Did more searching, particularly on the PC-98 version. Additional stuff found:
- The copy of the PC-98 Civ1 port (that I load into an emulator for casual play) states
"CIV.EXE V41126B" when it is run, presumably a version number. Not sure if it's the original version, a patched version of some sort, or somewhere in between. I have a physical big box that unfortunately does not actually run on my particular model (it gets through the mouse/sound options, which is where this "V41126B" text would appear, but locks up when attempting to load further - probably because of window accelerator incompatibility or perhaps the lack of a sound card). I will have to check and see if the physical copy I have gives a different response.
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PC-98 seems to have a per-civ unit cap close to the DOS version of around 128 - the sheet says 126 since that's the number of units I had when I first encountered the "You have too many units, disband old ones" message, but it was a bit inconsistent/flaky. Perhaps it just doesn't build any units in a turn if building all of them would bring the unit count above the cap. I've pretty much conquered the entire world in the save I'm working with, but I have to leave one CPU city alive since, like the original, it just boots you out to DOS if you get a domination victory.
- I made a mistake earlier and misattributed the music format used in the PC-98 version, it seems to use the same CVL format as the DOS version.
- The PC-98 version
appears to use the DOS 01 (older model, no redshirts) happiness model, though the way I play Civ1 is a) in Chieftain difficulty, and b) by completely ignoring Democracy/Republic and just going with Monarchy because I don't care for the "unit away from home" penalties, so maybe I'm just not seeing it.
- Outside of the PC-98 version,
I marked those Mac patches you mentioned, though I listed them twice (once for the monochrome version and once for the 256-color version). I also noticed that I had called it the "86K Macintosh" - whoops!
I also looked at some reviews of the Amiga version(s), and was able to add a few bits from the screenshots. In doing so, I found a 1994 German AGA release, published by a company named Komport. Not sure if it's just a translation or if there were any code changes.
(I'm not intending to list any re-releases unless there was some sort of code change involved. If it's just the 1993 AGA version with a German translation, I'll merge the two AGA rows back together.) Lastly,
I found a French-language technical supplement online for the Atari ST version, so I tacked that on as evidence of that port being released in France (I replaced the generic "EU" region with individual countries, save for the CivNET version).