Monitors supporting vsync_adjust=2

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Sorgelig
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Monitors supporting vsync_adjust=2

Postby Sorgelig » Wed Apr 10, 2019 4:54 am

Let's find the best monitors with perfect sync in vsync_adjust=2 mode.

What i'm personally looking for is monitor 8-10 inches which doesn't do a frame conversion.
I've bought so monitors on ebay. One is 8" 4:3, another is 10" 16:9. Both support perfect sync. 8" has rubbish panel - claimed to be a IPS, but what i see is TN. 10" looks like IPS. But even 10" has very awful colour ramp. So i either has to make it bright with brighter colours vanished, or with normal brightness with dark colors become black(invisible).

recently i've bought Gechic On-Lap 1101P monitor. It has perfect IPS non-glare panel. It perfectly sync to vsync_adjust=2 in near 60Hz refreshes, but complete rubbish in 50Hz mode making awful kind of conversion of frame rate. Unlike other monitors i have, it support any 15Khz/31Khz modes i've thrown on it over VGA. For very strange reason it doesn't support 4:3 mode over VGA making VGA input less useful.

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Re: Monitors supporting vsync_adjust=2

Postby jayp76 » Wed Apr 10, 2019 8:32 am

I bought this one a while ago as portable monitor for my ps4, because it is nicely light and flat.
I use it now mainly for MiSTer now. I never observed any tearing, and it is working with vsync_adjust=2 (except ao486).
I use only HDMI.


https://www.amazon.de/gp/product/B078F6X9YT/

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Re: Monitors supporting vsync_adjust=2

Postby mahen » Wed Apr 10, 2019 9:18 am

@jayp76 : does it work with 50 Hz cores too ? Just asking because it seemed to work properly with my BenQ W1060 projector (even 50 Hz Megadrive) until I tried the Amiga core where it worked for a couple of seconds then switched between several modes constantly (the projector displayed alternatively 51 Hz and 50 Hz for some reason).

I don't know this brand, do you know if those panel are used for others ?

I like the fact it's pretty small. Low res + scanlines probably look very little pixellized.
Amiga user non-stop since 1993 ;-)
Win 1997-2001 / MorphOS 2002-2005 / Linux since 2005

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Re: Monitors supporting vsync_adjust=2

Postby jayp76 » Wed Apr 10, 2019 1:54 pm

@mahen
I don't know the brand or if the display is used somewhere else.

I set the Amiga Profile to PAL. No problems observed when booting Amiga Desktop and Games.
Here are the infos of MiSTer on the picture:
The monitor itselft reports 51Hz
IMG_20190410_155018.jpg
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Re: Monitors supporting vsync_adjust=2

Postby Lightwave » Fri Apr 12, 2019 1:44 am

What I'd really like to find is a currently available North American monitor that supports 50hz.

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Re: Monitors supporting vsync_adjust=2

Postby DrOG » Fri Apr 12, 2019 4:08 am

I use a BenQ BL-912, it has VGA and DVI inputs, and supports 15kHz as well...
I wrote about it earlier here:
viewtopic.php?f=115&t=26963&hilit=bl912&start=75#p318421
Purchased it 2 years ago, not sure if it's still available or not as new product...

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Re: Monitors supporting vsync_adjust=2

Postby amadama » Sat Apr 13, 2019 3:56 am

I have been looking for a similar size monitor to build a portable Mister device.
I am looking for a 4:3 screen with IPS.
The following has an LG panel which is similar to what is used in various tablets:
https://www.amazon.com/2048x1536-Retina ... B01N6C5X3O

I am hesitant to buy it because it might be too big (9.7") and the resolution might be too high (2048x1536)

This other one is a bit bigger and has touch-screen (don't care about this):
https://www.amazon.com/Touchscreen-12-3 ... MKHB39RMK2

Also 4:3 and 1600x1200 resolution. Expensive at $169 though.

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Re: Monitors supporting vsync_adjust=2

Postby Sorgelig » Sat Apr 13, 2019 5:58 am

amadama wrote:I have been looking for a similar size monitor to build a portable Mister device.
I am looking for a 4:3 screen with IPS.
The following has an LG panel which is similar to what is used in various tablets:
https://www.amazon.com/2048x1536-Retina ... B01N6C5X3O

I am hesitant to buy it because it might be too big (9.7") and the resolution might be too high (2048x1536)

This other one is a bit bigger and has touch-screen (don't care about this):
https://www.amazon.com/Touchscreen-12-3 ... MKHB39RMK2

Also 4:3 and 1600x1200 resolution. Expensive at $169 though.

