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ZX Evo switch off double scan on VGA out ?

PostPosted: 11 May 2016, 17:48
by NuClear235
Hello,
is possible to switch off double scan on VGA output ?
I want to see scanlines on VGA out too...

Re: ZX Evo switch off double scan on VGA out ?

PostPosted: 11 May 2016, 22:45
by DimkaM
ScrollLock
or shift+ScrollLock

Re: ZX Evo switch off double scan on VGA out ?

PostPosted: 12 May 2016, 00:34
by lvd
As DimkaM said, you just switch into TV mode and then there is no scanline doubling.
However, horizontal sync changes to 15kHz and it is very rare for any VGA monitor to support TV mode in their VGA ports.

Re: ZX Evo switch off double scan on VGA out ?

PostPosted: 13 May 2016, 13:18
by NuClear235
I just want one line picture one line black and again and again...

Re: ZX Evo switch off double scan on VGA out ?

PostPosted: 13 May 2016, 17:08
by lvd
NuClear235 wrote:I just want one line picture one line black and again and again...

Oh no, such mode is not supported...

Re: ZX Evo switch off double scan on VGA out ?

PostPosted: 13 May 2016, 23:37
by NuClear235
Is is in future open possibility to add it as option or is it hardware limited ?
I need implemented Scanlines to VGA, because my LCD TV kills scanlines from RGB input too :-(
Nice solution will have Spectrum Next - is possible to switch Scanlines ON/OFF in realtime:
Code: Select all
https://www.youtube.com/watch?v=-t6qABc5Hpg&app=desktop