I'm not even sure there's a 4:3 mode with my 4K monitor (likely not).

No VGA input either on these new monitors, of course, so you would need active VGA to HDMI/DP scaler/adapter of some sort.

(I assume you mean via hardware and not DOSBox since you're posting in Marvin.)

It will look terrible

candle_86 wrote:

It will look terrible

I believe they should be better, but I would like to see myself how they work. When you have more pixels that human eye can't separate from each other, lower resolutions like 320x200 could be achieved much better than with a 1280x1024 LCD screen. You can't stretch pixels on LCD screens, CRTs are better in this.

The software is the other important part. A 4k screen would be awesome for DOSBox, but the software needs to scale it appropriately. For example I mucked around with Nvidia's Dynamic Super Resolution and DOSBox, and the result is really nice!

4k will be very good for quality CRT emulation like HLSL. The higher resolution the better the accuracy of the emulation.

BTW, thanks Phil for the Dynamic Super Resolution heads up I did not know there was an option for that.
Now I can see how my desktop would look with a 4k resolution.

It looks TINY!

To use it with DOSBox, you set the 4k resolution in the DOSBox config file. The end result is that text for example looks more pleasing.

At a 1080p screen, openglnb results in clearly visible different pixel sizes (so a letter could have a thin bottom, but a thick top part). And opengl looks too mushy.

Agreed, 4K with 24" screen is definitely not recommended. 😁

DSR is a great supersampler + downscaler, it works very good with dosbox, and I can adjust the blurriness to taste.
openglnb, scaler=none, fullresolution=3840x2160, DSR 30%-50% smoothness, looks excellent.

So, has the subject moved to CRT emulation for DOSBox?

In my LG 27UD68, the Ratio sub-menu only offers:
* Wide
* Original
* 1:1

However, I can't use my old VGA stuff yet as I don't have a VGA to HDMI/DP scaler. Are the good ones only the expensive ones (e.g. Framemeister XRGB)? And that's designed for HD/1080p... I'm afraid new 4K-native ones would be even pricier.

Compare that to getting a good 17" LG Flatron CRT (or any other type you prefer) for less than $10 pickup/local -- an option which many/some people still have today.

archsan wrote:

So, has the subject moved to CRT emulation for DOSBox? […]
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So, has the subject moved to CRT emulation for DOSBox?

In my LG 27UD68, the Ratio sub-menu only offers:
* Wide
* Original
* 1:1

Specs on the DELL site say it has D-Sub?

For real? What resolutions become available please? And does the 1:1 mode work under VGA?

?? What Dell 4K has D-Sub?

My LG only has one DP 1.2a and two HDMI 2.0 ports. No D-Sub or DVI. 🙁

You mean this one?
http://www.extremetech.com/electronics/229058 … nt-1080p-panels

My bad...

I searched your model number:

http://www.lg.com/us/monitors/lg-27UD68-W-4k-uhd-led-monitor

Click on Tech Specs and it shows D-Sub?

Odd

Ahaha, right... that must be a mistake on their part... as you can see on the backside photos.

However, thanks to your mentioning DELL above, we found out about this: VGA port on a 43" 4K (IPS) monitor. There is hope!
$1350 MSRP though, I won't be buying it anytime soon. 😁

http://accessories.us.dell.com/sna/productdet … en&sku=210-AHSQ
(there's a picture of the ports, it even has serial port!)

So I dug a bit deeper. The Benq 1440p screens for example don't even list 1600 x 1200 as a resolution 🙁

Now over DVI that isn't an issue because the GPU can scale it, so under XP you can happily play Far Cry 1:1 pixel mapped.

But VGA is a no go.

This one by AOC is probably the only 4K with D-Sub that is fairly priced.
http://aoc-europe.com/en/products/u2879vf
It has "Aspect Ratio" mode but most definitely will not show 640x400 correctly (4:3), but it will do 70Hz correctly at that resolution.

Nothing beats a CRT for 640x400 70Hz 4:3 mode, where practically all DOS games at.

Buuuu:

Video content supporting resolution:
(1) VGA: 1920 x 1080/60Hz (Maximum)
(2) DVI: 1920 x 1080/60Hz (Maximum)

The 4K pixel density and a good scaler is what matters, not the maximum input VGA resolution, there is no DOS game in 1920x1080.
A 4K monitor with D-Sub input, 4:3 option in scaler and 70Hz with the right modes is what we are looking for.

VGA or DVI can't do more than 1080p in 60Hz, not enough bandwidth.

No I want 1600 x 1200. It's the top resolution for a lot of games from the Windows 98 era.

DOS gaming I'm already happy to be honest.

Yeah top model CRTs supporting 1600x1200 @85Hz or better aren't as easy to find. Usually are in the range of 19" and above too (heavy).

PhilsComputerLab wrote:

No I want 1600 x 1200. It's the top resolution for a lot of games from the Windows 98 era.

DOS gaming I'm already happy to be honest.

Shame your not local, I've got a 24in IBM in storage, its top resoultion is 2560x2048. It does have some heft to it, I tried to use it on a modern computer desk, and it cracked the 1in plywood instantly.