Vicious has made and expansion card for the Apple I with an Commodore C64 SID chip. The card also has a CIA chip (timers / joystick) and a ROM with firmware for the Vicious SID Player. The card can use the 6581 and 8580 SID. The Vicious Sid Player is able play many of the tunes created for Commodore 64 environment, but not all.