Re: Voodoo 1 with "TMU PowerOn Sense: 0xdead", "Board 0: Bogus number of TMUs (57005)!" & "ERROR: b_sum=0x060 r_sum=0x0

Posted on 2023-08-31, 04:35

by

by treeman

in Marvin \ Video

in Marvin \ Video

The wavy lines could be the video signal filters, they are the smd chips right on the way out to vga output. I have a voodoo which had a blown filter which I replaced with a filter from a random dead s3 trio and it shows some slight lines, not enough to bother me.

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Screen goes slightly dark when side scrolling in Monster Basb

Posted on 2023-07-26, 09:34

by

by treeman

in DOSBox Games/Apps

in DOSBox Games/Apps

When I play monster bash on dosbox the screen dims a little bit when the game scrolls to the sides. So if I am on a screen that doesn't move everything looks normal. As soon as I walk enough to make the screen scroll the brightness dims. I tried under pure does and it doesn't happen. Is this maybe a …

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Re: Killed two Nforce2 south bridges with a faulty POST diag card...

Posted on 2023-07-07, 08:48

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

sounds like you know what to do, I have never done bga on anything bigger then mobile phone pcbs but suspect this is where the problem is. The heatgun you are using may not be delivering enough heat, altho when the chips are floating it usually means its all ok to move. Maybe the age of the hw also …

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Re: Killed two Nforce2 south bridges with a faulty POST diag card...

Posted on 2023-07-07, 00:25

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The pads usually rip when all the solder has not been fully liquified under the chip, when you pull off the chip do you first gently touch it to see if it floats then take it off? How do you prepare the chip that goes back on? The pads on the replacement chip need to be wicked off from the old …

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Chicony CH-486-33/50 No post but got diagnosic card codes

Posted on 2023-06-12, 01:17

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am going back through some of my old boards. This one used to work but when removed from a case sometimes it would boot others it wouldn't. Now that I got a diagnostic card I would like to try track down the issue. So at this stage I know that pressing down on the cpu and the area where the cpu …

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-06-11, 01:11

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok I tried the clockgen chip now to see how good the multimeter was. Looks like you were right rasz, shows signals on 8mhz 25mhz and 33mhz https://i.ibb.co/R2J2FVg/8mhz.png 8mhz https://i.ibb.co/n87Rc1Q/25mhz.png 25mhz https://i.ibb.co/GQ0MnZP/33mhz.png 33mhz D7=Refclk So like you are saying good …

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-06-10, 01:46

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

For reference I tried another motherboard on 1 address line and got a more better result on the same settings, so I think pulse view can see ok

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-06-10, 01:06

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

on 12mhz im getting a similar picture Anything over 12mhz pulse view crashes, I think the driver can't handle the faster speed from what I googled

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-06-09, 03:31

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

D5 = pin 20 D4 = pin 22 Others are address lines This is when I pressed reset 2 times So if there is no signal to chip enable basically the bios is not powering on from what I understand

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-06-09, 00:55

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

ok thanks, I will do that

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-06-09, 00:51

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

just to confirm pins 20 & 22 on the cpu?

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-06-08, 22:30

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok so I finally got back to this project. I wired up the controller like in the links rasz provided me. Ground to the ground on the bios chip and a few of the PB probes to the data lines on the bios. The result wasn't exciting at all, I got some activity on pulse view on power up but thats all. Rasz …

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-05-30, 23:30

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I wanted to update this thread, I have received the usb board some time ago. Have been very busy with personal life and haven't had a chance yet to do anything. Slowly I am getting back into it. I installed pulse view and the drivers recently but having trouble detecting the board in pulse view. I …

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Re: Help repairing Gainward Voodoo 2

Posted on 2023-03-15, 20:40

by

by treeman

in Marvin \ Video

in Marvin \ Video

Hopefully it is the pins, then it is a much easier and feasible fix then changing the whole chip. You really need some kind of magnification for these things to see properly. With the naked eye it is very hard to tell exactly what is happening. Even using your phone camera to zoom all the way in and …

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-03-13, 11:10

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for your reply. This motherboard uses the dynamic cache technology so no cache from what I understand, perhaps why the cache pins are not connected.

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Re: Help repairing Gainward Voodoo 2

Posted on 2023-03-13, 09:22

by

by treeman

in Marvin \ Video

in Marvin \ Video

Fbi memory = 0 first problem TMU PowerOn Sense=0xdead = second problem WARNING: Board 0: Bogus Number of TMUs (57005) I have had this error before, in my case I think it was a semi shorted tmu chip. Also your fbi chip is not detecting the ram.

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-03-13, 06:50

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So I did a bit of digging around. I looked up what sounds like a serious pin to me C12 "smi act" System Management Interrupt Active. Indicates that processor is in system management mode. On my working working motherboard (different model but also vlb 486) I traced this pin to a resistor then to the …

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-03-13, 01:30

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I was just doing some thinking it could be some missing communication with the cpu. I randomly probed a few pins on the cpu socket and a few had no continuity to ground. Well this doesn't necessarily mean anything but I did a quick comparison to a working board. I didn't do all the pins, just found …

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-03-12, 13:11

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank you for confirming it working, 1 thing off the list

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Re: Octek hippo vl+ 3.02 no POST no Beep no Code

Posted on 2023-03-12, 12:07

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It is a mr bios but I am attaching it anyway. Inside the file I can see the mr bios heading and version so it is a good sign it works. I also tried the Ami bios I found for this motherboard but I think its not for the 3.02 version but lower versions. Flashing it to a erasable chip I have also did …

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