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Windows runs Mac OS... and likes it!

Apple Macintosh emulation

More screen shots         Even more screen shots

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 a Macintosh emulator, your PC can:

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:

SoftMac XP Suite 8.20

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. Learn how to obtain the Mac OS 7.5, Mac OS 8, Mac shareware, ClarisWorks, and Mac ROMs now.

Some quick facts about the latest SoftMac XP release:

software bundle available with SoftMac 2000

Macintosh ROM BIOS Information

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:

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.

close up of 64K Mac ROMs on a Gemulator ROM card

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.

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

Model or Series
supported by ROM
Emulators which support this ROMROM size in kilobytesROM chipsPins on
each ROM chip
Part number
ROM checksumMac OS versions
Mac 128
Mac 512
68000G, S64228220, 22128BA61CE
1.1g to ???
Mac Plus68000-68020G, S128228341, 3424D1EEEE1
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
5.0 to 7.5.5
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
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
Performa 460
68020-68040S, F1024240
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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