VOGONS


First post, by Jackhead

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You maybe know the Problem you want to use a new TFT with your DOS System playing Games.
There serval hardware solutions to get your Signal working 4:3 but the main problem i focus on is to get a 4:3 picture with 70Hz on a correct resolution.

First at all the TFT. I choose a 1920x1200 one with support up to 75Hz.
Reason for this is i also want to use the panel for 1600x1200 Win98/3dfx Gaming.
I know there serval old TFTs like the Ultrasharp 2007FP, but i like to focus here on new Panels.
There also newer TFTs that handle the 4:3 better than other.

Next the GPU. I testet many DOS boards from the timeline, but i got best results with a Voodoo 3dfx gpu.

Because there so much upscalers out there i want to find a solution to get the best picture.
So would be nice if you share here your tests and results.
The start is an Analog Signal.

Goal is: Analog/Digital output 4:3 @70Hz with a "correct" Resolution

I start with my tests so far:

-- OSSC -> Framemeister -> HDMI output
The OSSC shows the 70Hz signal from the VGA.
The Framemeister is able to output the OSSC (x2 Scaler) signal with 4:3 Aspect ratio @60Hz.
No 70Hz, i think the framemeister regulate it to 60Hz. Well its not the best unit for PC signals at all..

-- XRGB3 (results foloow soon)

Please share your results / Hardware you use for DOS Gaming on modern TFTs!

Dos 6.22: Asus VL/I-486SV2GX4 Rev 2.0 1Mb L2 - AMD A5x86 X5 ADZ 133MHz @160MHz - 64MB RAM - CT2230 - GUS ACE - MPU-401 AT - ET4000W32P
Win98SE: Asus P5K-WS - E8600 @ 4,5GHz - Strange God Voodoo 5 6000 PCI @ 66MHz PCI-X - 2GB DDR2 1066 - Audigy 2 ZS

Reply 2 of 3, by Jackhead

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darry wrote on 2021-07-24, 11:50:

Did you try changing the sync setting that I mentioned in your other thread on the Framemeister to see if that allowed 70Hz to work through it ?

I did but only 60Hz, Auto or off nothing changed.

Dos 6.22: Asus VL/I-486SV2GX4 Rev 2.0 1Mb L2 - AMD A5x86 X5 ADZ 133MHz @160MHz - 64MB RAM - CT2230 - GUS ACE - MPU-401 AT - ET4000W32P
Win98SE: Asus P5K-WS - E8600 @ 4,5GHz - Strange God Voodoo 5 6000 PCI @ 66MHz PCI-X - 2GB DDR2 1066 - Audigy 2 ZS

Reply 3 of 3, by darry

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Jackhead wrote on 2021-07-24, 11:51:
darry wrote on 2021-07-24, 11:50:

Did you try changing the sync setting that I mentioned in your other thread on the Framemeister to see if that allowed 70Hz to work through it ?

I did but only 60Hz, Auto or off nothing changed.

Thank you for the info .

As for my setup, I use a Philips 252B9 monitor in 4:3 mode with an OSSC and a Voodoo 3 3000 . I have grouped everything about that setup here Re: Purchasing a 4:3 LCD for DOS/DOSBOX/MISTER/OSSC games? .

In the same system, I also have a Geforce FX 5900 connected over DVI to my Philips 252B9 . That card is forced to 70Hz under DOS using a custom reduced blanking mode ptogrammed into a cheap EDID emulator . See here for details : 70Hz in pure DOS at 1600x1200 (or other) over DVI on an old card (FX5900) with modern monitor is possible