are 32-bit clean, meaning they support up to 1024 megabytes of Macintosh memory, they run System 7, 7.5, as well as Mac OS 7.6, 8.0, and 8.1, and are generally much faster and less buggy than the original Macintosh II ROMs. These are the ideal ROMs to run with SoftMac and are the type of ROMs that we install with our ROM cards.

The ROM card can accept almost all types of Macintosh ROMs manufactured between about 1984 and 1992, covering everything from the Mac 128 to the higher end Mac IIci and LC models. Although the card cannot physically accept 1M or larger ROMs due to the shape of those ROM chips, the 512K IIci and LC ROMs work just as well and do support Mac OS 8.

To extract the ROMs and install them on the card, first remove the cover from the Macintosh. Look for the ROMs on the motherboard. They will be a 1, 2, or 4 chip set in a 28-, 32-, or 40-pin package. Most Mac motherboards label the ROM chips right on the board with markings such as 'ROM HIGH', 'ROM LOW', 'ROM HH', 'ROM LL', etc.

On each ROM will be part number of the form 341-0XXX or 342-0XXX. The XXX is a 3 digit part number than uniquely identifies each ROM chip. For example, the picture here shows a set of Mac 512 ROMs plugged into the ROM card. If you can read it, note the part numbers on the two chips - the first one is 342-220-A, the second chip is 342-221-A.

Once you unplug the ROMs from the Macintosh, installing the chips is easy. Install the chips in numerically in the order listed in the chart below so that SoftMac will detect them correctly. When installing 28-pin chips, leave empty pins to the left of the chip as pictured above. ROM chips will 32 pins will plug in covering the entire socket. 40 pin ROMs (such as from the LC III) are not supported directly without using additional sockets to sit on top of our card and are not recommended. A ROM image of those ROMs can be used though.

The following is a list of ROMs and part numbers that we've cataloged so far. We will be updating this list as we test ROMs from more Mac models.

Online

For each Macintosh ROM we list the models of computers that the ROM was used in and the unique 'checksum' of the ROM. The checksum is displayed by the ROM dump utility and identifies the specific version of the ROM. Apple released dozens of different Macintosh ROMs over the years. For each ROM we also list the type of processor that it supports, the size of the ROM image, the physical information about the ROM chips, the part number, the versions of Mac OS supported by the ROM, and which emulators support this ROM.

Information that is unknown or unsupported is marked with a * symbol.

ROMs that are marked as 'jumpers' are not standard 28- or 32-pin ROMs and will require extra installation steps. Installing them yourself is not recommended.

Emulators legend: G = Gemulator 2000, S = SoftMac 2000/Classic/Xpress, P = planned for a future SoftMac release, F = Fusion PC

Macintosh
Model or Series
Processors
supported by ROM
Emulators which support this ROMROM size in kilobytesROM chipsPins on
each ROM chip
Part number
341-0XXX
342-0XXX
ROM checksumMac OS versions
supported
Mac 128
Mac 512
68000G, S64228220, 22128BA61CE
28BA4E50
1.1g to ???
Mac Plus68000-68020G, S128228341, 3424D1EEEE1
4D1EEAE1
4D1F8172
1.1g to 7.5.5
Mac SE (800K)68000-68020S256228 JUMPERS352, 353B2E362A81.1g to 7.5.5
Mac SE (HDFD)68000-68020S256228 JUMPERS701, 702B306E1711.1g to 7.5.5
Mac Classic68000-68020S256 or 512140 JUMPERS813A49F99141.1g to 7.5.5
Mac II (800K)68020-68030S256428105, 106, 107, 1089779D2C4
97851DB6
5.0 to 7.5.5
Mac II (HDFD)
Mac IIx
Mac IIcx
Mac SE/30
68020-68030S256428639, 640, 641, 642972211365.0 to 7.5.5
Mac Classic II
Mac IIvi
68020-68040S, F512432864, 865, 866, 8673193670E6.0.5 to 8.1
Mac IIci68020-68040S, F512432736, 735, 734, 733368CADFE6.0.5 to 8.1
Mac IIsi68020-68040S, F512***36B7FB6C6.0.5 to 8.1
Mac IIfx68020-68040S, F512***4147DD776.0.5 to 8.1
Mac LC68020-68040S, F512432392, 393, 394, 395350EACF06.0.5 to 8.1
Mac Iici
Mac LC II
68020-68040S, F512432476, 475, 474, 47335C28F5F6.0.5 to 8.1
Mac IIxi68020-68030S, F512***35C28C8F6.0.5 to 8.1
Mac Color Classic68020-68040S, F1024***ECD99DC07.0.1 to 8.1
Mac IIvx68020-68030S1024***495798035.0 to 7.5.5
Mac LC III
Performa 460
68020-68040S, F1024240
JUMPERS
661 662ECBBC41C7.0.1 to 8.1
Powerbook 18068020-68040S, F1024***E33B27247.0.1 to 8.1
Mac LC 475
Performa 475
Quadra 605
68020-68040S, F1024***FF7439EE7.0.1 to 8.1
Mac LC 580
Performa 580
68020-68040S, F1024***064DC91D7.0.1 to 8.1
Mac LC 630 Performa 63068020-68040S, F1024***066842147.0.1 to 8.1
Centris 610
Quadra 610
68020-68040S, F1024***F1A6F3437.0.1 to 8.1
Centris 650
Quadra 650
68020-68040S, F1024***F1ACAD137.0.1 to 8.1
Quadra 700
Quadra 900
68020-68040S, F1024***420DBFF37.0.1 to 8.1
Quadra 95068020-68040S, F1024***3DC278237.0.1 to 8.1
Quadra 660AV
Quadra 840AV
68020-68040S2048***5BF10FD17.0.1 to 8.1
Powerbook 530068040-PPCP4096***63ABFD3F7.5 to 9.0
Power Mac 610068040-PPCP4096***9FEB69B37.5 to 9.0
Power Mac 710068040-PPCP4096***9A5DC01F7.5 to 9.0
Power Mac 860068040-PPCP4096***960E4BE97.5 to 9.0
Power Mac G368040-PPCP4096***79D68D637.5 to 9.0
???68040-PPCP4096***96CD923D7.5 to 9.0

If you have a Mac not listed here or have ROMs with different part numbers, let us know so we can add them to the list. Give us the model of Macintosh, the year it was manufactured, the type of processor inside of it, the number of ROM chips, the number of pins on each ROM, and read off all the text on each ROM.

Please do not send us information about old Macintosh clones (UMAX, Power Computing, etc.) or Mac OS X only machines. These are not true classic Macintosh computers and are thus not intended to be supported by our emulators.

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Apple, Mac OS, Macbook, and Macintosh are registered trademarks of Apple Computer, Inc. Atari is a registered trademark of Atari U.S. Corporation. Athlon, Athlon XP, Opteron, and Phenom are registered trademarks of AMD. Microsoft, Windows, Windows NT, Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10, Visual Studio, .NET, and/or other Microsoft products referenced herein are either trademarks or registered trademarks of Microsoft. Intel, Pentium, Core 2, Core i7, and Atom are registered trademarks of Intel. PowerPC is a trademark of IBM. Additional company and product names may be trademarks or registered trademarks of the individual companies and are respectfully acknowledged.

Macintosh Emulator