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Re: MF-001 Adlib Clone jumper settings, thoughts has anyone

Posted on 2022-11-24, 17:53

in Marvin \ Sound

in Marvin \ Sound

Thanks. And which which? And need some init, like soundblaster cards? If you look at the PCB layout, you can see that only the outer pins are connected. To figure out which connector is for input and which for output without analyzing the layout, you can simply connect the speaker to one of them. …

Re: A small black resist0r fell of my Voodoo 3 3500

Posted on 2022-10-12, 17:27

in Marvin \ Video

in Marvin \ Video

GodModule wrote on 2022-10-11, 18:57: A small black rectangle (SMD?) resistor marked with 150k fell of the back of my Voodoo 3 3500, is it screwed? Nah, it's typically soldered. 😜

Re: Did VGA (EGA?) standard lose support for CGA Mode 5h color palette with light red color?

Posted on 2022-09-24, 14:39

in Marvin \ Video

in Marvin \ Video

AFAIK, the early CGA cards only had a very limited number of different shades of gray on the composite output. Maybe cyan and magenta would have resulted in the same shade? Incidentally, both effects can be restored on an EGA card using a TSR driver, because EGA conveniently supports four shades of …

Re: SAA1099 as 4-bit DAC and CMS/GameBlaster digital sound output

Posted on 2022-07-06, 17:18

in Marvin \ Sound

in Marvin \ Sound

And for the eventual log table lookup use the ever popular xlatb.

Re: CGA intensity

Posted on 2022-05-16, 17:19

in Marvin \ Video

in Marvin \ Video

Technically, an RGBI monitor is free to interpret the meaning of “high intensity red” whichever way it wants. You could therefore try to find an RGBI monitor that only boosts the brightness of active primary colors. Aside from that, modding appears to be your only option.

Re: Displaying CGA/EGA graphics on an MDA monitor - comparison of ATI Small Wonder and EGA Wonder 800+

Posted on 2022-04-30, 14:25

in Marvin \ Video

in Marvin \ Video

The oscilloscope view in the thread that MMaximus linked to looks a lot like low-pass filtered PWM. (Low-pass filtered by the oscilloscope, in this case.)

Re: Displaying CGA/EGA graphics on an MDA monitor - comparison of ATI Small Wonder and EGA Wonder 800+

Posted on 2022-04-29, 19:30

in Marvin \ Video

in Marvin \ Video

I do have access to both cards, but not to a monochrome monitor and unfortunately, the only logic analyzer I have is a cheap 24MHz dongle. Does any kind of horizontal pattern show up on a closeup of the monochrome screen in areas that should technically show a solid color?

Re: Displaying CGA/EGA graphics on an MDA monitor - comparison of ATI Small Wonder and EGA Wonder 800+

Posted on 2022-04-28, 20:49

in Marvin \ Video

in Marvin \ Video

The thing is that the “Wonder” cards are supposed to be able to display 16 different shades on an MDA monitor. That, however, is clearly not possible with just two bits and a constant signal. I therefore suspect that we are looking at a combination of traditional 2BPP graphics and some primitive …

Re: Displaying CGA/EGA graphics on an MDA monitor - comparison of ATI Small Wonder and EGA Wonder 800+

Posted on 2022-04-28, 18:42

in Marvin \ Video

in Marvin \ Video

One thing that I am curious about is what the signal looks like. My informed guess is that some sort of PWM is involved, but the exact parameters would be interesting.

Re: Mod Master XT 1.0 Released : Play .MOD, .XM and .VGM on a 8088 4MHz

Posted on 2022-04-18, 13:42

in Marvin \ Sound

in Marvin \ Sound

Cannot VGM files be played on a Soundblaster? Mod Master outputs an error when I tried it. Can you put the .vgm files here so that I check ? What is the error message ? It's the VGM you put in the zip file. GB_MONI1.VGM Audio card is a Soundblaster 16PnP, my PC is an Amstrad PC2086 XT 8MHz. The …

Re: Newly written driver(s) for Sierra's Creative Interpreter – Starting with Plantronics ColorPlus

Posted on 2022-04-06, 17:17

in Marvin \ Video

in Marvin \ Video

RetroBard wrote on 2022-04-06, 15:17: I was wondering if Thexder would be able to use the Plantronics driver? Thexder (never heard of it until today) is not an SCI game. The simple answer is therefore: “no”. Even if it did work, it would still only run at half the speed of the CGA version.

