Z-80 SoftCard

Z-80 SoftCard
DeveloperMicrosoft
Release date1980; 44 years ago (1980)
Operating systemCP/M
CPUZ80
PlatformApple II
SuccessorPremium Softcard IIe

The Z-80 SoftCard is a plug-in Apple II processor card developed by Microsoft to turn the computer into a CP/M system based upon the Zilog Z80 central processing unit (CPU). Becoming the most popular CP/M platform and Microsoft's top revenue source for 1980, it was eventually renamed the Microsoft SoftCard, and was succeeded by Microsoft's Premium Softcard IIe for the Apple IIe.