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Forums > CSDb Discussions > Interlace in Emulators
2003-09-18 14:48
Intensity
Account closed

Registered: May 2002
Posts: 337
Interlace in Emulators

I would like to have the optimal emulation of Interlace pictures in WinVice 1.12 . How to set the seetings? Right now the pictures flicker too much and are far away from the quality of a real c64.

And what about CCS64, how to get the best interlace-emulation out of that emulator?

I have asked this in another topic before, but I have got only one answer which didn't satisfy me.

Arman

2003-09-18 15:32
algorithm

Registered: May 2002
Posts: 705
With a Video card without TV out, do the following

WinVICE
Download a program called powerstrip and create a 50Hz mode
Set the 50Hz mode using powerstrip and run winvice in windowed mode. It might be possible to set the custom 50Hz mode in full screen mode?)
Set refresh rate to 1.1

You should get silky smooth scrolling provided that your computer system is fast enough. (16 bit modes are much faster than 32 bit)

CCS64
The latest versions of CCS64 (Version 3 beta) support custom refresh rates (100Hz) altough on my monitor, I cant see the borders.

TV-OUT WINVICE
The easiest and most accurate C64 experience.
800x600 16 bit double size fullscreen
800x600 tvout resolution
1.1 refresh rate (not auto)

CCS64 TVOUT
Have not tried this extensively, although it should work.


The result should give you silky smooth scrolling and consistent interlace. (although there might be a few skips once every few seconds (If you can turn on VSync, this would possibly be eliminated)

I hope the above has helped

2003-09-18 17:54
Intensity
Account closed

Registered: May 2002
Posts: 337
Hmm, sorry, but where to set the 50 hz with the powerstrip tool? I have only found some options in "Display Profiles" where the minimum to chose is 60 hz !

Furthermore WinVice doesn't show me any 50 Hz Option in the Fullscreen Settings at all, but only 60 hz and higher.

I think it's the video card which doesn't allow 50 hz, is it?

Arman
2003-09-18 18:18
Graham
Account closed

Registered: Dec 2002
Posts: 990
you have to change line frequencies and number of rasterlines to get 50 hz. best is a bit above 50.12 since a real c64 has 50.12 hz.

also i would create a new resolution for that. 800x542 suits vice perfectly, and no other program will use that.
2003-10-06 10:53
Intensity
Account closed

Registered: May 2002
Posts: 337
Thanks for your help, but I just don't have a clue how to set all these options in powerstrip. Hehe, I know what you are thinkin now and that you want to kill me, but I will be grateful for a manual how to get a 50 hz mode with the tool mentioned above. There are so much options in that prog that I fear to do something wrong making the system instabile.

.: Arman :.
2003-10-06 11:21
Steppe

Registered: Jan 2002
Posts: 1510
Arman, have you already tried setting your monitor to a resolution capable of refreshing at 100 Hz? Pretty much every monitor these days should be able to manage it up to 1024x768.
I use WinVice 1.13 with the following settings and get a near perfect fullscreen picture with pretty good interlace display:

Options: Refresh Rate: 1/1
Double Size: on

Settings:
Video Settings:
Fullscreen: Bitdepth: 16
Resolution: 800x600
Refreshrate: 100
VBLANK Sync: on

I'd try that method first before going the slightly harder and more dangerous way with Powerstrip (I know out of my own experience that you can fuck up the system if you "optimize" too much...) ;-)
2003-10-06 12:57
algorithm

Registered: May 2002
Posts: 705
The problem with 100Hz mode in WinVice is the 'Ghosting' effect.

50Hz mode looks too flickery on a VGA monitor

C64 and Monitor do not mix together well. It's a better authentic experience on a Television screen
2003-11-19 20:51
Intensity
Account closed

Registered: May 2002
Posts: 337
Ok, now I have the following problem. My gfx-card is the GeForce 3 and is seems that it is possible to create a mode from 60 Hz to 85 Hz only. So I am not able to work neither with Steppe's nor with Algorithm's way.

Is Powerstrip able to do a 50 Hz/100 HZ Mode nevertheless? If yes, how? There are so much options where you can change a Hz-Rate, which is the "Main-Function"?

2003-11-21 08:05
Steppe

Registered: Jan 2002
Posts: 1510
The problem is NOT your Geforce3, it can provide pretty much any resolution up to 200 Hz to a monitor. The problem is your monitor! Its frequency range is 30-85 Hz vertical, but Windoof automatically limits the lower frequency to 60 Hz (at least Win2k and WinXP do, IIRC). There's no way around Powerstrip to create a 50 Hz screenmode.
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