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the Gryphel Project

The goal of the Gryphel Project is to help preserve software made for early Macintosh computers, the computers that Apple sold from 1984 to 1996 based upon Motorola’s 680x0 microprocessors.

Mini vMac

The center of this project - a family of free and open source emulators that allow such software to be used on modern computers


The rest of this project - software for the early Macintosh, links to alternatives to Mini vMac, links to related forums, lists of books, and more.

Latest News : February 17, 2019

Today’s version of FDisasm fixes a bug reported by Ryan that affected disassembling floating point conditional long branches. It also partially reverts for now a change made in 1.2.6. If an instruction (or data) that is about to be output is longer than the space left to be disassembled, it will now not abort outputting the instruction, and just give a warning. This version also starts to provide ways to avoid the situations that lead to this problem. Disassembly of PC relative addressing modes can now use the AC and SC options for adding or subtracting a constant. There is a new ‘,’ option to indicate which argument options like AC and SC apply to. It also now checks that such one time options are actually used by the current instruction, and prints a warning if not.

In today’s version of ReAsm, string constants can have continuation lines. A return character, optionally followed by one or more tab characters, is accepted in a string constant and ignored. If you want a return character in the string constant, “\r” should be used intead. Tabs are not allowed elsewhere in string constant, “\t” should be used instead. A space character is not allowed before or after a return charcter in a string constant, “\s” should be used instead. Any arbitrary character can now be put in a string constant, by specifying it in hexadecimal, such as “\xB5”.


Previous release notes - Recent News


Thanks to Derek Etnyre, Tim Rodgers, John Feinberg, Lance Lannigan, Japhy Riddle, John Prchal, John Leake, Bronstrup Creative, Bruce Rayne, Ellery Bann, Matthew Tubbs, Thomas Jouneau, Sharon Lam, Macintosh Repository, Randall Trowbridge, Golan Klinger, FUJITA TAKUJI, Richard Lawson, David OConnor, Polycarpos Kostrivas, Bennett Foddy, Chris Hanson and Henry Shawcross for sponsoring three months of web hosting for the Gryphel project and over 23 days of health insurance.

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