Remember the ZX81 had a Z80 with up to 64Kb of RAM?
Looking at the filesystem I figure there's probably a ZX81 buried in there somewhere, but he seems to have added rather a lot of extra hardware, not to mention his own operating system. So: what you're looking at isn't a classic ZX81 so much as a Z80-based custom rig with storage on MMC -- fuck knows how -- and its own IP stack (possibly missing out lots of stuff; I wouldn't be surprised if it's basically SLIP over RS-232 and handling TCP traffic on port 80 only, with a real PC in the loop somewhere to act as a router).
(we put a scary amount of effort into making that look plausible, including generating suitable uptimes and throttling the server to make it look like it was running on something very slow)
no subject
Date: 2009-05-31 12:27 pm (UTC)Looking at the filesystem I figure there's probably a ZX81 buried in there somewhere, but he seems to have added rather a lot of extra hardware, not to mention his own operating system. So: what you're looking at isn't a classic ZX81 so much as a Z80-based custom rig with storage on MMC -- fuck knows how -- and its own IP stack (possibly missing out lots of stuff; I wouldn't be surprised if it's basically SLIP over RS-232 and handling TCP traffic on port 80 only, with a real PC in the loop somewhere to act as a router).
no subject
Date: 2009-05-31 01:50 pm (UTC)no subject
Date: 2009-05-31 02:49 pm (UTC)(we put a scary amount of effort into making that look plausible, including generating suitable uptimes and throttling the server to make it look like it was running on something very slow)