tandy put their sound chip on the 1A interrupt?
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turns out this version of the game has impressive support for older video cards. Here's Hercules support, which looks horrible without aspect ratio correction!
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wow, this is actually the first game I've seen actually use the VGA bios call to set the VGA palette. (int 10h, AX=1012h)
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everyone else just programs the VGA card directly.
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@foone Now I remember playing it on CGA...
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@whvholst Did it look like this?
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@foone IIRC QuickBasic's PALETTE call also went through BIOS.
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@jernej__s That'd make sense. it was never terribly fast, and it needed to run on absolutely everything DOS did, so why not use the slow BIOS calls?
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so when the game starts, it loads:
ACME.DAT
CARMEN.DAT
MIDISND.DAT
DIGISND.DAT
CITIES.DATInterestingly, it uses the same code to load the last three, suggesting they're some kind of basic container format
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@foone It was around 1987, almost forty years ago, the telex looks familiar, the cartoon dialogs less so.
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@whvholst probably this version then:
https://archive.org/details/msdos_Where_in_the_World_is_Carmen_Sandiego_1985 -
starting writing code to generate a JSON file of all the various switchable info in the EXE. Things like hobbies, hair colors, locations, etc.
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this blit function seems to take a useless first argument, a second argument that's the height, a third argument that's the width, and a fourth argument that doesn't seem to do anything.
notice anything missing? like... a lot of things?
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I think this game might be doing something weird where blit-source positions and destination positions are all globals, for some fucking reason
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I think it stores them inside the VGA driver? huh
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the game internally has 5 drivers (as of 2.2, I have other versions here and they're different): CGA, Hercules, EGA, Tandy, VGA.
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WHY ARE THERE TWO STRCATS
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@foone Because you can never have enough cats.
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@dalias you have a point!
