The compiler was first released as Compas Pascal for CP/M, and then released on 20 November 1983 as Turbo Pascal for CP/M (including the Apple II computer when fitted with a Z-80 SoftCard, effectively converting the 6502-based Apple into a CP/M machine, the Commodore 64 with CP/M cartridge, and the later DEC Rainbow), CP/M-86, and DOS machines. On its launch in the United States market, Turbo Pascal retailed for USD49.99, a very low price for a compiler at the time. The integrated Pascal compiler was of good quality compared to other Pascal products of the time.