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CGA Composite Mode under DOSBOX (Commited r3804)
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	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2009-7-11 @ 09:39 am
FeedingDragon Member Joined: 2003-08-24 Posts: 151 Location: Central Texas	wd wrote: Well then "fix" composite emulation and you may get a switch. Or not because nobody cares. Um, as an avid Ultima fan, I care Don't have the knowledge/skill to do anything about it, but I would very much like it to be on your list of "Things we intend to do eventually" if it is at all possable. Thank you _________________ Feeding Dragon

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-16 @ 11:12 pm
pbblair Newbie Joined: 2010-02-16 Posts: 5	Wow, this is the best thread on this topic, ever. I have a challenge for y'all, though. It's called TROLL'S TALE. I use this game as one tool for teaching English to Deaf children in Kenya... it's a good game because it's multiple choice. The kids just get turned off by the bad colors. It's a CGA composite title, and it looks nice in DOSBox when I set it to emulate CGA. The problem is that I want it to look good even if DOSBox is set to VGA (because I have a DOS-based game launcher, and I'd prefer to mix VGA and CGA titles within it), or when I'm in "real" DOS on a VGA system, like an old Pentium box. I'm under the impression that the TSRs being posted in this thread might be what I need, but they don't seem to do anything. Maybe the problem is that Troll's Tale takes over the keyboard so Alt-P doesn't work, or maybe I just need a better understanding of what these TSRs are supposed to do, but I REALLY want them to do what I think they do (magic). Check out Retrograde Station to get the Troll's Tale CGA EXE: http://web.archive.org/web/200805290347...sierra.htm They also have a "patch" on that page (which I use) to make it work on VGA displays, but it only fixes the resolution, not the chroma, so the scale is right but the colors look terrible. You can see pics here of the ugly "patched" version, as well as the nice original CGA composite version: http://www.mobygames.com/game/pc-booter...creenshots My aplogies for tacking onto this thread, but all the right minds seem to be here, and despite the earlier suggestion, I couldn't find another thread that just focused on the TSRs. Thanks... any feedback would mean a lot. -Paul

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-16 @ 11:31 pm
Jorpho l33t Joined: 2003-02-14 Posts: 2758 Location: Canada	pbblair wrote: The problem is that I want it to look good even if DOSBox is set to VGA (because I have a DOS-based game launcher, and I'd prefer to mix VGA and CGA titles within it) Configure your game launcher to use the "-machine cga" command-line argument, as described in the DOSBox readme. All done. Quote: or when I'm in "real" DOS on a VGA system, like an old Pentium box. I don't think that's possible.

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-17 @ 04:35 am
pbblair Newbie Joined: 2010-02-16 Posts: 5	Quote: Configure your game launcher to use the "-machine cga" command-line argument, as described in the DOSBox readme. All done. Sorry, probably my fault for being vague. I have a DOS menu that I want to use inside of DOSBox, which in turn launches mostly VGA/EGA games, and this one CGA game. I don't want to run DOSBox in CGA mode, since I'm not using a DOSBox front-end. THe reason? Consistent user experience between the real DOS machines and the DOSBox machines. Quote: I don't think that's possible. What are all these TSRs for? For use in DOSBox only?

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-17 @ 04:46 am
ripsaw8080 DOSBox Author Joined: 2006-04-25 Posts: 2903	Yes, the TSRs are designed for DOSBox, and for machine=cga; they don't apply to what you're trying to do because the game already works with the composite color emulation.

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-17 @ 06:52 am
pbblair Newbie Joined: 2010-02-16 Posts: 5	I see. Is there anything that resembles what I'm looking for? All I've found are TSRs that allow you to use CGA on Hercules cards. Would it be possible to pull out the code from DOSBox to make a composite emulator TSR for real DOS? How big would such a thing be? Maybe if someone got it started it could be handed over to FreeDOS for maintenance. Seems like there'd be a market for it. Googling "CGA Composite Emulate" brings up other forums with people making complicated converter boxes to achieve the same purpose within real DOS.

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-17 @ 08:10 am
robertmo l33t Joined: 2003-06-18 Posts: 3784	pbblair wrote: THe reason? Consistent user experience between the real DOS machines and the DOSBox machines. Could you elaborate a bit as I totally don't understand what you mean?

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-17 @ 09:32 am
pbblair Newbie Joined: 2010-02-16 Posts: 5	Meaning that in the same room, I have a 486 machines with 8MB RAM as well as P4 machines. The 486s boot into DOS, then into a graphical menu. I want the new machines to work the same way-more-or-less, except that they boot to Windows/Linux/whatever, and then they start DOSBox, which loads the exact same menu that they're used to. So to the kids, except for the couple extra steps at the beginning for the new machines, all the computers are the same. I don't want to have to explain that there's a special step for Troll's Tale to get the colors to look right, and that it only works on the new machines... it would be too much information. So for now, I'm using the "patched" Troll's Tale that works on VGA but looks terrible. I just know that if it looked better, they'd play it more which would help their English. So if I could find a TSR that emulates CGA Composite, or even one that just eliminates the ugly vertical banding, that would solve everything.

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-17 @ 10:47 am
robertmo l33t Joined: 2003-06-18 Posts: 3784	for new machines you can start dosbox from a .bat file that has got a lot of dosbox.exe lines: dosbox.exe dosbox.exe dosbox.exe dosbox.exe etc. and make your dos menu swap dosbox.conf files when you want to run trolls, and exits dosbox. new dosbox will be run automatically with dosbox.conf prepared specially for trolls. (it has to swap dosbox.conf files back before running the game, so that it will work properly with other games when you closes dosbox again) For old machines just remove trolls from there. So if anyone would like to play trolls he can swap computers with the other that wants to play some other game.

