olson@harvard.ARPA (Eric Olson) (05/15/85)
There is a newsletter, still sporadically published, that is the most authoritative source of information about the Sinclair ZX80, 81, and TS1000 ( and TS2068). All the back issues (3 years) are available: contact: SYNTAX Inc. RD 2 Box 457 Bolton Rd. Harvard, MA 01451 (617)456-3661 Good luck!