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Re: Emulating MT-32 on an RPi2

in MT-32 General
Aren't there quite a few high quality sound cards for the Raspberry Pi out there that connect through GPIO pins as opposed to USB? Wouldn't that work even better? i haven't pursued that for a couple of reasons: 1) I usually use the GPIO for a 24bit VGA adapter that hooks up to an old RGB monitor …

Re: DOSBox ECE (for Windows & Linux)

(ie: v-stretch knob adjustment)? Yes, I can, but I'm working with large (20" plus) video broadcast monitors that don't have readily accessible pots for vsize. It's an hour long journey to switch it back and forth, and it would have to happen too frequently. I may just have to get separate monitors …

Re: DOSBox ECE (for Windows & Linux)

7F20, if you have an analog CRT PC monitor, can you try driving it a higher resolution than 240p? It's a CGA monitor, so it can't really increase the vertical that high. I have pushed it up to the ~260 line range for some console emulation stuff using modelines, but it can't do 400 vertical. …

Re: DOSBox ECE (for Windows & Linux)

jmarsh wrote on 2020-02-11, 18:42: As I said the result would look the same as a nearest neighbour resize from 320x200->320x240 i.e. every fifth line repeated. I see what you're saying. (facepalm) I guess there isn't any sane way to do it. I give up. Thanks

Re: DOSBox ECE (for Windows & Linux)

How are you scaling back down to 320x40? I'm not, I was hoping there was a solution that could scale the image up and back down. When you go from 1200 -> 240 every 4 out of 5 pixels will be thrown away, leading to uneven scaling. The thought was that uneven integer scaling could be done in x and y …

Re: DOSBox ECE (for Windows & Linux)

James-F wrote on 2020-02-11, 15:37: The 'Sharp' filter prescales then does a bare minimum amount of interpolation to maintain accurate pixel shape. James, would you be able to tell me if this 'Sharp' setting would let me scale a 320*200 game to 1600*1200 and then back down to 320*240? Thanks

Re: DOSBox ECE (for Windows & Linux)

Yep. This is exactly what a "big integer prescale then interpolation" does, and exactly what I am asking for. Low resolution pixel art (DOS games, consoles, etc.) deserves better than a simple blurry bilinear upscale. DOSBox should really get on with the times. This is exactly what I've been …

Re: DOSBox ECE (for Windows & Linux)

NOLFB was created by Ken Silverman since games that used Vesa 2.0 has issues with 2000 and above NTVDM so if the game had a fallback to 1.2 then NOLFB got them working but it also works in DOS as well. This reminded me of the issues with VESA drivers in the 90's. I recently watched this video where …

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