Indivision AGA Problems. Help!

[Kin Hell]

When you're booting OS3.9, it does reboot a second time as it kicks the 3.1ROM into Ram. I have seen this behaviour on the 1D4 board I sent to Italy, but not everytime. Ctrl-Amiga-Amiga should get her booting again. Have you just tried doing a reset when you loose the screen for what seems for ever & a day??

Btw, your Video is FuX0rd. See PM.

Kin

 

[JLPedro]

Sometimes it looks like it reboots yes, doesn't it relates to the maprom feature on the blizzard 1230 IV? Anyway without the Blizzard is the same, but doing a reset Ctrl+A+A don't help a bit, only makes worse, specialy after the first crash, every cold reset results on corrupted booting the OS. About the video i made, it sucks i know..., i didn't have much time. But i can make a mutch better on the weekend and convert to divx to make it small, showing all from starting the machine to the crash and the rest.
At least this can be usefull for future documentation LOL.

 

[Kin Hell]

Now that I've seen your video, that is not crashing m8. That is an intermittent fault with the Video Signal. I'll get back to you about this asap, but it might not be for a few days.

Cheers for now,

Kin

 

[JLPedro]

The video doesn't show the system crashing, after some of that nice on/off "efect" eventualy the Amiga freezes and i have to reset the system.

 

[Kin Hell]

Zetr0 is going to have a look at this for you m8y. Hold off buying another board for a while if you can. Your problem as per the Video is definitely a Timing issue. I'm sure with the Flux Master on the case, you should end up with a working 1d4 & Indivision. If anyone can, he can.

Best for now,

Kin

 

[rkauer]

Same problem, old solution: EAB_link.

 

[JLPedro]

Do you mean "short the E127R resistor"? If so, mine doesn't have a resistor, at least it's nothing writhen on it, it's just a black rectangle.

 

[Kin Hell]

Just to add, the crash you eventually see is because the Video Timing is all wrong. It ends up tripping over itself & will then lock up. All you need to do is stop this loss of Video Signal, as per your .AVI, which in turn will resolve the problem for you. I have some reference pics on another Pee Cee which is off line & will be for some time yet & is one of the reasons I'm trying to Get Zeets in on this to help you. He did mention to me that there appear to be one or two resistors missing from your Mobo & that's only if I got the right end of the stick from what he was saying.

Kin

 

[rkauer]

Your 1D4 have a ferrite bead instead the resistor? Funny things C=/Escom did at that era...

From the few things I know was all 1D4 have a resistor instead the ferrite.

But just for relief, can you short that bugger, good sir?

 

[JLPedro]

The missing resistors and capacitors are the ones involved in the 1D4 timing fix, meaning the resistors E123R and E125R, and the capacitors E123C and E125C. The other Resistor "E127R" that was mentioned on EAB to short, looks to me its not a resistor on my MB, cause it's got nothing whriten on it.
This looks from factory so i assume it's a Escom board, bungie revision 0.

I'll just wait for Zetr0 opinion.

@Rkauer

Not that i don't thrust you!

 

[JLPedro]

Just out of curiosity, what is suposed to happen after shorting E127R, or in my case "ferrite rectangle"? Does this interfers with the video circuit?

 

[rkauer]

Yes, it is a current limitation. Shorting it will allow a higher flux of current to inside the chip at higher frequencies.

Indicated when graphical glitches happen.

 

[JLPedro]

Well time to update, pulled my soldering iron and took a deep breath and decided to short E127R, I'm not a wizzard on this things but managed to do it.
Result: I now get a stable image from the indivision!!!! At least the system is not crashing anymore, .

Now for the not so good part, Image quality is not what i've expected, image seems to flicker very slightly, on HighGFX 1024x768 image is good and clean some slight flickering on left bottom (also on every other resolution) color seems good, get the feeling some discoloration on bottom left, on Multiscan productivity 640x480, image is good but wb screen is bigger than the visible screen so i have to scroll it down. Indivision control panel doesn't do anything on screen position :dry:... and some other thing i can't remember now.
I'm using a Sony Trinitron CRT E100 15''.

@Rkauer, thanks for persuating me to do the E127R shorting fix .

---------- Post added at 11:30 ---------- Previous post was at 11:26 ----------

Other thing, I install WB 3.1 + EIDE99 software for the Elbox EIDE interface, then install WB 3.9, everything fine.
Then on WB 3.9 i insert a CD or dvd but no icon for the inserted dvd or cd apears!! I select mount cd on startup, EIDE reports CD2 is already mounted, but no icon on desktop.

 

[JLPedro]

I'v managed to put everything together and working (Elbox EIDE + 60GB HD + External DVDrw, Blizzard 1230 IV 50Mhz, 1D4 MB, and Indivision AGA).
OS 3.9 BB2 running.

Only one thing remains, image from the indivision is stable but slightly "ghosted", tried with a ground wire to the lower shield, improved very slightly but it's still noticiable.
Is this common and will just have to live with it or can it be worked out?

PS: Apart from the "ghosted" image, it seems better on my sony TFT than on the sony CRT, on the TFT there's no flickering.

 

[rkauer]

Can you try an insulated tin foil wrapped around the internal VGA cable to avoid the cable catching interference from the Amiga board, perhaps?

 

[JLPedro]

humm... have to trie that.

 

[JLPedro]

Thread can be closed, Thanks.

 

[Tajmaster]

Im assuming all is ok now? Care to share what fixed it??

 

[Kin Hell]

@ Taj

Shorting (is that the same as grounding? :shrug: ) the E127R ferrite thingy-mer-job stopped the Indivision from corrupting the display.

@ JLPedro

Did the Foil wrap on the VGA cable help at all?

Kin

 

[Tomse]

@ Taj

Shorting (is that the same as grounding? :shrug: )

To short a component you actually just connect it's 2 connection points rendering the component useless, you can also use a jumper to short 2 connection points, this is what jumpers do ;-)

if you short a 1k Ohm resistor, the resulting resistance will be 0 Ohm (depending on what you short it with, but not going to get too technical here )

when you ground something, you attach it to ground / 0V reference.

so it can be grounding, but not necessarily