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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: kickstart on August 31, 2010, 02:12:10 AM

Title: Indivision aga 1200
Post by: kickstart on August 31, 2010, 02:12:10 AM
After make all fixes to my a1200 1D4 motherboard, 1024x768 still gliching, sand the indivision connector its enought important for it?

Whats the last estable update for indivision? Any new nice resolutions for indivision? Maybe too much questions but im lost with the indivision at this times.

Thank you!
Title: Re: Indivision aga 1200
Post by: Crom00 on August 31, 2010, 02:43:57 AM
My indivision was having the same problem.I sold it on ebay as is with full disclosure of the issues I had. The buyer desoldered the esiting Indivision socket and resoldered a newer socket and that fixed the problem. He had experience with surface mounted IC's and desoldering so it was easyfor him. I hope they fix this in the next batch.
Title: Re: Indivision aga 1200
Post by: save2600 on August 31, 2010, 03:31:40 AM
Using a bench grinding wheel, can't you just "grind" or trim that socket down to make a better connection? I remember reading where people have done this with great success. You grind down the socket until you just begin to get to the pins... BE CAREFUL not to overdo it!   :laughing:
Title: Re: Indivision aga 1200
Post by: Crom00 on August 31, 2010, 04:01:16 AM
I over dit it....why should I have to take a $140 thingy that's supposed to fix the flicker to a grinder...?

I thought Germans made good stuff.

Totally my falult I wound up bending a pin, I placed a wire over the bent pin and that actually made it work but the display would still dsiplay some strange behavior now and then. Enough to sell it as is.
Title: Re: Indivision aga 1200
Post by: delshay on August 31, 2010, 06:56:59 AM
iv said this in another thread,the only *true* fix is to change the chip on the motherboard or the socket on the Indivision this is what iv done.

you can sand down the connector and it will work for some time, but after a while it stops working,i think this is down to small movment on the motherboard around the chip/socket when the A1200 is move or subjected to vibration.
Title: Re: Indivision aga 1200
Post by: Cammy on August 31, 2010, 08:23:31 AM
"Colours of RGB $FFFFFF can produce problems with the built-in EMC noise suppression circuits, leading to colour flickering and, after a while, crashes."

It's possible your problem isn't with the Indivision, but with your colour palette. Try this patch and see if it helps: http://aminet.net/package/util/misc/BitmapShades
Title: Re: Indivision aga 1200
Post by: kickstart on August 31, 2010, 10:38:24 PM
@Cammy

My palette is the original of os3.1

@all

If the problem is the crapy connector, why only fails at 1024x768?
Title: Re: Indivision aga 1200
Post by: Ratte on August 31, 2010, 10:51:48 PM
Quote from: kickstart;576966

@all

If the problem is the crapy connector, why only fails at 1024x768?


can be reproduced in all other 35ns pixelclock screenmodes
try the ugly 1280x512 pal-superhires-interlace for a while
or sometimes it happens with super72 at 800x600, too.

its a bug on the a1k2-mainboard, havent heard from any equal problems from a a4k owner
Title: Re: Indivision aga 1200
Post by: Cammy on August 31, 2010, 10:52:16 PM
There's your problem then...

Try that patch.
Title: Re: Indivision aga 1200
Post by: kickstart on August 31, 2010, 11:04:47 PM
@ratte

This bug?:

http://eab.abime.net/showthread.php?t=41376

Post #27 from novacoder resumes all.
Title: Re: Indivision aga 1200
Post by: Ratte on August 31, 2010, 11:09:16 PM
yes


jens told me, that it could be possible the next batch of indivisions might come with a workaround for that hw-bug.
Title: Re: Indivision aga 1200
Post by: kickstart on August 31, 2010, 11:14:09 PM
But this link speak how to solve it... or its just a joke?
Title: Re: Indivision aga 1200
Post by: Ratte on August 31, 2010, 11:35:48 PM
Quote from: kickstart;576974
But this link speak how to solve it... or its just a joke?


its not a joke, but how many people can hold a soldieringiron in the right direction?
most users will destroy the amiga or will burn some fingers ... :P
Title: Re: Indivision aga 1200
Post by: NovaCoder on September 01, 2010, 12:57:20 AM
Quote from: Ratte;576976
most users will destroy the amiga or will burn some fingers ... :P


Yes I burnt my fingers when I fixed mine......but it was worth it!

:)
Title: Re: Indivision aga 1200
Post by: kickstart on September 01, 2010, 01:49:32 AM
Looking at your signature seems like destroys the amiga too, heh

Seriously, this fix allow this resolitions without flickerings and glitches?
Title: Re: Indivision aga 1200
Post by: Cammy on September 01, 2010, 01:54:30 AM
Wow, I would try a software patch first before taking a soldering iron to the motherboard, isn't it worth a shot?
Title: Re: Indivision aga 1200
Post by: NovaCoder on September 01, 2010, 02:01:14 AM
Quote from: kickstart;576989
Looking at your signature seems like destroys the amiga too, heh

Seriously, this fix allow this resolitions without flickerings and glitches?


As I said in the thread over on EAB, it takes about 15 mins to try it....what have you got to lose?   Just lay the guts of your 1200 upside down on a desk, then when it starts to flicker short out the resistor with a flat bladed screw driver and see if it works.
Title: Re: Indivision aga 1200
Post by: amiga92570 on September 01, 2010, 02:46:41 AM
Funny, I have three indivisions and have not had one issue. They are installed on three different boards. 1d.1, 1d4, and Pal 1d.1.
Title: Re: Indivision aga 1200
Post by: Crom00 on September 01, 2010, 03:33:26 AM
Quote from: amiga92570;576996
Funny, I have three indivisions and have not had one issue. They are installed on three different boards. 1d.1, 1d4, and Pal 1d.1.


God someone has to just reverse engineer the whole shebang and place it on a FPGA...give it an expansion slot.

He lets all go into a lottery ticket pool (like folks do at work) and if we win, then  we agree split the winnings towards development of an FPGA Amiga replacement.

I think that has better odds of happening than waiting for the IP owners to do anything with the technology.

We can then hire Jens or Jerri Elsworth, or Mick Tinker to execute the project.