Both aren't good for MiSTer due to resolutions.

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Re: Monitors supporting vsync_adjust=2

Postby brNX » Sun Apr 14, 2019 10:36 am

Hi

for my dev monitor I'm using one that I built from a 15.1"(?) laptop lcd (1366x768) with one of those ebay/aliexpress lcd controller boards, something like this https://www.aliexpress.com/item/LCD-Controller-Board-HDMI-DVI-VGA-Audio-PC-Module-Kit-For-15-6-Inch-Display/32762452822.html, everything I tried has worked with vsync_adjust=2, the board also accepts higher resolution input and downscales it to 1366x768. Sound is also fine.

Cheers

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Re: Monitors supporting vsync_adjust=2

Postby Milongero » Tue Apr 16, 2019 9:14 am

Hello,
If you want to make the MISTer wearable-
maybe the MISTer could also be shipped into the Pi-Top
Laptop-case

Greetings Milo

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Re: Monitors supporting vsync_adjust=2

Postby Sorgelig » Tue Apr 16, 2019 10:13 am

Milongero wrote:Hello,
If you want to make the MISTer wearable-
maybe the MISTer could also be shipped into the Pi-Top
Laptop-case

Greetings Milo

you are a year late:
https://github.com/MiSTer-devel/Main_Mi ... /Pi-Top-v1

No idea in which end it can be called as "wearable".

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Re: Monitors supporting vsync_adjust=2

Postby Locutus73 » Tue Apr 16, 2019 2:50 pm

Sorgelig wrote:No idea in which end it can be called as "wearable".


Something like this :lol:
Image

My wet dream is having a "custom" MiSTer with the motherboard rearranged to fit something like a GPD Win
Image
How cool would be that? :shrug:

Regards.

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Re: Monitors supporting vsync_adjust=2

Postby Sorgelig » Tue Apr 16, 2019 3:41 pm

Locutus73 wrote:My wet dream is having a "custom" MiSTer with the motherboard rearranged to fit something like a GPD Win

GPD Win is large enough to fit DE10-nano board. You will need to make a bottom cover deeper and of course you will need to adapt the internal input/output devices :)

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Re: Monitors supporting vsync_adjust=2

Postby Locutus73 » Tue Apr 16, 2019 3:56 pm

Sorgelig wrote:
Locutus73 wrote:My wet dream is having a "custom" MiSTer with the motherboard rearranged to fit something like a GPD Win

GPD Win is large enough to fit DE10-nano board. You will need to make a bottom cover deeper and of course you will need to adapt the internal input/output devices :)


If I was able... but if you want a new project for your spare time if you are getting bored, I can ship you my old GPD WIN (first model, collecting dust) for a FrankenMiSTer portable... :lol:

Regards.

Locutus73

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Re: Monitors supporting vsync_adjust=2

Postby Sorgelig » Tue Apr 16, 2019 4:37 pm

I have GPD Win 2, but no way i will butcher it :)

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Re: Monitors supporting vsync_adjust=2

Postby amadama » Tue Apr 16, 2019 6:40 pm

What is the real difference between vsync_adjust 1 vs 2?
Also how to tell if it is working?
I share a pic of screen with display info showing. Currently vsync_adjust=2 but it shows the same on display with vsync_adjust=1

mister_vsync_2a.jpg
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Re: Monitors supporting vsync_adjust=2

Postby Sorgelig » Sat Apr 20, 2019 11:04 am

Forgot to mention: PiTop v1 (and i believe v2 too) screen support any refresh rate, so vsync_adjust=2 is not a problem there.
The only restriction - it support only single resolution 1920x1080.

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Re: Monitors supporting vsync_adjust=2

Postby SuperBabyHix » Mon Apr 22, 2019 4:01 pm

Had some time to do some testing this weekend with my TV. It's a Panasonic TC-P60U50, pretty much the opposite of a small monitor, sorry.

The TV is unfortunately not 50Hz compatible, so I limited my testing to mostly the NTSC consoles and a few computers in NTSC mode (C64 and Amiga).
Everything seems to be working great. No tearing or judder on any of the cores, even the Game Boy core worked without issue.