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-24 @ 06:35 pm
Luchsen Newbie Joined: 2010-02-24 Posts: 3	I use those nice little programs since a few months, and since the discussion came to Troll's Tale I wanted to add some screenshots. The same scenes as in the attachments on genuine composite (MobyGames): #1 #2 The only thing that annoys me is that the change is permanent. Even when I restart DOSBox, it gives me the composite mode.

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-24 @ 06:46 pm
robertmo l33t Joined: 2003-06-18 Posts: 3784	you can set machine type in dosbox configuration

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-24 @ 07:47 pm
Luchsen Newbie Joined: 2010-02-24 Posts: 3	Setting the machine type back and forth doesn't change it.

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-24 @ 07:55 pm
robertmo l33t Joined: 2003-06-18 Posts: 3784	this game was written for cga composite only so dosbox uses composite. You cannot force dosbox to use rgb if the game is for composite only.

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-24 @ 08:35 pm
Luchsen Newbie Joined: 2010-02-24 Posts: 3	DOSBox normally uses RGB (why should I post the screenshots if they were the standard output?). Therefore this thread and the auxiliary help programs. Correct me if I'm wrong, but all composite CGA games are for RGB CGA too.

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-24 @ 08:41 pm
robertmo l33t Joined: 2003-06-18 Posts: 3784	some games are for cga composite (so they look not properly on rgb), some games are for cga rgb (so they look not properly on composite), some games have a switch to choose between rgb or composite. some games look the same on both dosbox can display some resolutions in composite. some resolutions are still not supported in dosbox in composite so they are displayed in rgb

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-25 @ 04:59 am
kiyote Wookie Programmer Joined: 2010-02-25 Posts: 6	@pbblair I am going to attempt to go back to your original post. If I were you I'd switch on the TANDY mode. It looks like it supports the TANDY 16 color graphics. VGA supports standard CGA graphics modes, because it is REALLY backwards compatible by nature. The TSR's will not work in VGA mode, because after you enable VGA, DOSBOX is only going to show CGA as those four colors. In CGA mode however, it buffers the video and waits to see if the user is mimicking the actions of using a NTSC video monitor. What I would do is use the DOS menu outside of DOSBOX, and create batch files which invoke instances of DOSBOX with the various configurations. You need to use the menu outside of DOSBOX, because it is issuing a command to Windows to start the executables. You can take an entire CONF file and stuff it into the command line after DOSBOX.EXE, figuratively speaking, you just rewrite the same switches like DOSBOX expects, all in the DOSBOX manual. Those TSR programs don't do much, except enable DOSBOX in an assistive way to catch the attempt to turn on CGA COMPOSITE mode, and trigger it properly. The EXE one, that I made, just triggers the color burst, which will take some games and make them start to bleed color, if in the right CGA mode in the first place. The COM TSR, that the other thread postee created (quite skillfully I might add), watches constantly for a certain request of screen mode, and eliminates the accidental junk that stops the COMPOSITE CGA to not work for various reasons. They play on DOSBOX's triggers to start COMPOSITE emulation, and don't fully emulate COMPOSITE CGA, not even a bit. They help it act more like an actual CGA card would act. To re-write an entire CGA COMPOSITE emulation TSR, just for DOS, would take a wizard in assembly language for one, and lots of time to debug, and someone with the passion and desire to see it even attempted, plus the coding skills. "there's a special step for Troll's Tale to get the colors to look right" - What do you mean by this? Are you using one of the TSR programs to get the colors right? Also, I can rewrite my TSR so it does it's thing without needing to press ALT-P. ~Kiyote

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-2-25 @ 05:02 am
kiyote Wookie Programmer Joined: 2010-02-25 Posts: 6	BTW, I have this thread favorited. I am going to attempt a remake of an unfinished Apple game that I was working on a LONG time ago, using DOSBOX as the "Apple" computer platform again, and in DOS.

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-9-05 @ 03:23 pm
BdR Newbie Joined: 2010-09-05 Posts: 10 Location: The Netherlands	This composite mode is pretty interesting. I've downloaded the COMPCGA3.EXE program and tried some stuff. Here is a GW-BASIC program to print 15 patterns in screen mode 6402002, see screenshots below for the results. Code: 10 SCREEN 2:CLS 20 Y = 0: YSIZE = 8 30 FOR COUNT = 0 TO 15 40 LOCATE COUNT+1, 1 50 PRINT COUNT 60 GOSUB 100 70 Y = Y + YSIZE 80 NEXT COUNT 90 END 100 FOR X = 40 TO 320 STEP 4 110 IF ((COUNT AND 1) <> 0) THEN LINE (X+0, Y)-(X+0, Y+YSIZE-1) 120 IF ((COUNT AND 2) <> 0) THEN LINE (X+1, Y)-(X+1, Y+YSIZE-1) 130 IF ((COUNT AND 4) <> 0) THEN LINE (X+2, Y)-(X+2, Y+YSIZE-1) 140 IF ((COUNT AND 8) <> 0) THEN LINE (X+3, Y)-(X+3, Y+YSIZE-1) 150 NEXT X 160 RETURN

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-9-05 @ 03:28 pm
BdR Newbie Joined: 2010-09-05 Posts: 10 Location: The Netherlands	I also used the resulting colors as a color palette in Paint Shop Pro in windows. I converted 2 pictures to use these CGA composite colors, and load them in PC-Paint in dosbox. See conveted gif files, and screenshots in attachement.

	Re: How do you switch to CGA Composite Mode? (Fooblitzky) :: 2010-9-07 @ 01:08 pm
VileRancour Hawklord Joined: 2003-05-14 Posts: 854 Location: B800:0000	Hey BdR, that looks awesome. I like the idea of creating new CGA composite art Might try a few myself when I find the time, stay tuned....

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