I thought about doing this at one point cuz i to have a sony bvm that i use for my N64, SNES and Sega Genesis and the coolers on the bvm look amazing.

If you do get this going please share what parts and cables you used to make this work.

Heres a few games id like to see: Wolfenstein 3d, doom, im also curious about these non dos games as well, Unreal tournament and Age Of Empires.

Here's a thread I started on running S-Video output directly into by Sony PVM. Some games look great!

Anyone use the TV Out from videocard?

Playing Descent on the PVM with a Hanaho is a great experience!

BubbaMc wrote:

What I plan to do is use a TSR to convert the video mode to 15kHz in order to output a true 200p signal. I'm confident this will work as one of the guys over at the Shmups forum has had success, however he only tried a few games and left it at that.

It's not a "true 200p" signal, unless your PVM/BVM/XBR supports 70Hz vertical retrace, which I suspect it doesn't.

Drivers like VGA-TV and Arc-mon are hacks, not something I'd want to rely upon for my "day to day" DOS gaming.

Good luck to you though. I've been able to DOS game on my 29" PVM using my Sega Teradrive, which has a pseudo-CGA mode capable of displaying mode 13h and mode X games on 15kHz displays (the VGA chip is a WD90C10). It cannot display 640x480 content in this mode, however, which I suspect the aforementioned software hacks might be capable of pulling off.

SquallStrife wrote:

It's not a "true 200p" signal, unless your PVM/BVM/XBR supports 70Hz vertical retrace, which I suspect it doesn't.

You're right, it doesn't. Also, VGATV only supports a 60Hz (or 50Hz) output which is disappointing.

SquallStrife wrote:

Good luck to you though. I've been able to DOS game on my 29" PVM using my Sega Teradrive, which has a pseudo-CGA mode capable of displaying mode 13h and mode X games on 15kHz displays (the VGA chip is a WD90C10). It cannot display 640x480 content in this mode, however, which I suspect the aforementioned software hacks might be capable of pulling off.

Very interesting! Did you notice any screen tearing or scrolling issues due to the 60Hz refresh? BTW anything 640x480 native I'll display on a regular monitor. Going to try and setup 2 graphics cards, one AGP and one PCI so I can switch between modes easily.

The 29" PVM and Teradrive are two pieces of equipment I'd love to own one day.

It's nearly the same effect when I use my 1084S while playing with the tandy. 100RL/HD
especial the red is much more intense. (battlechess)

I'll be monitoring this thread in case something new comes out of it, I'd love to use my 1084 for DOS stuff 😀

About 20 years ago, there was this VGA to TV driver by Paulo Sergio Coelho, most likely can be still found. Worked fine for me.

VGA to 1084 might be really cool 😀

There are schematics out there to convert HSYNC+VSYNC to CSYNC so at least this is not a problem. I'm more concerned with the 70Hz refresh rate. You might want to select a monitor that can manage multiple refresh rates, like a European TV. As they can do both 50 and 60Hz, there is a chance it's a range of accepted rates, and you may be able to display something outside of it. If it does, the picture would appear fine and that would be the end of it. If it doesn't and you're lucky, the picture would be vertically challenged and you would want to dive into the service menu to correct the aspect ratio. Setting the picture is annoying and you want to dedicate a display to your PCs. If you're unlucky, the picture would be rolling and there would be nothing you can do about it.

Ist it just simply this cable and the tsr-driver?

jarreboum wrote:

There are schematics out there to convert HSYNC+VSYNC to CSYNC so at least this is not a problem. I'm more concerned with the 70Hz refresh rate. You might want to select a monitor that can manage multiple refresh rates, like a European TV. As they can do both 50 and 60Hz, there is a chance it's a range of accepted rates, and you may be able to display something outside of it. If it does, the picture would appear fine and that would be the end of it. If it doesn't and you're lucky, the picture would be vertically challenged and you would want to dive into the service menu to correct the aspect ratio. Setting the picture is annoying and you want to dedicate a display to your PCs. If you're unlucky, the picture would be rolling and there would be nothing you can do about it.

VGATV will lock the output to 60Hz, so it'll work but may create scrolling or tearing issues. To fix the aspect ratio, tweaking the vertical size is all that would be needed,

The ideal monitor for DOS would be a Wells Gardner, these are the only ones I know of which will sync from 50Hz to well beyond 70.

dr.zeissler wrote:

Ist it just simply this cable and the tsr-driver?

No, definitely not this cable, it reads in the PDF you linked.

Usually for PC VGA output to TV SCART input you need to take in TTL level separate syncs (H+V) from VGA and combine them to video level composite sync (about 0.3Vpp into 75ohms) and feed it to TV. Video goes through the RGB interface directly. The Epanorama circuit with XOR gates and transistors did the job fine. Some VGA cards may be able to output TTL level composite sync directly, but that's another story.

BubbaMc wrote:

The ideal monitor for DOS would be a Wells Gardner, these are the only ones I know of which will sync from 50Hz to well beyond 70.

Well, the ideal monitor for DOS is a 31kHz VGA monitor. 😉

Oh and only signals from a CGA or EGA card can possibly work with a simple cable and a TV. VGA is minimum 400 lines, mode 13h is rendered at 200 lines but then line-doubled by the graphics card to output 400 lines. In order to display VGA on a TV, you want to discard every odd line to get the original render back. For that you need a special device, like an Extron http://scanlines.hazard-city.de/

Either that or a 20-year old TSR that reprograms registers to output 15kHz without line doubling.

Has anyone used an ArcadeVGA video card with a BVM? My PVM doesn't accept VGA, or I would have tried it (I have an old AGP ArcadeVGA that was based on a Radeon 7000 or something).

Jepael wrote:

dr.zeissler wrote:

Ist it just simply this cable and the tsr-driver?

No, definitely not this cable, it reads in the PDF you linked.

Usually for PC VGA output to TV SCART input you need to take in TTL level separate syncs (H+V) from VGA and combine them to video level composite sync (about 0.3Vpp into 75ohms) and feed it to TV. Video goes through the RGB interface directly. The Epanorama circuit with XOR gates and transistors did the job fine. Some VGA cards may be able to output TTL level composite sync directly, but that's another story.

I recommend the Extron RGB 203xi for sync processing (as a bonus it does VGA input switching and pass-through also).

boxpressed wrote:

Has anyone used an ArcadeVGA video card with a BVM? My PVM doesn't accept VGA, or I would have tried it (I have an old AGP ArcadeVGA that was based on a Radeon 7000 or something).

Your ArcadeVGA outputs a 15kHz signal that the PVM (and BVM) loves.

Easiest solution:
1. Regular VGA monitor cable between your video card and sync processor
2. Extron 203xi sync processor (or other Extron models)
3. BNC->BNC RGB video cable between the sync processor and your PVM

SquallStrife wrote:

BubbaMc wrote:

The ideal monitor for DOS would be a Wells Gardner, these are the only ones I know of which will sync from 50Hz to well beyond 70.

Well, the ideal monitor for DOS is a 31kHz VGA monitor. 😉

15kHz progressive beats line-doubled VGA every single time 😉