Altos Series 5 CP/M MP/M Z80 computer

Producer: Various  -  Category: Personal Computer

Multi-user computer, 1982, Altos Computer Systems. The Altos Series 5 is a small multi-user system built around a Z80A with 192 KB of RAM, sold to small businesses with the MP/M II operating system, which let up to three users work from serial terminals, or with CP/M for single users and the Oasis system. The Series 5-5D has two 5.25" floppy drives of 500 KB, the 5-15D one floppy and a 5 MB hard disk. Altos was one of the main suppliers of low-cost multi-user machines before the PC and Unix took over that market.

Years1982 to 1985
ProcessorZilog Z80A at 4 MHz
RAM192 KB, bank-switched
Storage2 x 5.25" floppy drives of 500 KB, or one floppy and a 5 MB hard disk
Operating systemMP/M II, CP/M 2.2, Oasis
Ports6 x RS-232 (terminals, printers, modem), Centronics
Usersup to 3 simultaneous terminals

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