HI to all.
I have a Pegasos II (morphos 1.4.5, latest ambient, mui 4) with ATI Radeon 8500 AIW and SONY SDM HS95P (X-Black) LCD monitor.

My monitor features:

Analog Horizontal Frequency (kHz): 28-80
Analog Vertical Frequency (Hz): 48-75
Digital Horizontal Frequency (kHz): 28-64
Digital Vertical Frequency (Hz): 60.0

Does anybody know if with these specs and some modeedit tweaking it might display smaller screen resolutions like 320x256? (I can get them within EUAE....)
Did anybody try anything similar?

I tried some "experimenting" but, even when in modeedit I read that frequencies are "in range", when I go "testing", my monitor gives me the "out of range" warning, saying that frequencies are actually higher than the selected ones.

Not to forget that modeedit looks quite buggy and unstable after any unsuccesful test, bloking my Peg.

Thank you for any hints....

Mario

This is a good question for me too. While I'm at it, on MOS with older Radeons (7000, 7500) I just plug 'em in and MOS has tons of nice modes which work just fine OOTB.

When I got my PegII and the included Radeon 9250 half height card, I get only a few modes, and almost none of them except 640x480, will work right. (This is with a CRT monitor on the analog part, btw-haven't even tried the DVI/LCD route yet) When I try to use modeedit, I get a bunch of garbled up modes with really bizarre video timings which won't work. Is there something I need to change?

I have MOS 1.4.5 with 3D updates installed, do I need something else?

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yes, you need to tweak these screen modes according to your monitor specs. I did it for every mode here and now i got all of them displaying nice on my screen.

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maybe you have to select your monitor type. i've got only a few modes too until i set the monitor type to my monitor (fortunatly it has the same type as i have), then i have all modes/freqs to edit.

strange thing, that i use the same monitor with a winpc at 1024*768@100hz but if i select the same mode on mos the screen is much more smaller even if i set the size to the maximum in the monitor's own prefs (it wont fit the screen). i have to use mos at 1024*768@90hz, it works fine.

Am I the only one to experience strange behaviour, unexpected freeze of ambient, etc. while using modeedit?
I doesn't seem to display the real timings and frequencies when you are in edit mode, so the final screenmodes have different actual parameters than expected and won't work...
This is even harder with the restricted range of lcd monitors

mario

P.S. I had a working config for crt monitor, and can share it if needed

smallest screen resolution of all known lcd displays is 640x480. if you need smaller, it will be only a part of the screen...

bye, MarK.

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mine was able to display 320x240 fullscreen, and it was quite a low cost one.

where? afaik, in uae, you can double the pixels, but all the new lcds are capable to use only 640x480 and more... you probably had a special one...

bye, MarK.

ps: any link with specs?

@Mark

Do you think it might be possible, at least, have a 320x240 screen for only a portion of the monitor?

I can't do that, either. The point is that modeedit looks, to me, quite unreliable, because it doesn't display, during editing, the exact frequiencies and timings chosen.
Actually, when you think you are in the chosen range, within your monitor specs, testing gives you an ouput out of range

Mario

[ Edited by Mario on 2006/12/28 12:28 ]

i suppose that's really it. don't even try to setup a lower resolution, and get used to use smaller resolutions as a part of a bigger screen. that's 'standard'... if you setup in the monitor specs the real monitor values, it shouldn't allow you to get out of these bounds... if you still get out of range, does the monitor tell you, what value is out of range? first what i would try is to setup the maximum and minimum horizontal frequency to 60 Hz as it's a standard. usualy the best way to setup a lcd display is to setup a resolution, that looks -almost- okay, and then press the auto adjust button, and it should be done for all your resolutions for the first time.

if you need to know more, let me known. i have made working many crts and lcds :)

bye, MarK.

I should also do some tweaking with ModeEdit. At the moment I only get black screen when trying 320 resolutions. I know they should work fullscreen on my flat monitor (cheap BenQ), because same monitor on A1200 with Voodoo3 works with 320x200 and 320x240. 320x256 works otherwise, but it's bit cutted from bottom. So I should check the settings from P96 on Amiga and try to clone them to ModeEdit on Peg...

Anyway I need 320 modes time to time for old games and demos...


[ Edited by jPV on 2006/12/28 14:07 ]

@Mark

Of course you're right...
Strange low-res customized resolutions aren't actually of use.
The problem only arises with some sdl programs, which can't be switched from window to fullscreen because of the custom resolution needed.
Or with some game console emulators...

By the way, where is the needed "auto-adjust" button? On the monitor itself? Or in Mode-edit window? (I'm not home, so I can't check it right now...)
When I'm home, I'm posting you a practical example of the difference between the values set up in modeedit window (within the monitor capabilities) and the resulting warning of my monitor, saying that those values are, actually, much higher than expected. Is this normal?

Mario



[ Edited by Mario on 2006/12/28 15:05 ]

i know... we all sometimes need it... for those good old games like doom etc... sometimes, you can use overlay, if the game supports it... (well, i haven't tried this ever)

the autoadjust button can be anywhere... on my new benQ 17" lcd it's a special button the most left one... at my work, on dell, 20" lcd, it's somewhere inside the menu... just take a look at it... it's perhaps a function of all modern lcd displays, and makes the settings much simplier, as the lcd adjusts itself automaticaly... but i don't know your monitor, so... just try to find it.

and when talking about those out of range values, if they are too high... just lower them a bit in the monitor settings... (or select a proper one from the list)

bye, MarK.