LCD on Picasso IV

[orange]

In some other thread, I read this:
"Especially the horizontal freq is important for Amiga-usage. I have a scandoubler for the vertical frequency of the Amiga, but the 50Hz remain. (Most TFTs start at 56Hz!)"

Can LCD monitor with these frequencies:

Horiz. Rate (Analog)    30-81
Horiz. Rate (Digital)   30-63
Vertical Rate   56-75
Bandwidth       135

work with Picasso IV in both 1280x1024 and scandoubled Amiga
modes like early startup screen?

 :-?

[Jope]

The Picasso IV is the rolls royce of all Amiga flickerfixers.. You can configure it to double the vertical frequency between 50 and 120Hz.

I have a scandoubler for the vertical frequency of the Amiga, but the 50Hz remain.

Note, that you were talking about vertical frequency when you meant horizontal. The scandoubler doubles the horizontal scan rate from around 15kHz to about 31kHz.

[Brian]

If it do go as low as 30Khz then 31.5Khz (doubled 15.75Khz) should be no problem... thing is some of these monitors start at 32Khz and blindly ignore 31.5... for the Picasso screenmodes itself it should work without any hickups.

[Framiga]

Hi orange,

should be enough, to gain the Vert freq. of your programmable PIV SD/FF, to 60 Hz (or more).

Ciao

[fx]

But would he be able to display PAL modes on that screen? As I understand it you can either run PAL in 50Hz or with the PIV scandoubler in 100Hz, but from the specs of the monitor it says it can handle from 56-75Hz? Or did I get it all wrong?

[Brian]

You got it wrong... 50Hz is Vertical... but as some owners here say the picasso can up that to 60Hz so it's in the 56-75Hz window of your monitor (Don't own one so can't confirm this though).

The Scandoubling thing is the horizontal and on stadnard Amiga this is 15.75Khz but with scandoubler it gets up to 31.5Khz so it too get in the 30-81Khz window of your monitor.

[orange]

Wow, you are fast !
I really don't know much about Picasso IV, so before taking it to shop to test it with LCD, how do I configure it (if that is needed)

Thanks all for replies.

 :-)

[fx]

Brian wrote:
... but as some owners here say the picasso can up that to 60Hz so it's in the 56-75Hz window of your monitor

Well, yes, but I always though that it showed NTSC at 60Hz or 120Hz and PAL at either 50Hz or 100Hz ?

[zipper]

> Well, yes, but I always though that it showed NTSC at 60Hz or 120Hz and PAL at either 50Hz or 100Hz ?

No, you can freely edit them upto about 160 Hz. And exact 100/120 Hz is about impossible.

[volmer]

orange wrote:
I really don't know much about Picasso IV, so before taking it to shop to test it with LCD, how do I configure it (if that is needed)

Try holding down left SHIFT before boot. You should get the PicassoIV early-startup menu. You can configure the ff-frequency through that.

[zipper]

No, you just can reset to default/use your preconfigured.
You need Picasso96ModeTNG to tweak the FliFi cfg.

[zipper]

..oops; PicassoModeTNG.

[orange]

Thanks for that left Shift tip.
Excuse me for being ignorant, what is PicassoModeTNG?

[Jope]

orange wrote:
Thanks for that left Shift tip.
Excuse me for being ignorant, what is PicassoModeTNG?

A piece of software for tweaking Picasso96 display modes.

It is also able to tweak the flickerfixer modes and save them to the card's flash..

100Hz PAL modes, wahahay!

I think TNG needs a working P96 installation, however. I run CGX4 and haven't been able to change my flickerfixer from the 80Hz someone else set it to. :-(

I guess I'll have to install P96 again for a while..

[Framiga]

Hi fx

usually a scandoubler, doubles ONLY the Horyzontal rate to ~31.250 Hz for PAL (15.625*2) and ~31.500 Hz for NTSC (15.750*2) without touch the Vertical rate (50 for PAL and 60 for NTSC).

With a programmable FlickerFixer (like the PIV one), you may choose the Vertical rate from 50 to 120 Hz.

So, for those monitor, should be enough, to choose a rate from ~60 Hz to 75 Hz (better) for the Vertcal scan rate.

Ciao