direct access of the host's file system (in OS-9 notation).

support for RBF-formatted SCSI devices (original OS-9 formatted SCSI harddisk can be used).

support for RBF-formatted (OS-9 original format) disk images.

version running under MacOS9/MacOSX: released (including Universal Binaries for Intel Macs).

In the meantime, the development got much further thanks to the huge work contributed by Beat Forster ( version running under Windows: released Today's machines are even with such an emulator much much faster than native 68040 or 68060 processors.

With Version 2.13 the runtime environment grew to a real emulator, which is able to run most OS9 user programs in a multitasking environment.īy adding the UAE/68k processor emulator, it is possible to run OS9exec on other architectures, PowerPC and x86. With Version 1.14 of os9exec, which was available for download for several years, this was possible for the first time. We had to develop a runtime environment which allowed to run the native OS-9 executables within the MPW environment. The CPU was, at that time, the same in both systems (Motorola 680xx). The idea was to combine OS-9 with the MPW development environment on the Apple Macintosh for cross-development of OS-9 industry applications.

This project is rooted in the early 90ies, when we were working with the OS-9 industrial RTOS.

Os9 68k emulator -mac -macos dsk image