Regarding Jailbars on XRGB-1

[redcage]

Hi all!

I recently picked up an XRGB-1 for cheap. I have an XRGB-2 as well and was quite impressed with it and since I am currently venturing in the world of Superguns and PCB, I thought the XRGB-1 would be a good addition.

While I haven't been able to get it to work with the supergun yet, I been testing it with a Super Famicom and a PS1 and I noticed that there seemed to be a bit of a Jailbar effect on the screen.

Is this normal ? I been running it off an LCD but I have yet to run it off a CRT yet.

Thanks!

[amaradona]

I have the same issue with saturn,sfc and pc crt.
Never been able to remove these jailbars.

[redcage]

I have the same issue with saturn,sfc and pc crt.
Never been able to remove these jailbars.

I see! I had thought that it might be a dud ! No worries, I just have to sit further away and the SLG3000 Scanline generator does mask it a bit.

[amaradona]

I have the same issue with saturn,sfc and pc crt.
Never been able to remove these jailbars.

I see! I had thought that it might be a dud ! No worries, I just have to sit further away and the SLG3000 Scanline generator does mask it a bit.

It is a shame because IMHO it is a much better device than the xrgb 2.

[Xyga]

The XRGB-1 lacks built-in fake scanlines though, and scanline generators don't completely make up for it as they don't produce real shades of black.
The DISPL at least features this though at 100% intensity, which some people might not like.

Then there's the huge difference in terms of compatibility between the 3 dip switches and 4 dip switches revision of the XRGB-1; the former is apparently as flexible as the DISPL, but the latter is much much less compatible with arcade boards.

Regarding the the XRGB-2, I wouldn't say it's inferior in every area, the linedoubling is blurrier, but color reproduction is definitely better more balanced with better handling of gradients.
It's also completely plug-and-play while the XRGB-1 and DISPL demand some work on the input (had to modify my scart>jp21 with a resistor to add a power switching line, otherwise the DISPL couldn't even detect signals).

Honestly the only two things about the X1 & DISPL that are really superior to the X2 are the linedoubling quality and often more stable/less noisy signal without adjusting.

The old Micomsoft doublers all have their pros and cons yeah, the OSSC when it's ready should settle everything and put them all to sleep. ^^

[amaradona]

I feel the xrgb 1 is much cleaner that the xrgb 2.The fact also that it is outputting a 640x480 signal is a real plus for me.
On a PC crt I do not use scanlines anyway as the contrast is taking a hit on an already dimmer screen than a consumer CRT.
You are right though, Marqs device will soon settle scores in a definitive fashion.

[redcage]

Regarding the the XRGB-2, I wouldn't say it's inferior in every area, the linedoubling is blurrier, but color reproduction is definitely better more balanced with better handling of gradients.
It's also completely plug-and-play while the XRGB-1 and DISPL demand some work on the input (had to modify my scart>jp21 with a resistor to add a power switching line, otherwise the DISPL couldn't even detect signals).

I haven't been able to get it to work with my supergun, the consoles seems fine though. I think I read in some old post abt having to do some rewiring of some sort on the PCB to get it to switch to RGB. What would that be all about ?

[Xyga]

Well the DISPL (which I assume is very similar to the XRGB1) works directly with my supergun without any modifications (Sigma Raijin with JP-21 RGB cable), but the Euro Scart consoles with an adapter (Scart>JP21) consoles wouldn't, so I had to modify the adapter (Fudoh guided me in another thread, I'll tell you if I find it)

If your supergun is using JP-21 RGB for output, the XRGB-1 should work...
The problems I can think of;
- the XRGB1 is a 4 dip-switches version and is not compatible with your current pcb's
- the AC power adapter is not good (maybe too low amperage ?)
- your supergun's video output cable is lacking a signal/wire and therefore the XRGB1 does not detect the signal. It would require a modification (can't help you here I don't know much about JP21 RGB cables)

Sorry, just random ideas ¯\(°_o)/¯

[Fudoh]

Problem on the DISL was that it requires a switching voltage, which is not neccessary on all the later XRGB units and often just isn't connected on either the RGB cable or EU/JP adapters.

On JP21 RGB cables we're talking pins 11 and 16. 5V to pin 16 and from there through a resistor to pin 11. Since the DISPL came after the XRGB-1 I would assume that the XRGB-1 requires this as well.

[Xyga]

^ Thanks. I did the mod on my scart>jp21 adapter as you instructed then, and never had any more issues with the DISPL since.

Hopefully indeed it is the same with the XRGB1.

[redcage]

Well the DISPL (which I assume is very similar to the XRGB1) works directly with my supergun without any modifications (Sigma Raijin with JP-21 RGB cable), but the Euro Scart consoles with an adapter (Scart>JP21) consoles wouldn't, so I had to modify the adapter (Fudoh guided me in another thread, I'll tell you if I find it)

If your supergun is using JP-21 RGB for output, the XRGB-1 should work...
The problems I can think of;
- the XRGB1 is a 4 dip-switches version and is not compatible with your current pcb's
- the AC power adapter is not good (maybe too low amperage ?)
- your supergun's video output cable is lacking a signal/wire and therefore the XRGB1 does not detect the signal. It would require a modification (can't help you here I don't know much about JP21 RGB cables)

Sorry, just random ideas ¯\(°_o)/¯

It's the 3 dip-switch model and I am running off an MVS, I should be able to get a PCB to test soon.

I doubt it's the AC power. But yes it could well be the supergun video output cable!

Thanks for the suggestion anyway !