...mostly appears to be related to failing to resolve archive.raspberrypi.org. Is that still valid? Is it having issues unrelated to the Pi I'm trying to update? Does it need to be changed on my end, and--if so--how?
On an semi-related issue... I've seen a fair amount of comment about using "DOSBox". Apt-get install doesn't find anything for that (I've tried all lower case as well as some mixed case name variants). Where/how do I get it?
(Goal is to try running Wizardy 7: Crusaders of the Dark Savant. Since it was released in 1992 and ran really well on a 120MHz 32MB 486, I figure the Pi should handle it just fine.)