The Intel Haswell processor has arrived! Darek looks at what makes this the most significant improvement to x86 in many years, as well as what is happening with ARM, Atom, Bochs, Gemulator, SoftMac, and Xformer!
August 18 2013: Haswell's Great Leap Forward
May 6 2012: Windows 8 Beta and Intel Ivy Bridge
Dec 24 2011: 2011 - The Year of Smaller Thinner Faster
Nov 27 2011: Ivy Bridge emulation and faster multi-core: BOCHS 2.5 released!
June 4 2011: Fast Microcode Interpretation with Transactional Commit
October 2 2010: Surprise! More Mac OS 7.5 packages to give away
July 25 2010: A Closer Look At QEMU 0.12.5
July 16 2010: Long Live the PowerPC G5
July 12 2010: ISCA 2010 Conference
June 15 2010: The Unix Hiding in Windows 7
Read all of the previous NO EXECUTE postings here
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.
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.
An overview of the 2010 ISCA conference held in St. Malo France.
Learn more about how to build it for Windows, Mac OS X, and Linux:
The easy upgrade from Windows XP to Windows 7 without re-installing:
Travel back in time on YouTube to see these low budget classics:
Watch the SoftMac 2000 instructional videos from 2001: #1 #2 #3 #4 #5
Watch the classic Gemulator promo video from 1992: Part 1 Part 2 Part 3
Welcome to Darek Mihocka's Emulators web site. Since 1986 we have pioneered techniques for running Atari and Apple Macintosh software on PCs. Years before Apple made the switch to Intel, our SoftMac emulator was running Mac OS on Dell, Sony, and Gateway PCs in the 1990's.
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 Windows 7 emulation!
Download BOCHS 2.6.2 from SourceForge
Learn more about building BOCHS
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 Execution paper 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.
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?
Tips for getting the most from your Apple Mac, Windows PC, or netbook.
Pentium 4: In Depth
Writing efficient code means understanding the pitfalls of the hardware.
Find out which PCs our products run on and how fast they run. Now with Intel Core 2 benchmark results.
Official releases of SoftMac, Fusion PC, Gemulator, Gemulator Explorer, and Xformer.
News and Announcements
Latest product announcements, emulation news, and show updates.
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!
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.
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Questions and comments can be sent to
Email is usually responded to within 2 to 3 business days.
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, 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.