MY Retro Gaming YouTube Channel – Please SUBSCRIBE to it.
https://www.youtube.com/c/StevesRetroGaming
https://www.ebay.com/str/steverd
XEMAG info from Peter Brown
Full article is at: https://prism.ucalgary.ca/bitstream/handle/1880/112303/2020-1115-01.pdf?sequence=1&isAllowed=y