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Re: Emulating MT-32 on an RPi2

Posted on 2020-02-17, 00:20

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)

Posted on 2020-02-11, 21:40

(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)

Posted on 2020-02-11, 20:02

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)

Posted on 2020-02-11, 19:14

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)

Posted on 2020-02-11, 18:36

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)

Posted on 2020-02-11, 16:43

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)

Posted on 2020-02-10, 20:51

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)

Posted on 2020-01-23, 19:23

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 …

Re: New forum suggestions/Feedback

Posted on 2020-01-13, 15:25

in Milliways
franpa wrote on 2020-01-13, 09:06: Also replace the Login button with something other than a Power symbol. The power symbol is web 2.0 / 2003 in very dated way. I think the new norm is a box with an arrow going in or out of it from the side to indicate in/out.

Re: New forum suggestions/Feedback

Posted on 2020-01-11, 23:20

in Milliways
I wonder if part of what some people are seeing is their brain trying to process the patterns on the screen / optical illusion type stuff. If you do the scrolling test, you won't be able to focus on the pattern. The screen will be moving too fast to focus on any "illusions". It definitely is …

Re: New forum suggestions/Feedback

Posted on 2020-01-10, 20:03

in Milliways
Has the monitor done something like that before? I never noticed the behavior before. I use this monitor at work pretty often. After reading the last comment, I went to a variety of pages to check and I didn't notice any flickering. I did an image search for color gradients, and they seem to be …

Re: New forum suggestions/Feedback

Posted on 2020-01-10, 19:44

in Milliways
[…]flickering[…] […]flickering[…] I set up this demonstrator to test different patterns and colours. It’s a big playground so try not to go crazy with the feedback :-) Instead, at the moment please start by answering these things: Using the default (“Reset normal”) settings: 1. On which patterns is …

Re: New forum suggestions/Feedback

Posted on 2020-01-10, 18:42

in Milliways
Could you please take a photo of this? It’s interesting to me how this is monitor is another one which comes with “flicker-less technology” and yet somehow is a big offender. I went into the user menu of my monitor and reset it. It seems to have reduced the flickering to unnoticeable levels, but …

Re: New forum suggestions/Feedback

Posted on 2020-01-10, 16:22

in Milliways
Whoa. I just tried the Old Skool color scheme and it made my monitor freak out! It flickers like crazy and I see visible, yet faint, horizontal lines. Acer R240HY LCD monitor and using Firefox. Pretty bog-standard monitor and I haven't experienced this with any other web pages before. Maybe just …

Re: VIDEO Patch for pixel-perfect scaling (SDL1)

Posted on 2020-01-10, 15:32

in DOSBox Patches
Retroarch supports integer scaling in arbitrary x-y directions. Cores for retroarch are, in most cases, libretro-specific and not main branches. (including dosbox) As long as you output at the right resolution, you get 1:1. It can get complicated tho because, from what I understand, different …

Re: New forum suggestions/Feedback

Posted on 2020-01-07, 22:10

in Milliways
I have an older system that can only run older versions of browsers. Not that this is a solution to your particular issue, but as a stop-gap, have you ever used w3m? It's a text-based browser based on lynx but with multimedia support. I have successfully used it with vogons and logged in, etc no …

Re: Emulating MT-32 on an RPi2

Posted on 2020-01-01, 01:49

in MT-32 General
After adding that line, there's been a reduction (not complete elimination) of the usb audio errors reported. Today, I finally overclocked the pi4 (mildly), and I think that smoothed things out a bit as well, or at least helped with the cpu tradeoff.

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