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Osirus emulates the Access Virus A, B and C. The easiest way to install and update it is the TUS Plugin Manager; the Installation Guide explains it, and where the ROM goes.

Downloads	Windows	macOS	Linux x64	Linux aarch64
Osirus	Download	Download	Download	Download
OsirusFX (effect version)	Download	Download	Download	Download
Performance test	Download	Download	Download	Download

Every version of Osirus and OsirusFX, or our GitHub Releases Page. To install by hand, see Installing by hand.

Performance test

Find out whether your computer is fast enough before you install. Unpack it, put the ROM into the same folder and run the .bat file (Windows) or the .sh file (macOS, Linux). The Virus C runs at 136 MHz and needs a result of 136 MIPS or more, the Virus B 108 MIPS and the Virus A 72 MIPS.