How many games have actually been created in z-machine version 6 and 7? I take it v6 only four: the ones Infocom created (Zork Zero, Arthur, Journey and Shogun).
But what about v7? Have any games actually been published in that language, and what are Z7’s limits?
I’m sure it’s no longer a complete list, but ‘Z-code games in uncommon formats’ on IFWiki demonstrates that there has been at least one Z7 work.
(Which the web interpreter used by IFDB / iplayif.com chokes on, incidentally.)
Z7 has the same graphics/screen model as ZV5/8; only the memory model is different. (Same 4N+S address format as Z6, but addresses can go up to 512k.) This turned out to be useless in practice. Z8 has the same practical limit and is easier to deal with.