Re: Real hardware DOS gaming console for HDMI displays

Posted on Today, 14:56

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Those are both normal issues with those apps at high frame rates, which they never reached on typical hardware of their time. The same thing even occurs with DOSBox on current machines if you don't limit the cycles.

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Re: setting hostname

Posted on Today, 12:53

by

by jmarsh

in DOSBox General

in DOSBox General

Sounds like an issue with the app rather than DOSBox. DOS machines don't have any "hostname", and what "authenticated computers list" is the program using?

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Re: 16Bit Color Dos Games

Posted on Today, 01:46

by

by jmarsh

in Marvin \ Software

in Marvin \ Software

Mostly only FMV type games I think, like Zork Nemesis and 7th Guest. Sierra was too conservative to follow suit, Phantasmagoria 2 had 16-bit movies but rendered them using 256 colors under DOS. It's a big jump to go from 8-bit paletted graphics to 15/16-bit hicolor without GPU acceleration unless …

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Re: Intel smashes Ryzen

Posted on Yesterday, 02:33

by

by jmarsh

in Milliways

in Milliways

Do any AMD chips have AVX-512?

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Re: Intel CPU naming

Posted on 2021-01-17, 12:11

by

by jmarsh

in Milliways

in Milliways

No, it doesn't. Go have a look what years SandyBridge (2nd generation) or Skylake (6th generation) came out. Then explain why the latest models start with "11" when it's the year 2021.

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Re: Intel CPU naming

Posted on 2021-01-17, 11:49

by

by jmarsh

in Milliways

in Milliways

That's the generation number, not the year...

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Re: Bought these (retro) hardware today

Posted on 2021-01-17, 05:05

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

How do you call these miniature folding knifes by what name? I couldn't find one similar my father had which is only just 2 inches long, narrow and has iridescent abalone shell sides, my father was very treasured about it and was sad when he lost that knife. If you google for "mother of pearl …

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Re: DOSBox ECE (for Windows & Linux)

Posted on 2021-01-17, 02:42

by

by jmarsh

in DOSBox Development

in DOSBox Development

So, from what you're saying, I'm getting something like 320x200 times 5 equals 1600x1000 and then the extra line is made-up with edge interpolation till it's stretched to 1200 vertically? Honestly, it looks good and I can't tell it from the same thing with the PPP. No, the scaling amounts for each …

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Re: DOSBox ECE (for Windows & Linux)

Posted on 2021-01-16, 23:15

by

by jmarsh

in DOSBox Development

in DOSBox Development

The sharp shader (which I wrote) isn't the same as pixel perfect. It does its best to imitate integer scaling - if the output size is an exact multiple of the input you get perfect integer scaling, otherwise the edge of each input pixel will be interpolated (rather than the entire output which is …

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Re: DOSBox ECE (for Windows & Linux)

Posted on 2021-01-16, 08:32

by

by jmarsh

in DOSBox Development

in DOSBox Development

Opengl doesn't do the trick either. I tried all output modes, actually. I see that the pixels are blurry with opengl, while with openglnb they are razor sharp? Because you've also got the scaler set to normal2x. The sharp shader emulates integer scaling, but you're forcing 2x scaling before it even …

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Re: DOSBox ECE (for Windows & Linux)

Posted on 2021-01-15, 22:26

by

by jmarsh

in DOSBox Development

in DOSBox Development

But when looking up close, the resolution is not 1000 but 960 in height (resulting in some nice 4x5 pixels, and some square 4x4 pixels). So close, but no cigar :-(. You were told to use output=opengl, you used output=openglnb. That's basically the same as using no shader at all. You will not get …

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Re: VESA mode programming from real mode

Posted on 2021-01-15, 14:00

by

by jmarsh

in Marvin \ Software

in Marvin \ Software

You're leaking memory every time you test if a mode is supported.

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Re: DOSBox ECE (for Windows & Linux)

Posted on 2021-01-15, 13:55

by

by jmarsh

in DOSBox Development

in DOSBox Development

Did you try using opengl and the glshader=sharp? I tried glshader=pixel-perfect.glsl OK, so how about trying glshader=sharp like what was suggested instead of something completely different? None of the pixel-perfect patches will give you 4:5, because they are explicitly designed to preserve the …

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Re: DOSBox ECE (for Windows & Linux)

Posted on 2021-01-15, 05:34

by

by jmarsh

in DOSBox Development

in DOSBox Development

Pixel-perfect isn't going to help you run a game at an abnormal pixel aspect ratio (4:5 is neither 1:1 which is what aspect=false implies, nor is it 5:6 which is what aspect=true would give). You would need a custom shader to map the vertices to a 4:3 screen area.

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Re: Quick question of IPX multiplayer games

Posted on 2021-01-14, 18:27

by

by jmarsh

in Marvin \ Software

in Marvin \ Software

Just a switch. IP addresses are used by TCP/IP, not IPX.

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Re: MP3 player on a 386/387?

Posted on 2021-01-14, 03:16

by

by jmarsh

in Marvin \ Sound

in Marvin \ Sound

MP3 decoding doesn't necessarily have to use the FPU, it's possible to use only fixed-point arithmetic.

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Re: Pixel Perfect 1280 x 1000 resolution?

Posted on 2021-01-13, 23:23

by

by jmarsh

in DOSBox General

in DOSBox General

Lemmings uses a resolution of 640x350, not 320x200.

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Re: First game with lan support?

Posted on 2021-01-10, 22:07

by

by jmarsh

in DOS

in DOS

Not really local area network games though, are they?

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Re: scaling 320x200 to 1600x1200 on a 1920x1200 display with hq3x

Posted on 2021-01-10, 02:26

by

by jmarsh

in DOSBox General

in DOSBox General

cjfp wrote on 2021-01-10, 00:49: My guess is the problem got fixed in 0.74-2 by the changes represented by the following line in the changelog: More likely to be commit 4095, "Allow 15/16/32 bpp inputs to the opengl output".

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Re: Dallas DS12887 longevity

Posted on 2021-01-09, 19:01

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

But if I get it cofrectly they're designed in an utterly stupid way that they can not be powered from outside - ie through a powered on motherboard - so when the built-in battery fails they render the motherboard unworkable Generally, no - they just forget their settings. What usually happens is …

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