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Re: Knight Force copy protection

Posted on 2020-06-24, 23:44

in Milliways
... FA cli <- some interrupt magic going on 33 C0 xor ax, ax 8E D8 mov ds, ax assume ds:seg000 C7 06 04 00 D5 01 mov word ptr loc_3+1, offset byte_B2E5 8C 0E 06 00 mov word ptr loc_3+3, cs 9C pushf 58 pop ax 0D 00 01 or ax, 100h 50 push ax 9D popf FB sti ; <- some interrupt magic going on ... But …

Re: Ancient DOS Games Webshow

Posted on 2020-06-06, 21:38

Well, I can only guess that you have a different version of Keen 4 and 5. There are at least two or three different versions of "version 1.4" floating around. My patches are for the Apogee release of version 1.4, and they also work with the FormGen release of Keen 4 v1.4, which is almost identical …

Re: Physical copies of PC games from ~2007 to 2012, and GFWL

Posted on 2020-05-31, 21:50

in Milliways
I have four games with a "Games for Windows LIVE" logo on the box: 007 Quantum of Solace Bioshock 2 Fallout 3 (GOTY edition) Star Wars - The Clone Wars: Republic Heroes All of these are German releases. Other releases might behave differently. My copy of Fallout 3 GOTY doesn't use GFWL anymore. I …

Re: Ancient DOS Games Webshow

Posted on 2020-05-17, 21:06

Some game objects are always active (like the moving platforms, for example). Regular enemies are usually made inactive when starting a new level and will then turn active once they get close to the visible area (i.e. within 16-31 pixels outside the visible area). If an enemy has the ability to be …

Re: Ancient DOS Games Webshow

Posted on 2020-05-16, 21:53

Additional Information and Corrections: * The enemies aren't always active, or at least most of them aren't. What's actually happening is that the game chooses the initial walking direction for most enemies based on pseudo-random numbers when (re-)starting the level. * The timing for the screen …

Fix Display Problems in Crystal Caves and Secret Agent

Posted on 2020-04-07, 20:55

Here is a fix that will help you if you're trying to run Crystal Caves and/or Secret Agent on a real DOS PC and the display is only showing you vertical lines that stretch from the top of the screen all the way to the bottom, like in the following screenshot: cc1-bug.png Copy the following script …

Re: Jerky scrolling in Commander Keen 6

Posted on 2020-02-28, 22:21

That border is the "overscan" area. As far as I can tell, it's only visible on real hardware when connecting the monitor via a VGA cable, not DVI or HDMI or whatever. It's also possible that more modern CRT and/or LCD monitors adjust the position of the display so that the overscan area is not …

Re: Jerky scrolling in Commander Keen 6

Posted on 2020-02-28, 01:38

Here's a more up-to-date version of my Keen 4-6 fixes. https://pckf.com/viewtopic.php?f=4&t=6192 I think you'll get better results with these updated patches. But the new code does introduce a slight delay after updating the screen, which may be noticeable on rather slow systems (286 and below). …

Re: Keen 4-5-6 choppy scrolling on EGA card

Posted on 2020-02-28, 01:17

I'm most definitely not going to upload full versions of these games, neither patched nor unpatched. That would be illegal. The point of using these patch scripts instead of providing fully patched executables is that the patching program can check if your game version matches the version the patch …

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