Hello,

I just discovered I have a worse problem here with my Mac. The said TV set doesn't adjust to MorphOS (default, LiveCD) frequency. I use DVI2S-Video converter, it worked with MacOSX before and I am 90% sure I used it with MorphOS once (then-installed on HDD).

Now I cannot do it. Even the butterfly is shattered. The said TV has 50 Hz frequency. Anyway either the damn Mini chipset got broken or maybe it is possible somehow to change MorphOS parameters on an iso so that it launches on low frequency?

[ Edited by DiskDoctor on 2010/6/26 14:19 ]

I checked MorphOS using regular display. It contains Display settings (atongside Screen settings). There are many displays listed there, but not my TV set.

The question is how I retrieve this all specs to make my profile? Google?

:-(

I suppose I could call their (LG) local service desk to give me that params. Would that be enough? I ask because I'm not sure. While display and MorphOS on, I attach Apple DVI2S-Video, then, CD starts some rapid operations and then, the display on a TV set is shattered. Dismantling the converter and back to the proper display - everything seems fine.

So what's the chance when I get the proper params and create a new display profile, that the said converter will not ruin everything?

I suppose I could call their (LG) local service desk to give me that params.

These params should be listed in user's manual of your TV set. I guess they may be also found somewhere in the Internet. Unfortunately you've not specified the exact model of your TV.

[ Edited by Krashan on 2010/6/25 18:50 ]

Quote:

I am sorry. I just wanted to be sure that wherever they are, they're somewhat reachable and guarantee the TV will work (and won't explode).

My concern was rather about this Apple DVI2Video adapter won't mess stuff up, despite the TV frequency params properly set.

Any modern LCD monitor/TV cannot be damaged by exceeding rated horizontal and vertical refresh. The same for pixelclock. The worst thing that can happen is just no display or some weird display.

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The point is that it's not modern at all and it's not LCD. Just a bulky (but large) TV

BTW the model is LG RE-29FA34RX. Finding a free manual on the internet is difficult though. I will try to call LG desk hoping they've got the ancient manuals (nothing on their site either).

The point is that it's not modern at all and it's not LCD. Just a bulky (but large) TV.

Then I doubt it supports noninterlaced 50 Hz display. And be cautious, CRT TV set may be damaged, especially while incrementally increasing horizontal scan rate.

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So - what do you suggest? Forget about the TV as MorphOS display? Or bring on some help?

:-)

Anyway please note that I watched movies on it successfully, using MacOSX and the said dongle. Isn't this some sort of a good news?

I do not know the exact construction of this converter, but I guess it does not change neither horizontal not vertical scan rate. Then your TV expects 720 x 576 interlaced with horizontal rate of 15 625 Hz and vertical rate of 50 Hz. You just have to force graphics chip to generate such signal. Note also that both sync pulses have to be negative. Unlike any modern monitor, TV set has no auto polarity detection usually.

To be 100% on safe side, I would turn "good" mode on MacOS and measure sync pulses period and length with an oscilloscope (any cheap 20 MHz bandwidth model will do). Then I would try to get similar parameters on MorphOS with only oscilloscope connected. After that I would connect the TV.

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But assuming I have no MacOSX anymore, since my HDD was removed and scrapped as broken?

I can always get myself some dedicated DVD player. I just thought MorphOS would do...

Then just make sure you have 15 625 Hz horizontal refresh (vertical rate exceeding is not so deadly for CRT TV). Having it a bit too low will not fry the TV, but going above 16 kHz is risky.

I just thought MorphOS would do...

I guess it can. It just needs some experiments and basic knowledge of television signal parameters.

"Classic" TVs are not supported with the DVI2S converter on MacMini (yet). In fact this converter doesn't really convert the signal at all, it just passes the TV tuned analog signal through the analog part of the DVI-I connector to SVHS/Composite. The "Live"CD does not handle TV frequencies at all.
This might happen in a future release but with limited demand it's not really going to happen soon.

@pega-1

Thanks for clarification.

So now I know that in order to have my Mini attached to a CD, I gotta get a new HDD eventually...

Or a Home Theater set maybe?

I'd say a new HDD will be a little bit cheaper than new home theater system ;)

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It depends. It's another net cost and I'm really spending money now on something completely else here than upholding an Amiga system...

Besides I checked the pricing in PL and saw pretty nice stuff for $150. So comparable price. And unbranded DVD readers cost far less than HDD with shipping and mounting.

Anyway I feel kindda upset. And I lack money now, I gotta invest more in my education this year, to afford better kind of whiskey next year. That all makes a tricky situation now regarding MorphOS...

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[ Edited by Velcro_SP 27.04.2011 - 07:05 ]