/vr/ - Retro Games

Repost in the CRT thread for more action action action

>>2437383

You would use soft15khz or crt_emudriver on a PC. For Dreamcast you need to use a SCART cable. PVMs are 15khz 480i/240p standard definition displays.

>>2448513
And his other 480p consoles work through BNC because...

>>2448521
They don't. He has them in an interlaced mode and doesn't know it, I'm sure. If he tells us the specific model of his PVM we can know for sure though.

>>2448531
Exactly :) I'll agree that's the most likely explanation.

If not, and he has an L5 or something, the sync would seem to be getting corrupted. might be happening to Composite vide but not C-sync?

>>2448513
>>2448540
What we're trying to say, and stop me i'f i'm wong, anon, is that if the PVM only takes 15kHz, just get a SCART cable for the DC, because the signal processing way of doing things (480P/VGA > Downscaler > 240p/480i > BNC > PVM) is needlessly complex, probably costlier, and will at best not give you better picture quality.

>>2448531

What a fucking asshole you are. My PVM is 20L5 and its capable of doing 31khz. It can do 720p and 1080i as well. I AM doing 480p and not interlaced you dipshit.

My question is a genuine one:

How can I properly play DC at 31khz on my pvm? How can I also convert a 31khz signal randomly to 15khz using extron and properly hook it up to my pvm using a vga cable?

>>2448595
Not him, but settle, please. YOU failed to post up the PVM model, and he jumped to the obvious conclusion. If you knew how to fix it yourself, you'd have done so. He'll keep trying to help you, as will I when i get time later tonight, but not if you get abusive.

>>2448595
>How can I properly play DC at 31khz on my pvm?
Either build a circuit to combine the horizontal and vertical sync into composite sync and feed it to the L5's external sync connection OR if you're looking for something simple/that you can buy, an Extron RGB Interface can take the RGBHV that constitutes VGA and turn it into RGsB which your model accepts. You'll need to make sure it's set to RGB Int Sync for this

>How can I also convert a 31khz signal randomly to 15khz using extron
An Extron VSC convertor can take a 31khz+ signal and convert it into 15khz 480i image. Results may vary by game and you'd be much better off either buying a SCART cable or modifying that abomination of VGA box with a switch to change which pins are grounded and as such making it possible to choose whether the Dreamcast is in RGB Mode or VGA mode. I have a feeling you may have to do that anyway, as that box likely has the pins needed for VGA grounded internally and will make a SCART cable relatively useless.

As >>2448485 said, you could have asked in the CRT Thread rather than knocking something of the board and would have likely gotten an answer quicker as well. ALWAYS state you model for questions like this.

>>2448730
>>2448601
Will a 20L5 take 31kHz externally? I was just wondering.

A combiner circuit might not be needed if the sync levels are negative and when combined are under the 4Vp-p recommended limit?

>>2448805
>Will a 20L5 take 31kHz externally?
I don't see why it wouldn't but I don't have one to test it on. They're made to be pretty versatile so I can't see it being much of a problem.

I'm not terribly well versed in the theory end of electronics(or the practical end for that matter), but people have just pushed H and V from PCs together and fed them to PVMs, so it could work. Not proper, but if it works it works I guess.

>>2448816
It does work, yeah. I've done it myself. And with Viletim's easy sync combiner. But it's delivering about 5.7VDC, and most PVM's have stated limit of 4Vp-p. I know older BVM's state higher tolerance, not sure about new ones.

I guess I worry about the longevity of a PVM when constantly doing it.

Could be done using a VGA-5BNC cable, and a T-joiner, if you wanted to do it.

>>2448816
>but I don't have one to test it on.
Actually, rethinking that;
I've gotten double(and triple) images on my SD only PVM while feeding external sync before so a monitor actually capable of scanning at those frequencies should be fine.

>>2448828
I can't remember where I read it, but I read that 5V on their inputs was relatively okay.

>Could be done using a VGA-5BNC cable, and a T-joiner, if you wanted to do it.
I'd need to get a Multiformat PVM/BVM first. No idea how long this M2MDU will stay in "decent" shape, but that's definitely what I'd like to move to once it dies.
I had planned on doing the t-joint method to connect my PC up to it at some point, but using the Extron Interface I bought a month or so ago would be safer.

>>2448845
>I'd need to get a Multiformat PVM/BVM first
I meant him. You know. The OP. The man of the hour. The one either resenting people trying to help him, or communicating like a sulky teenager ;)

>>2448513
>PVMs are 15khz 480i/240p standard definition displays.
Mine goes as high as 720p

>>2448862
If not an L5, can i ask what model it is, please?

>>2448874
It is an L5.

