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Re: Authenticity of AdLib sound

Posted on 2007-01-26, 20:39

in DOSBox General
h-a-l-9000 wrote: You'd probably get quite some timing troubles. USB 2 uses millisecond frames. Well, afaik, that should be handled by the device or drivers. Also, the OPL2 is not that timing sensitive, as long as your delays are looong, no problems there 😀. JAL

Re: Authenticity of AdLib sound

Posted on 2007-01-26, 10:47

in DOSBox General
wd wrote: Are you sure opl3 is way off for all games, or is it just for certain types of games (those which might suffer from what Srecko said)? I don't know about OPL3, but OPL2 is not as much 'way off' as it is 'slightly'. It can be heard if you know what you're looking for. JAL

Re: Authenticity of AdLib sound

Posted on 2007-01-25, 15:15

in DOSBox General
That's why he used the "" :) Well it gets away from the point anyways... How true, my sincere appologies for getting off-topic. Yesterday, I found my original AdLib card back, brings back memories. Now if only I could afford such a nice ISA to USB device ( http://www.arstech.com/item--usb2isa.html …

Re: Authenticity of AdLib sound

Posted on 2007-01-24, 14:33

in DOSBox General
Well, waves aren't digital, so OPL chip registers contain a stream of data that represents a time-dependent wave function Sure, but in that respect all digital devices used to output data mnt for humans are emulators (a gfx card emulates colours, a sound card emulates sound, etc.), and that's not …

Re: Authenticity of AdLib sound

Posted on 2007-01-23, 12:30

in DOSBox General
Correction: I wrote that the chip is analog but it isn't (see Wikipedia page about OPL chip). Instead it "emulates" analog waveform through a very rapidly changing digital register. Result is very similar though. It doesn't 'emulate' anything. The OPL is a purely digital chip, needing a D/A …

Re: Authenticity of AdLib sound

Posted on 2007-01-22, 15:16

in DOSBox General
Here's two links describing capturing digital sound from the original AdLib: http://yehar.com/dsp/adlib/ads.pdf , http://www.cc.jyu.fi/~jrop/specials/digisnap/ . Iirc (but I may well not), the AWE64 has built-in OPL3 circuitry, equal to many OPL clone chips around. I'd find it hard to believe they …

Re: Authenticity of AdLib sound

Posted on 2007-01-19, 08:42

in DOSBox General
What's Mame? http://en.wikipedia.org/wiki/MAME http://www.mame.net/ You know, there's this thing called Google ( http://www.google.com ) that allows you to quickly find answers to any 'what is XXX (fill in any word)' questions. Also, I found a page giving driver specifications on the AdLib: http:// …

Re: Authenticity of AdLib sound

Posted on 2007-01-17, 11:35

in DOSBox General
So is AdLib sound authenticity in DosBox beyond the scope of this group? I'm not sure about the current status of the Dosbox Adlib emulation (as it is copied form Mame, and I'm not sure whether a) Mame has recently updated and b) Dosbox has incorporated the changes), but 0.65 wasn't quite accurate. …

Re: Ctrl+Break == no go in either QBasic or C++ 3.1

Posted on 2006-12-07, 10:15

in DOSBox General
The following will need to be done to get ctl-break to work: This seems like a manageable task. Maybe someone can pick it up. This raises an interesting (and perhaps often asked) question: couldn't we have a list of these 'todo' tasks on the DOSbox developers page, so that someone willing to devote …

Re: Ctrl+Break == no go in either QBasic or C++ 3.1

Posted on 2006-12-06, 14:02

in DOSBox General
Well there's a lot more around it than "just checking on dos in/out functions". If you need it, boot dos. Sure, why not make DOSbox a PC emulator, and make booting DOS obligatory for it to work, even easier! :) Really wd, lighten up a bit, it's not a personal assault on you every time someone …

Re: In Search Of The Most Amazing Thing

Posted on 2006-12-06, 14:00

TIMER is a read-only variable in GWBASIC returning the current system time as a floating point number. Actually, that's the TIMER function. There is also a TIMER statement, which sets up timers. The function is the more likely candidate, but I'm not really sure what old GWBASIC does with these in …

Re: In Search Of The Most Amazing Thing

Posted on 2006-12-06, 13:53

Well but JEmlay said that the game came with a basica.exe (GWBASIC) that worked on his old pc. I couldn't find any gwbasic version that worked with the game. Later basica versions must have included a copy of the ROM in case the ROM wasn't present. I remember both BASIC.EXE and BASICA.EXE being …

Re: Ctrl+Break == no go in either QBasic or C++ 3.1

Posted on 2006-12-05, 15:37

in DOSBox General
Ctrl-break checks are woven into the dos in/out system, and as dosbox is missing those checks (and i don't see any easy way how to add them) it doesn't work no matter how you remap keys. You could try booting msdos or freedos inside dosbox. It shouldn't be too difficult to add? INT9 should cal …

Re: In Search Of The Most Amazing Thing

Posted on 2006-12-05, 11:21

I haven't tested to see what happens exactly but it is possible that the code will work, but also sets up a timer, which triggers and causes a problem. (Or maybe it simply never works and the difference was the result of timing differences in my own actions -- the old BASIC dialect is very …

Re: In Search Of The Most Amazing Thing

Posted on 2006-12-05, 11:05

> why does the game work with the version of BASIC it comes with on a slower machine? If you have such a version of basic why don't you simply use that version in dosbox as well??? BASICA.EXE relies on the original IBM ROM BASIC to be present (the ROM that allowed the original PC to boot into BASIC …

Re: Problem with runnign DOSBox in fullscreen (crashes)

Posted on 2006-10-11, 10:00

in DOSBox General
Ok, I'll try that. Thanks for the advice, and if anybody else had any experience with such a problem, than i would be grateful for some additional info :-) M. Well, you could also try playing with the output settings in the [sdl] section of your dosbox.conf, it's a lot easier than downngrading …

Re: can i change z: to other letter?

Posted on 2006-10-06, 09:47

in DOSBox General
Qbix wrote: by changing the sources of DOSBox. As this creeps up regularly, perhaps it should be placed on the wish list (yeah, I know, again too lazy to check if it's there 😀). Edit: okay, I felt guilty and checked, and I see it's in the FAQ! 😀 JAL

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