Posts by SID-6581

Quote from Jens

Further, didn't Alastair already find that you rmonitor does not support the low resolution you're trying to use?

No. The frequences work, since i get perfect testscreens with it.

Here are my current settings.

1. For 640x400x8

2. For 640x400x16

Cheers

SID-6581

Hello Alastair,

Thank you for your work! Here comes my report:

The Picasso96 settings had to be changed so that 640x400x8 and 640x400x16 again produced perfect test images.

When I gave 640x400x8 the same (new) settings of 640x400x16 again, the picture problem was exactly the same as in

the photo above... wait ... the picture problem was not exactly the same. This time the scrambled data at the bottom was gone.

After I changed the clock from 22.69 MHz to 25.21 MHz for 640x400x8, the "Back to the Amiga" image was displayed again

without errors in PPAint 7.3c.

It is noticeable that the problem only occurs when 640x400x8 and 640x400x16 have the same settings.

Maybe you should do some research there.

Cheers

SID-6581

PS: It's fantastic that your Core offers Midi and RTG! This is how your MinimigAGACore differs from all other ports.

You should clearly advertise this on your website for everyone to see.

Quote from robinsonb5

(The MIDI ports should already be supported - I'll double check them later today.)

Good news, that would be great!

Quote from robinsonb5

I have seen that effect here before but annoyingly I can't currently make it happen

I offer you to test cores for you.

Quote from SID-6581

In my opinion, this must be a bug, because the test image is OK if I use 640x400x8 with the settings of 640x400x16. But as soon as I open a 640x400 picture in PPaint 7.3c, the error occurs. So the question is where the error is.

I have not expressed myself precisely enough here. I don't think that the problem is with my monitor, as the test image is displayed correctly in 640x400x8 with the settings 640x400x16.

The best thing to do is to take a look yourself.

1. 640x400x8 with 640x400x8 settings:

If I open the picture in PPaint 7.3c in 256 or 16 million colors it looks like this:

2. 640x400x8 with 640x400x16 settings:

If I open the picture in PPaint 7.3c in 256 or 16 million colors it looks like this:

Cheers

SID-6581

PS: Above you can see the TC64V1 with the Docking Station 2, the Joystick VS-7000

and the Cherry G80-3000 mechanical keyboard, which I can warmly recommend to everyone.

The Docking Station 2 has Midi-Ports. Will the MinimigAGACore support this one day?

Quote from robinsonb5

I'm not sure, however, whether it's a driver bug or a problem with the monitor misdetecting the screenmode.

In my opinion, this must be a bug, because the test image is OK if I use 640x400x8 with the settings of 640x400x16. But as soon as I open a 640x400 picture in PPaint 7.3c, the error occurs. So the question is where the error is.

Hi Alastair,

Running 640x400x8 with the same values as 640x400x16 and unchecked vertical "SyncPolarity" had no effect. The error was the same.

Running 640x400x8 with 640x400x8 settings and unchecked vertical "SyncPolarity" resulted in a black screen.

So i left the settings as on the pictures above. I use the LG M2232D-PZ.

Cheers

SID-6581

I can report that replacing

with

in the startup-sequence and renaming LIBS:intuition-v45.library to LIBS:intuition.library,

results in the output of "version intuition.library" -> "intuition.library 45.13".

Unfortunately, this does not affect the screen resolution error reported above.

Cheers

SID-6581

Thank you Mate, i read it. But you forgot something.

As you can read here, you should replace that with: C:LoadModule ROMUPDATE

How do I install the V45 intuition.library?

On my other Amiga-Plattforms i replaced it with:

LoadModule LIBS:intuition.library

With this option you can move windows outside the screen. On that platforms "version intuition.library" outputs version 45.13.

I will try that option later on the MinimigCore.

The current version of Hyperion's intuition.library is 45.13. This version is also installed and can be found on the adf file shipped with update 3.1.4.1.

Where do i get intuition.library V46?

I read the version with DirectoryOpus. There I clicked "Read". Many illegible symbols are then read out, but also "intuition.library intuition 45.13 (3.11.2018)". Why is that different than the version command issues ??? I also have both the intuition.library and the intuition-v45.library in the "libs" folder.

"version intuition.library" results in "intuition.library 40.87".

In addition, I inform you that I am using Kickstartrom 3.1.4 for the Amiga 1200.

I wrote in my first post that i use the "P96 driver V2.4.6" with AmigaOS 3.1.4.1. How can I see the version of intuition.library?

Quote from robinsonb5

Yeah, very strange! You did change the pixel clock to match? Anyhow, if what you're using works, that's fine - hopefully I'll be able to address the other issues in due course.

Yes, both resolutions had exactly the same values as 640x400x16. Both gave a perfect test picture. In PPAint 7.3c, a 640x400 picture was then shifted. The menu bar was so high that it was no longer visible, but also shifted a bit to the left. It was as if the screen resolution was now 840x488 (see Settings) and not 640x400.

Quote from robinsonb5

Nice!

So if both those timings work fine on your monitor, you may as well use the 15-bit timings for 8-bit too - since they make slightly lighter

OK, I tried that. Although the test picture is without flaws, a 640x400 picture opened in PPaint is then displayed vertically shifted. Strange! I have therefore returned to the previous values.

Quote from robinsonb5

Edit: I've just tried to create a 640x400 screenmode, and my monitor refuses to identify it as such - it's detected as either 720x400 or 640x350. The picture's there but the quality's poor because the monitor's expecting the wrong number of pixels. Your monitor might play nicer with this resolution than mine, though. Specs here: http://tinyvga.com/vga-timing/640x400@70Hz

Watch out for sync polarity - this mode should have negative hsync, positive vsync.

Thanks for the hint. I was able to successfully realize the screen resolution 640x400 with the following data:

Only missing 320x200, 640x512 and 320x256.

Cheers

SID-6581

Thanks Alastair for the technical background information. I don't know to what extent an FPGA is comparable to an emulator in this respect, but "amiberry" for the Raspberry Pi solved the problem quite well. Therefore I suspect that there could be a software solution.

Cheers

SID-6581