North Star Horizon

The NorthStar Horizon was a popular 8-bit S-100 bus computer introduced in October 1977. It was built around the ZiLOG Z80A microprocessor, and ran the North Star DOS, (Disk Operating System)  or the CP/M operating system. It was produced by North Star Computers, and it could be purchased either in kit form or pre-assembled. The … Read more

North Star Computers

North Star Single Density Disk Controller, Shugart SA-400 Disk Drive and Floating Board Board In the early days of 8080 eight-bit computers users bought either an Altair or IMSAI S-100 bus computers.  To get them up and running, the user toggled in a bootstrap loader that allowed the user read a BASIC interpreter from either … Read more