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Re: Is a soundcard something useful?

Posted on 2018-09-09, 23:57

in Milliways
IMHO, soundcards don't make sense with a modern computer. The analog audio quality of integrated motherboard audio is sufficient for most users. For those with golden ears, you really need to get the DAC outside of the box full of noisy digital circuits and in its own shielded enclosure with quiet …

Re: List of SB games that require IRQ 7?

Posted on 2018-08-31, 18:21

On my old DOS machines, I set the soundcards to use IRQ5 because IRQ7 was already used for the parallel port. I do recall having to configure a lot of games away from the default IRQ7 for sound, even with the BLASTER environment variable set. I never understood why the default sound IRQ was 7 …

Re: Game Versions

Posted on 2018-08-03, 17:35

in DOS
I usually check Moby Games first. For your example, they show the the following versions on their Alien Carnage page: v1.1 Halloween Harry release Shareware v1.2 (as Halloween Harry) v1.0 Alien Carnage release WizardWorks full version CD release and the following patches: Oct 10, 1993 Version 1.1 ( …

Re: Sound Blaster sample-based OST list?

Posted on 2018-01-03, 00:10

I went back and checked, and with the Ultrasound card setup as the music card, it just plays the MIDI soundtrack (probably with the default GUS instruments). Actually sounds better with MIDI output and a good soundfont. Somewhere along the way I got confused about this one. Definitely not MOD/ …

Re: Sound Blaster sample-based OST list?

Posted on 2017-10-19, 21:51

I don't know if this helps, but here's a partial list of DOS games that use tracker (mod) music on the soundblaster (and other soundcards capable of digital audio playback): Abuse Alien Carnage Crusader No Remorse Epic Pinball Extreme Pinball Heartlight Jazz Jackrabbit Lemmings 3 Mystic Towers …

Re: I love all the Win98 lovers we have here!!

Posted on 2017-09-15, 15:52

in Milliways
Always a love/hate relationship with Win98. On the one hand, a fully tweaked Win98SE system was pretty fast, and a decent gaming OS, providing DirectX tech like DS3D and Direct3D. Also, Win98 provided direct access back to DOS for really demanding games. However, it was pretty unstable and crashed …

Re: old opengl-ports of classic shooters

Posted on 2017-09-07, 17:13

in Windows
leileilol wrote: Even the people hosting the forum for it say it's illegal. Interesting -- but if this is a crime, who is the victim? The author is giving it away, and it requires the original game data to run. This does no harm to current sellers of the game (it might increase sales).

Re: old opengl-ports of classic shooters

Posted on 2017-09-07, 04:37

in Windows
It's based on decompiled binaries and GPL'd+BUILDLIC code made closed. Reverse engineering the game engine from decompiled binaries and released source for the Build engine on which it is based does not make it illegal. Since it has been rewritten in Java using the Build source as reference …

Re: Why does the PC speaker have four pins?

Posted on 2017-08-31, 17:55

I believe there are even sound cards that do not require connection to speaker connector, as they sniff the ISA bus traffic for speaker related operations and have matching logic to generate the speaker drive signal onboard the sound card. Yes, the PAS16 does this. Works amazingly well. Very cool …

Re: Why does the PC speaker have four pins?

Posted on 2017-08-30, 19:41

Yes, 388 kHz, misread my calculator. Many soundcards that have a 2-pin PC speaker input will be pinned as INPUT and GROUND. The soundcard biases the INPUT pin and includes any necessary voltage dividers so INPUT can be driven by a common collector driver. Theoretically, you only need one wire …

Re: Why does the PC speaker have four pins?

Posted on 2017-08-30, 18:32

On the original IBM PC, there was no capacitor in series with the DATA signal, only the 33 ohm resistor is in series. There was a 0.01uF capacitor to ground in between the 75475 output pin and the 33 ohm output resistor. This provides a low pass RC filter of 39kHz (assuming an 8 ohm speaker), so it …

Re: Why does the PC speaker have four pins?

Posted on 2017-08-29, 21:48

Just pulled out my original IBM PC Technical Reference manual (3-ring printed version), and it has the following pinout: 1: DATA 2: KEY 3: GROUND 4: +5VOLTS In the schematic diagram, pin 1 is connected to a 75475 output driver through a 33 ohm resistor. Pin 3 is digital ground and pin 4 is +5V logic …

Re: Capacitor replacement rules?

Posted on 2017-08-26, 01:13

in Milliways
Well, my speakers and amplifiers are vintage stuff (JBL 120Ti and Sansui AU-7900, respectively). Last year I was going to buy replacement capacitors for the speakers' crossover, but the JBL 120Ti maintenance manual doesn't say anything about voltage rating and tolerance -only capacitance. Then I …

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