Re: The 3 voice sound PCjr/Tandy 1000 games patching thread!

Posted on 2022-03-27, 11:48

in Marvin \ Sound

in Marvin \ Sound

alextpp7 wrote on 2022-03-25, 12:10: Hi, Why is the FTP site not working ? Is there anywhere else to access the patches ? BTW, thank you for the hard work ! Are you sure that you actually tried to access it? Many web browsers have abandoned FTP support in recent years.

Re: Replicas of Covox Speech Thing, FTL Sound Adapter and SiliconSoft SoundJr

Posted on 2022-02-26, 21:44

in Marvin \ Sound

in Marvin \ Sound

If combined with an OPL3 FM chip, perhaps the STM32 would even be powerful enough to emulate both OPL3LPT and Digispeech DS3xx, allowing the Sound Blaster emulator and Windows 3.x drivers for the Digispeech parallel port products to be used with this hypothetical universal LPT sound device. It …

Re: Replicas of Covox Speech Thing, FTL Sound Adapter and SiliconSoft SoundJr

Posted on 2022-02-21, 18:45

in Marvin \ Sound

in Marvin \ Sound

if it's a passive DAC, can it just work with the same drivers & softwares as the covox speech thing? It is fully Speech Thing compatible. The only difference is the additional functionality, namely that it can be detected by software and that it has a joystick port. does the serial port have full …

Re: Newly written driver(s) for Sierra's Creative Interpreter – Starting with Plantronics ColorPlus

Posted on 2022-02-21, 18:33

in Marvin \ Video

in Marvin \ Video

I just recently found this topic. I was wondering how hard it would be to make a PCPplus driver for the Lucasarts games? I have actually looked at "The Secret of Monkey Island" before. The main problem I see is that there aren't any drivers, at all. Presumably it is all in monkey.exe itself, which …

Re: CVX-2 : covox adapter

Posted on 2022-02-07, 21:12

in Marvin \ Sound

in Marvin \ Sound

I'm thinking of making a CVX5, any suggestions for changes/improvements compared to CVX4 ? CVX5 would be available in larger amount, it will take a few months though You can gladly take my https://www.vogons.org/viewtopic.php?f=62&t=65327&start=60 as inspiration and e.g. put a PCB with SMD …

Re: GLX Player the only XT player ? Check Mod Master...

Posted on 2022-01-31, 17:42

in Marvin \ Sound

in Marvin \ Sound

FreddyV wrote on 2022-01-31, 13:35: It is not possible to change the font in CGA/EGA Actually, it is possible in EGA text mode.

Re: Old CGA monochrome monitor color fidelity

Posted on 2022-01-24, 17:15

in Marvin \ Video

in Marvin \ Video

Does the system still exist, i.e. can you find out which type of video card is installed? There were indeed a few any-standard-on-any-monitor cards that could display CGA graphics on an MDA monitor. For instance, ATI had several in its "Wonder" series of cards.

Re: Can an EGA card produce a double-scanned video signal?

Posted on 2022-01-24, 13:57

in Marvin \ Video

in Marvin \ Video

My current hypothesis is that EGA cards that do not have a 16Mhz clock generator (like the one my CGA card also has), are not capable of creating single-scan video. The EGA cards I know can produce single-scan video all have such a generator. That sounds fishy to me. IIRC, the 16.257MHz pixel clock …

Re: Can an EGA card produce a double-scanned video signal?

Posted on 2022-01-23, 20:42

in Marvin \ Video

in Marvin \ Video

I am not familiar with that particular card, but the ATI EGA Wonder 800+ that I have is basically a VGA card minus the RAMDAC. If yours is a similarly late EGA card that actually uses a VGA chip, the double-scanned 400-line EGA mode is essentially a free bonus.

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