With the increase of x86 PCs in the market, there was a vacuum in sound performance in home computing that expansion cards attempted to fill. The first two recognizable standards were the Roland MT-32, followed by the AdLib sound card. Roland's solution was driven by MIDI sequencing using advanced LA synthesizers. This made it the first choice for game developers to produce upon, but its higher cost as an end-user solution made it prohibitive. The AdLib used a low-cost FM synthesis chip from Yamaha, and many boards could operate compatibly using the MIDI standard.