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Atari 65XE Bad GTIA chip

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rubber_jonnie
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Re: Atari 65XE Bad GTIA chip

Post by rubber_jonnie »

mgi wrote: Tue Jun 06, 2023 3:56 pm This forum is the best - I have no question about it. In few minutes kind people offer to help!
Do you think which chip could still be used?
We try very hard to make it a friendly place, I'm glad you're finding it so.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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PhilC
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Re: Atari 65XE Bad GTIA chip

Post by PhilC »

mgi wrote: Tue Jun 06, 2023 3:56 pm This forum is the best - I have no question about it. In few minutes kind people offer to help!
Do you think which chip could still be used?
I'll need to solder a couple of legs onto it and test it but I suspect so yes.

Failing that I likely have a spare 65XE board that works.
If it ain't broke, test it to Destruction.
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Re: Atari 65XE Bad GTIA chip

Post by mgi »

PhilC wrote: Tue Jun 06, 2023 4:00 pm
mgi wrote: Tue Jun 06, 2023 3:56 pm This forum is the best - I have no question about it. In few minutes kind people offer to help!
Do you think which chip could still be used?
I'll need to solder a couple of legs onto it and test it but I suspect so yes.

Failing that I likely have a spare 65XE board that works.
That would be great big thanks! I will be buying rounds on 8th of October - no question about it!
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PhilC
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Re: Atari 65XE Bad GTIA chip

Post by PhilC »

@mgi I had to repair one leg and it boots now.

IMG_2711.jpeg
IMG_2711.jpeg (433.32 KiB) Viewed 1682 times
If it ain't broke, test it to Destruction.
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Re: Atari 65XE Bad GTIA chip

Post by mgi »

Looks great! If someone wanted ever to test in Sysinfo is the option to check for 'Bad GTIA'.

This is how it should look like:

IMG_1135.jpg
IMG_1135.jpg (712.47 KiB) Viewed 1679 times

This is how it looks on mine:

0C8A7FEA-4451-47C1-A6A9-5F4F3A245171.jpg
0C8A7FEA-4451-47C1-A6A9-5F4F3A245171.jpg (189.66 KiB) Viewed 1679 times
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rubber_jonnie
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Re: Atari 65XE Bad GTIA chip

Post by rubber_jonnie »

Eeew, rubbish!
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
mgi
Posts: 136
Joined: Sun Jun 06, 2021 4:37 pm

Re: Atari 65XE Bad GTIA chip

Post by mgi »

It gets worse :)
I was testing on this demo https://demozoo.org/productions/62247/? ... W8iffIYtxw

It should be like this:

IMG_1127.jpg
IMG_1127.jpg (553.89 KiB) Viewed 1670 times

And on my CRT looks like this:

E0D5B684-47C3-41DE-9BCE-962E9E131D63.jpg
E0D5B684-47C3-41DE-9BCE-962E9E131D63.jpg (140.45 KiB) Viewed 1670 times
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PhilC
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Re: Atari 65XE Bad GTIA chip

Post by PhilC »

I know this GTIA boots, not sure about anything other than that
If it ain't broke, test it to Destruction.
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