Zenith Z-89
The Z-89 is a personal computer introduced in 1979 by Heathkit, but produced primarily by Zenith Data Systems (ZDS) in the early 1980s. It combined an updated version of the Heathkit H8 microcomputer and H19 terminal in a new case that also provided room for a built-in floppy disk on the right side of the display. Based on the Zilog Z80 microprocessor it is capable of running CP/M as well as Heathkit's own HDOS.
Zenith Z-89 in Paris 2008 | |
| Also known as | Heathkit H89 |
|---|---|
| Manufacturer | Zenith Data Systems (ZDS) |
| Type | Personal computer |
| Release date | 1979 |
| Introductory price | Kit version with 1 floppy drive: US$1800 in 1979 (circa equivalent to $7,300 in 2022) |
| Discontinued | 1985 |
| Operating system | ROM monitor, HDOS, CP/M, UCSD Pascal (P-System Pascal), or MP/M |
| CPU | 2x 2.048 MHz Zilog Z80 (one for the terminal) |
| Memory | RAM: 16 KB – 48 KB on main board, optional 16 KB memory card (max addressable: CP/M - 64 KB, HDOS - 56 KB) |
| Display | 12" monochrome CRT, 80 x 25 character text |
| Sound | Beeper |
| Connectivity | 3 serial, 1 Centronics parallel (optional), external diskette drive connector |
| Related | Heathkit H88 |
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