Why do people pay a premium for high definition PVMs when any landfill VGA CRT monitor will do the same thing?

>>2449145
pants on head retarded

>>2449145
Because your wrong. Regular crts don't. That why broadcast monitors exist troll.

>>2449145
if any old vga tube would suffice, then why did sony make hd pvms?

checkmate, atheists

>>2449161
>VGA CRTs are not capable of 1280x720

>>2449241
Who are you quoting?
Are you just like, making up your own imaginary arguments so you can pretend you're winning or something?

>>2449262
So what IS your argument then?

>>2449241
they're not capable of 1080i50

>>2449381
Fewer of them (but still plenty) can

https://www.youtube.com/watch?v=RwJ1Tq6TVKA

there isnt any difference in the RF or SCART compared to all this make beleive 480i

>>2448730

Should I just get a Kenzei or Toro?

>Toro
http://www.beharbros.com/#!toro/cfom

>Kenzei
http://www.beharbros.com/#!kenzei/cvhd

If I can achieve 480p through scart using this box then I think I'd be happy enough.

For 480p to 240p I wanted a component cable'd GBP into an Extron, but the extron only outputs as VGA. Judging by what you said though I'd have to use a modified VGA cable that combines v/h sync into one, but do you think proper VGA to BNC/Scart cables exist? I can use swiss by the way to force 240p but I kind of want to try using an extron as well. I've also failed to get a super emotia 2 so I'm wondering which extron devices will take 480p and output 240p.

>vga to scart
http://www.ebay.ca/itm/VGA-TO-SCART-RGB-ARCADEVGA-CABLE-ADAPTER-1-6M-EUROCONECTOR-for-JAMMA-system-/141663388712?pt=LH_DefaultDomain_0&hash=item20fbcbc428

>vga to BNC
http://www.cablesondemand.com/pcategory/30/category/AVSVGA/URvars/Catalog/Library/InfoManage/VGA_TO_BNC_BREAKOUT_CABLES.htm

>>2448595
>Pretends to be an idiot by posting a rambling question with few details
>Fools everyone
>Get's angry

>>2450336
Why do you want to downsample the Dreamcast's 480p to 240p when it can output high quality digital 240p/480i natively?

>>2450501

>Why do you want to downsample the Dreamcast's 480p to 240p when it can output high quality digital 240p/480i natively?

Nah man. The whole 480p to 240p downscaling is with an extron using my Gamecube's Gameboy player.

For DC I'm more concerned about how to achieve 480p into a PVM. I just don't know which cables to use, and I was primarily wondering if that Kenzei box that outputs SCART does 480p as well.

>>2450793
> Not wasting a $20 Dreamcast 480p cable, wasting a Gamecube's $120 480p cable
> Somehow better

>>2450793
Kenzai is just a sync processor.
Toro has a sync processor as well, but is also a combination VGA/SCART box. A switch lets you got between the two.

>The whole 480p to 240p downscaling is with an extron using my Gamecube's Gameboy player.
Much easier way to go about that is using Swiss. Rather than downconverting 480p to 240p, you can just get it to output 240p in the first place.

>>2450796
>>2450807

>Not wasting a $20 Dreamcast 480p cable, wasting a Gamecube's $120 480p cable

>thinking it's a waste when you can produce thick juicy scanlines and zero pixel bleeding

Yeah, okay. Test it yourself before talking shit.

I don't get these posts. I'm not asking for advice, I'm asking for how to achieve something using said list of methods, and yet you insist on telling me to go another path because it's "cheaper" and "easier." When I've reserved enough cash for a few things then I don't fucking mind wasting it away on shit, and it doesn't work out then I can sell it. I mean, the way you guys answered has just left me really unsatisfied, and I don't fucking need you to tell me how to spend my shit.

>>2449161

SD TVs maybe not, but CRT monitors will support any resolution their scanning rates can handle.

>>2449161
>>2449381

A Sony FW900 supports resolutions up to 2304x1440. That's nearly QHD, on an old radiation cannon.

Cheaper monitors will do less, but even a shitty 19" can manage 1600x1200.

And all of this is without any scaling. All resolutions are native to a CRT.

>>2449405
>>2451419

>1080p50
true
>1080i50
not so much, its about 28kHz horizontal scan so theres a far chance it won't sync to it

>>2451348
You will get better results by having the Gamecube output 240p itself rather than dealing with external scaling devices. The fact that it is cheaper and easier to setup is just a bonus.

If you really must go the Extron route, Fudoh's site will be much more help to you than anyone here:
http://scanlines.hazard-city.de/

>>2451801

What the fuck? I thought the input into Extron was RGB while the output was VGA. I didn't know it was VGA-input and RGB output (although it looks like there's a VGA output too). This kinda changes everything.