Posts by captain_zzap

Quote from torrind

Unfortunately, I cannot seem to get the right VGA to HDMI adapter to do this - TBF, they've been cheap but I get no display, or I only get to see the ACA500 plus main menu screen and afterwards when booting to Workbench, a blank screen.

Do you have any suggestions on a compatible unit please?

Which device do yo use right now? Does your converter do any scaling itself? Those that scale should be avoided. I've got this Chameleon Core update 9j veröffentlicht C

What resolution is your Monitor? Here Chameleon Core update 9j veröffentlicht I've posted a 1080p 50Hz compatible configuration.

Mea culpa, then it isn´t the scaling.

So with 768x576 the image gets cropped before being scaled?

I really wonder, how the Chameleon would look like through the OSSC in a 400x300 15kHz Mode.

This is how the C0pperdragon YPbPr mod looks like with 288p x4 on the OSSC, no other settings changed:

This is how the TCv2 looks like with 576p x2 on the OSSC, no other settings changed:

In both cases the scaling of the Monitor is disabled.

Quote from Timm

I'm sorry, I cannot answer this question, as I'm not involved in the Chameleon.

Then probably Tobias is the right person to ask?

Quote from JJXB

3. Dialing in sync timings has been mostly guesswork for me at the moment and I'm kind of looking for a sanity check on if it's just me.

Optimal timings on the side of the ossc would result in a integer scaled/pixel perfect image. But you probably won’t get that at this time from the TC as it itself scales the image via nearest neighbor, but not in integers, I assume. The result are not perfectly even pixels. Higher resolutions lower the visibility of this effect.

Which resolution does your TC output to the OSSC?

Timm What ist the exact framebuffer size of the C64 core? Is there already a resolution that offers integerscaling? Would it be possible to enable an option like that?

How about offering an output resolution that exactly matches the size of the framebuffer without any scaling and with a 15kHz refresh?(I also noticed that lower resolutions give me less problems with smearing colors, like the yellow background/ blue text does so heavily)

Quote from jack.szew

The cable cannot be disassembled, I cannot check it.

You could simply measure the resistance with a multimeter without disassembling the cable.

Isn’t that just a socket you could simply swap out?

Quote from robinsonb5

A megadrive pad shouldn't hurt the docking station but wouldn't be super-useful either because you'll only be able to use buttons B and C.

If the same SD card works OK on the NES core then it's purely a firmware issue with the Megadrive and PC-engine cores, which share the same control module. I can update both cores in due course, which should fix the issue.

It still might hurt the controller, as it would feed 5v into an output. http://wiki.icomp.de/wiki/DE-9_Joystick

Just a psa, better don’t plug original Megadrive/Genesis controllers into a C64. It might destroy your cia and your controller.

Quote from turrican9

Also, did you notice a big difference with ghosting if you don't have your ECS V2 secured to the metal chassi?

I would need to test this, as I've only used it attached to the metalcase.

TC64v2

My Indivision is in a checkmate case and the ghosting is not that annoying. I wonder if grounding the VGA connector on the TC64 would help reducing the ghosting there.

Quote from Tobias

args. ok. (sure thats not the ocean image?)

My bad, you're right. GS image works fine, Ocean fails.

Yes EF works fine but doesn't seem to offer saving on cartridge, disk works though.

The GS Ocean Image starts, but hangs after the Protovision intro and the "In loving Memory" message with a silent black screen. What I noticed, I cant even access the TC freezer menu with the black button, I have first to reset with red and then I can access the menu again.

I did my testing with default settings an the latest core.

I bought it yesterday and the download comes with an easyflash version, which in a first test ran fine, but I didn’t test saving yet.

Quote from Jens

2) it's an added feature, never advertised before. Granted, it seems useful, but the mere fact that it took ten years for the idea to surface, it may not be all that necessary - at least not for the majority of Chameleon users in the field.

I don’t see much benefit in it, as long as you aren’t going to use a 15khz crt, or the lower frequency would promise a better picture(free of ghosting effects) an feeding the signal afterwards into a scan doubler like the ossc to get a proper digital image.

I don’t get the appeal of interlaced video modes, apart from the native interlaced Amiga modes naturally. Modern TVs usually add high latency with interlaced signals and you’ll get combing artifacts or blurred pixels with moving images.

Quote from Dr.OG

[...]my TV does not support 50Hz over VGA, but has a SCART input, which is useful if I want to run the cores on the native resolution of the original HW (576i). This option is present in the minimig core, as well as in case of most other cores available on V1 hardware (PC Engine, MSX, ZX Spectrum, Atari 800). I have a minimig VGA2SCART cable already,

Are you sure these cores output 576i and not 288p(Amiga interlace being the exception) and your TV is misinterpreting the 288p signal as 576i?

As I see it, there are two problems:

1. VGA being incompatible with 50Hz

2. Scart on modern TVs not handling 288p signals correctly.

Both leave me unsatisfied.

Quote from turrican9

btw, from you pictures it looks like you have barely any visible smearing/shadowing.

The shadows are most noticeable with high contrasts like the yellow/blue menu colors, or the default blue on white of the Vic 20.
It's pretty hard to make good pictures, but when the white sprite is moving these repeating shadows are clearly visible.

https://youtu.be/vkT0RLdSuXM

Quote from turrican9

But if you tried connecting it directly to the monitor with a male to male adapter and still have really noticeable smearing/shadowing then it sounds hopeless.

Not directly to the monitor, but directly to the VGA2Hdmi converter I’m using.

Chameleon Core update 9j veröffentlicht

Chameleon Core update 9j veröffentlicht

I don’t think there is any cable that will guarantee you a ghosting free image. I’ve connected the chameleon without any cable and still have ghosting.

I‘m pretty happy with a cheap vga2hdmi adapter. One tip, the adapter shouldn’t do any scaling of it’s own, then it pretty much just converts the vga signal without any visible loss of image quality. I‘m using these kinds of adapters with the Indivision and chameleon.
Chameleon Core update 9j veröffentlicht

Chameleon Core update 9j veröffentlicht