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Title: VMac  
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Subject: Message authentication code, UMAC, PMAC (cryptography), SANDstorm hash, SIMD (hash function)
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Mini vMac running System Software 7 on Ubuntu
Developer(s) Philip Cummins
Bill Huey
Weston Pawlowski (Windows)
Yoav Shadmi (DOS)
Richard Bannister (Mac OS)
Michael Hanni (Linux)
David Bacher (OS/2)
Paul C. Pratt (Mini vMac)
Stable release 0.19 (vMac), 3.3.3 (Mini vMac) / April 26, 1999 (vMac), January 17, 2014 (Mini vMac)
Operating system Microsoft Windows, Linux, Mac OS, NeXTSTEP, OS/2, DOS, iOS, Nintendo DS, Android
Type Emulation
License GNU General Public License
Website .org.vmacwww (vMac, outdated)
.html/index/minivmac/ (Mini vMac)
vMac 0.1.9 running System 1.1 on System 7.5

vMac was an open source emulator for Mac OS on Windows, DOS, OS/2, NeXTSTEP, Linux-Unix, and other platforms. Although vMac has been abandoned, Mini vMac, an improved spinoff of vMac, is currently developed. vMac and Mini vMac emulate a Macintosh Plus and can run Apple Macintosh System versions 1.1 to 7.5.5. vMac and Mini vMac support central processing unit (CPU) emulation from Motorola 68000 to 68040, display output, sound, floppy disk insert, HFV image files, and more. Some vMac ports include extra features such as CD-ROM support, basic serial port (SCC) support, Gemulator ROM board support, and various performance improvements. Although the website is still in operation, most vMac development slowed to a halt in 1999, and no official releases have been made since. Many of the developer e-mail addresses listed on the website are not currently working on it.


Mini vMac, vMac's spinoff, is still being maintained and developed by Paul C. Pratt. Currently Mini vMac supports Macintosh Plus with 4 MiB of RAM.

vMac and Mini vMac require a Macintosh Plus ROM file and Macintosh system software to work. Macintosh ROM files are owned by Apple and cannot be legally distributed. However, the Windows and Unix ports of vMac (not Mini vMac) support the Gemulator ROM board from Emulators Inc., which allows users to add genuine MacPlus ROM chips to their x86 machine via an ISA expansion slot. This board can also support ROM chips from other early Macintosh systems, but the publicly released versions of vMac only supported the Macintosh Plus. Macintosh system software is available from Apple's Support Downloads Website (see External links below).

As mentioned, Mini vMac also requires a specific ROM image for the computer emulation desired. A software application for these 68000 Macs may be downloaded from the Mini vMac website for retrieval of a system's ROM image, along with a complete tutorial for locating an old Mac, retrieving the ROM and working with disk images.

See also

  • Basilisk II, an emulator of later 68k Macs.
  • Executor (software), a emulator/compatibility layer for early 68k Macs.
  • SheepShaver, an emulator of early PowerPC Macs.
  • PearPC, an emulator of PowerPC Macs, can run Mac OS X and various open Unices.

External links

  • Official website vMac
  • Official website Mini vMac
  • Apple's Support Downloads Website
  • Guide to setting up System 6 in Mini vMac for Windows
  • Creating a Mac-on-Stick using Mini vMac
  • Emulators, Inc.
  • Guide to setting up System 6 in Mini vMac
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