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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 : April 7, 2019

A new version of ReAsm now uses the MPW Assembler syntax for line continuations - using a backslash character. Also, the Immediate addressing mode is now handled by the same code used for “DC”, and so now supports subtraction of 2 labels. Debugging infrastructure code has been added.

ReAsm no longer displays an alert for syntax errors. Instead it creates a file name “err_log”. This makes it easier to use ReAsm from MPW scripts. If an error occurs, the output “bin” file is deleted. If no error occurs, the “err_log” is deleted if it already exists. The line number where a syntax error occurred is written to the “err_log” file.


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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copyright (c) 2018 Paul C. Pratt