3 ms·Given who wrote it, simh seems as close to an official VAX emulator as you are going to get.by rjsw 11mo agoGiven who wrote it, simh seems as close to an official VAX emulator as you are going to get.chasil 11mo agoThe Charon/Stromasys sales staff described it as a toy.anthk 11mo agoIn 1990's, maybe. Today simh-classic it's serious stuff up to the point a fork was made because some nut tried to tamper 1:1 disk/tape images with custom headers.