One interesting thing is, normally when this TV receives a PAL signal it goes to a black screen with a message of signal out of range. Out of curiosity I tried a PAL system (with both vsync_adjust=1 and 2) and it actually displays an image. The image is way off center and there is a duplicate half screen displayed to the right not to mention the motion is a juddery mess, but still, it does actually display.

I also have an Acer LCD monitor that I need to test, will report back when I do.

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Re: Monitors supporting vsync_adjust=2

Postby Sorgelig » Wed Apr 24, 2019 3:18 pm

Just bought this monitor:
https://www.ebay.com/itm/10-Inch-FHD-10 ... 2806367666

received today and pretty much surprised the quality! Panel is anti-glare, notebook quality. Not the mirror-like crap used in almost any Chinese monitor.
This monitor happily supports vsync_adjust=2 in both PAL and NTSC. Even smooth in 48Hz cores like ZX.
VGA input also supports pretty much everything when it doublescaned (~31KHz). So the same 48Hz doublescan ZX core looks great!

Bonus: the case inside is pretty much empty - so should be able to fit bare DE10-nano inside. So with some customization it's possible to embed it. MiSTer tablet :)

P.S.: i'm not sure if this monitor is the same in every seller selling the same looking monitor.

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Re: Monitors supporting vsync_adjust=2

Postby Newsdee » Wed Apr 24, 2019 6:57 pm

Sorgelig wrote:Bonus: the case inside is pretty much empty - so should be able to fit bare DE10-nano inside. So with some customization it's possible to embed it. MiSTer tablet :)

Even without that, it seems possible to screw a small case in the VESA mount.
That paired a gamepad and a tiny keyboard like this one would be super portable: http://www.riitek.com/product/x8.html

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Re: Monitors supporting vsync_adjust=2

Postby Sorgelig » Wed Apr 24, 2019 8:47 pm

Just noticed that monitor doesn't like frequencies over 60Hz. It's OK up to 61Hz. 62Hz generated by ao486 has small glitch at bottom. 70Hz has a lot of distortion.
Fortunately only ao486 generates higher than 60Hz video. So it should be fine to disable vsync_adjust just for ao486.

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Re: Monitors supporting vsync_adjust=2

Postby Sorgelig » Wed Apr 24, 2019 9:42 pm

Newsdee wrote:
Sorgelig wrote:Bonus: the case inside is pretty much empty - so should be able to fit bare DE10-nano inside. So with some customization it's possible to embed it. MiSTer tablet :)

Even without that, it seems possible to screw a small case in the VESA mount.
That paired a gamepad and a tiny keyboard like this one would be super portable: http://www.riitek.com/product/x8.html

this version is better:
https://www.ebay.com/itm/Genuine-Rii-i8 ... 2550936231
It has separate F1-F10 keys

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Re: Monitors supporting vsync_adjust=2

Postby SuperBabyHix » Thu Apr 25, 2019 3:34 am

Tonight I tested my Acer XF270hu V1 monitor. Apparently there are later revisions of this monitor, so I can't speak for those. This is the original IPS version with the larger bezels.

I tested many of the console and computer cores, both NTSC and PAL and had zero problems. Even ZX spectrum, ao486, and Game Boy synced just fine. I am honestly not surprised by this as this is the monitor I used to use with the original MiST and it almost never had a sync issue.

This is a 1440p monitor, but scaling up from 720p and 1080p both look perfectly fine, even with the scanline filters.

Maybe this is not the right thread, but one question I have is about the ao486 core. The monitor reports the standard 320x200 mode as 72Hz. I know from having several MS-DOS machines that this mode is typically 70Hz, and I do notice some judder with the core. Is this an issue with my monitor or the core?

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Re: Monitors supporting vsync_adjust=2

Postby Sorgelig » Thu Apr 25, 2019 5:50 am

i'm in process of updating the ao486's video. It will output 60Hz in all supported resolutions, so it will be more compatible with TV. And having 60Hz instead of 70Hz is a little better for the core in terms of performance.

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Re: Monitors supporting vsync_adjust=2

Postby SuperBabyHix » Fri Apr 26, 2019 4:55 pm

Sorgelig wrote:i'm in process of updating the ao486's video. It will output 60Hz in all supported resolutions, so it will be more compatible with TV. And having 60Hz instead of 70Hz is a little better for the core in terms of performance.


Awesome, thanks for the update.


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