Graphics corruption

[nscaleworld]

Just think, for the amount of money you paid for that setup, you could have gotten yourself an AmigaOne with OS 4.1 and had hundreds of dollars left over. You people with your Amiga 1200 computers really crack me up, lol.
 
My advice:  Part that piece of crap out and sell the items on eBay.  Then take about $1000 of the money you will get and buy yourself an AmigaOne with OS 4.1, and an ATI Radeon graphics board.  You will have a much nicer Amiga computer, for less money.

[rvo_nl]

@freqmax, I will get back to you later on. You raised a valid point that I need to check out, together with Karlos' suggestions.

@TCMSLP that looks like a different problem, your artifacts are animated, whilst 'my' artifacts remain static. I also dont think there can be a heating issue, I get artifacts 30 seconds after doing a cold boot. And we had a proper winter here in Holland

@nscaleworld Thanks, but I dont want an AmigaOne and I love my Classic Machine. It will never be sold and I will never buy a different system. This is Amiga the way I want it.

[Karlos]

Just think, for the amount of money you paid for that setup, you could have gotten yourself an AmigaOne with OS 4.1 and had hundreds of dollars left over. You people with your Amiga 1200 computers really crack me up, lol.

Have you ever actually been an Amiga enthusiast, or are you just another Johnny-come-lately fanboy?

My advice:  Part that piece of crap out and sell the items on eBay.  Then take about $1000 of the money you will get and buy yourself an AmigaOne with OS 4.1, and an ATI Radeon graphics board.  You will have a much nicer Amiga computer, for less money.

Speaking as someone that owns both, that "piece of crap" as you so politely put it is running 20 years after production. I really doubt many of Eyetech's systems will be.


@rvo nl

If a clean reinstall of CGX doesn't work, you might consider a physical strip and rebuild, cleaning all the connectors thoroughly of any grime and dust.

Also, perhaps some other peripheral is interfering with your system. Rebuilding it a component at a time should help eliminate that.

[runequester]

Just think, for the amount of money you paid for that setup, you could have gotten yourself an AmigaOne with OS 4.1 and had hundreds of dollars left over. You people with your Amiga 1200 computers really crack me up, lol.
 
My advice:  Part that piece of crap out and sell the items on eBay.  Then take about $1000 of the money you will get and buy yourself an AmigaOne with OS 4.1, and an ATI Radeon graphics board.  You will have a much nicer Amiga computer, for less money.

And you can get a faster linux PC for a quarter of that. Who cares? We're here to talk about classic amiga's.

[freqmax]

AmigaOne is a PowerPC/Hyperion-OS thing. Not 68xxx with AmigaOS.

[som99]

Just think, for the amount of money you paid for that setup, you could have gotten yourself an AmigaOne with OS 4.1 and had hundreds of dollars left over. You people with your Amiga 1200 computers really crack me up, lol.
 
My advice:  Part that piece of crap out and sell the items on eBay.  Then take about $1000 of the money you will get and buy yourself an AmigaOne with OS 4.1, and an ATI Radeon graphics board.  You will have a much nicer Amiga computer, for less money.

Why do you even post here? Crawl back in the hole you came from and please stay there.
Let us that love classic Amiga love them, not your problem and not your money we spend.
I own PPC hardware for MorphOS but I still love Classic hardware, no PPC hardware can replace 68K and custom chips for me.

[Zac67]

If a clean reinstall of CGX doesn't work, you might consider a physical strip and rebuild, cleaning all the connectors thoroughly of any grime and dust.

Don't think there's any connector involved here, the distortion wouldn't be so static. It's a problem on the gfx card, but since it's with several ones you can rule out a hardware defect. It's either power related, overclocked RAM/chip/RAMDAC or a 'simple' software problem.

I'd leave the installation as is and do a parallel, clean install (separate disk, partition or just system folders). Starting with a basic setup and working your way up from there will definitely tell you where the trouble starts.

[paul1981]

He's tried three different graphics cards with the same result. I wonder if it's the PPC card at fault?

[danbeaver]

From what you describe, It is not a hardware issue but a "patched" or mixed software problem. Try AGA mode, that will rule out the basics, then another graphic driver, like P96 (v2.1c), or go back to the original install version that was packaged with the card. if you meet criteria, try OS 4.1; the software Is a complete new take on the hardware

Yes many of us love our Classic Amiga's and some folks comments are inflammatory for that reason only

[lassie]

Have you ever actually been an Amiga enthusiast, or are you just another Johnny-come-lately fanboy?



Speaking as someone that owns both, that "piece of crap" as you so politely put it is running 20 years after production. I really doubt many of Eyetech's systems will be.


@rvo nl

If a clean reinstall of CGX doesn't work, you might consider a physical strip and rebuild, cleaning all the connectors thoroughly of any grime and dust.

Also, perhaps some other peripheral is interfering with your system. Rebuilding it a component at a time should help eliminate that.

Yes they have 20 years in the running now, and i even think they last 10 years more they knew how to build good machines back then, my oldest Amiga is 24 years old now

[danbeaver]

I would not let Mr Tiny Trains (or is he Mr Tiny Brains) get you off topic

[rvo_nl]

small update here. I tried running some AGA demo's on my tv set, worked fine, no artifacts at all. But there was no sound. More & more I suspected that this had something to do with it, so I removed all components from my machine, to see if sound would return. Not so. Then I reconnected all power cables, especially at the part where the PSU cables go into the a1200 mainboard. Suddenly I had sound output again! Probably a problem with the -12v line? Anyway, I couldnt wait to get everything back into the tower, do another positive sound test, and fire up Diropus. Well, even with sound working I still have the artifacts there I am quite afraid it has something to do with my ppc board. Next step will be a clean install of OS3.9 and CGX4, to see what happens then.

[Karlos]

Suddenly I had sound output again! Probably a problem with the -12v line?

Without a working -12V rail, sound and serial will both have problems for starters. You may get no sound at all, or horribly clipped sound (caused by rectification of the negative half of the waveform). Serial may exhibit all sorts of weird problems or just flat out refuse to work, depending on what is attached. The electrical specification for RS232 considers logic low to be anything from above +3V (up to around +25V) relative to ground and logic low to be anything below -3V (down to around -25V) respectively. IIRC, the amiga serial port uses +12V and -12V respectively for these.

[Karlos]

Don't think there's any connector involved here, the distortion wouldn't be so static

We don't know from a screenshot how the distortion develops over time to know if it is static or not. It never hurts to clean out dust and crap anyway, in my experience.

@rvo_nl

You might have some dust or dirt in the MiniPCI connector where the BVision attaches. Make sure you clean it out during reassembly.

If it was a more general memory corruption issue on the PPC board, I'd expect your machine to lock up pretty quickly as it would surely overwrite something important soon enough.

[freqmax]

Write an appliction that tickle bit-by-bit and see how it works. Might be that the memory works alright, but the graphics chips reads wrong.

[rvo_nl]

I cant write applications.. otherwise I would.

@Karlos I did thoroughly clean connectors of bvision and power circuits. Sound is now at least always working, but the artifacts remain. Ive noticed they consist of 20 or-so lines spaced evenly across the screen. Everything they slice through becomes distorted. Most notably in menu's and interface buttons.

BTW, I never used serial so had no idea this was affected, too. My a1200 connects over PCMCIA.

Everything is now back in the tower and I've done a complete backup of the system, in case reinstalling doesnt help. I honestly dont know where to continue afterwards.. but we'll see.