Tandy Radio Shack wanted to compete in the education, school and home market, which was dominated at the time by the Apple IIe. In 1987, they partnered with Diamond and through Radio Shack sold the Diamond Trackstar 128 series Apple IIe compatibility board for $399, and offered free installation in their Tandy 1000 series. This peripheral was similar to Apple IIe Card sold later for certain Macintosh models; it was a fully functional Apple IIe clone with 128k ram and 6502 CPU and double high resolution graphics which allowed Tandy 1000 computers to run software written for the Apple IIe and IIc platform, an especially important consideration in the education market of the time. It was also marketed to home users and businesses interested in both MS DOS and Apple II compatibility.