MiSTer FPGA Forum

Here something that I don’t get, if jammasd has 25 ms of input lag , how can the light gun work? As far as I know the light gun detection works with a perfect sync system between the screen and the gun light beam , offsync just one frame and nothing will be detected, am I wrong ? Go look at what human visual reaction time actually is and you'll se...

Here something that I don’t get, if jammasd has 25 ms of input lag , how can the light gun work?

As far as I know the light gun detection works with a perfect sync system between the screen and the gun light beam , offsync just one frame and nothing will be detected, am I wrong ?

I have a MiSTer in my SEGA New Astro City and it works great! Here is my setup: - MiSTer (by MiSTerAddons) w USB hub and analogue IO. - JAMMACon (by Shane Kiely) with a SEGA Saturn hat (designed to connect a SEGA Saturn controls, RGB, and sound to JAMMA). - 2x RetroPad32 (By BrunoFreitas/Bootsector) which converts the controls to USB. It's not a c...

I am using a JAMMASD in my Astro City for some time and it is horrible when it comes to input lag. It has round about 25ms of lag (~2 frames). I have tested it by myself with the Arduino Test method and you can find the results in this list: https://docs.google.com/spreadsheets/u/0/d/1KlRObr3Be4zLch7Zyqg6qCJzGuhyGmXaOIUrpfncXIM/htmlview In additio...

Found this jammasd info on the mister wiki https://github.com/MiSTer-devel/Main_MiSTer/wiki/Input-devices Which got me confused again, first off is good that mister officially supports jammasd but then all that config instructions are confusing, they are also incoherent with what you can read on the jammasd selling pages, those say that it will be ...

Actually you don't want the JammASD... I just looked more into it, and it turns out that it's PS/2 only... so you need a USB converter. Those converters are the culprits for the lag. Here's a thread that discusses it: https://forum.arcadeotaku.com/viewtopic.php?t=11135 J-Pac is native USB, so looks like a much better choice. Uhmm this jamasd is US...

I have no idea what is all that snac thing but I do know what is multiplexing : so the port is rapidly switching between port 1 and port 2 , as long as it does it super fast it can work as two separated ports. Correct me if I am wrong.

Sorgelig wrote: ↑Sun Aug 30, 2020 9:27 pm Why not just make a simple Arduino Micro converter from bare buttons to USB?
It's guaranteed for lowest possible latency (~1ms) and can be modified for specific needs as it's open source.

Because I would need a video amp ? Not sure I would really need it but apparently I will

Newsdee wrote: ↑Sun Aug 30, 2020 3:10 pm Actually you don't want the JammASD... I just looked more into it, and it turns out that it's PS/2 only... so you need a USB converter. Those converters are the culprits for the lag. Here's a thread that discusses it: https://forum.arcadeotaku.com/viewtopic.php?t=11135

J-Pac is native USB, so looks like a much better choice.

OMG! well spotted

Thanks it’s interesting and doesn’t seem dificult to build one of those Arduino usb things But I would like to simplify going with something like the j pac , been googling a little and I found that j pac is also mapped as keyboard but seems to be no complains about j pac input lag , on the contrary I found this about jammasd http://www.arcadeshop.d...

Thank you all again , with your responses my understanding of the mister world is getting much better I’ve been checking again the JammASD , they call it the European J-PAC , which simplifies things for me a lot LOL, but there is this thing that scares me a little, they say that once connected the pc will see it as a keyboard and all the arcade joy...

Hi Antonio , I would like to understand how a DB9 port with only 9 pins can be read as two separated controllers

Please look at the Sellers section of this forum. There is no single official site, but rather a few vendors that are trusted by the community.

but these vendors need to get the boards from someone... or each one manufacture their own units by a standard mister specs ?

thank you all for the responses

I dont get the J-pac video feature, can't I take the R-G-B-Sync signals from the VGA connector of the Mister IO board?

Hello everyone I'm a little bit confused with all the information im getting from here and there so I would like to ask for some help on these questions: - Where to get a mister kit in Europe ? I have seen a couple of sites but I cant tell which one is the official one... - I am not sure if mister comes with the required software all set up? or you...