Help with a "Mark 1" 6502 SBC

This unit was purchased some time back off Craig's List from an individual who stated he couldn't even remember where he acquired it.. Thus it has no provenance of any kind. There appears to be no information on the web searching the usual places and using the obvious terms. Unit is labeled "Mark 1". It has a 6502 CPU and the appropriate support chips to qualify as a SBC although the keypad is not labeles as a typical hex pad. Date codes seem to be early 80s. The printer uses a character belt rather than thermal. only label anywhere on the unit seems to be the two "Made in Hong Kong" stickers! thoughts/suggestions on what this is or where to look for more info would be most welcome! (plan to post a msg on 6502.org but figured to start here) http://picasaweb.google.com/114639080007220617932/Mark1SBC6502?feat=directl… steve On 11/9/2010 11:49 PM, Rod Smallwood wrote: