Northwest Digital Systems

Location: Seattle, WA

H/Z89 Hardware


1024 x 500 high-resolution graphics for the H/Z29, gives Tektronix 4010/4014 and DEC VT100/VT200 compatibility; four-level gray scale, pan, zoom, animation, arc draw, and more; full screen set-up, nonvolatile programmable keyboard and 132-column display; 75-page text memory; mouse and printer support. $995


512 x 250 medium-resolution graphics for the H/Z19, gives Tektronix 4010, 7 pages of off-screen memory, menu driven set-up mode, programmable keys, 80/132-column text displays, and more $695

GP-19 Manual (5.5M)

GP-19 Manual - archival version (101M)

Current Status: Assumed closed


Last Modified: Sunday, 25-Feb-2024 22:34:12 PST

Contact Details

Mark Garlanger

Email: heathkit [at] garlanger [dot] com

If you email me, PLEASE check your spam filter for any responses.




This site is dedicated to preserving the history of the original Heathkit computers. They were initially release in 1977 and included the 8-bit H-8 and 16-bit H-11 systems. The H89 was released in 1979.