![]() ![]() The second picture shows the image when I connect the RGB lines directly. I will see if I can fix this by using a variable resistor. This low voltage results in a far to low output voltage. I measured the supply voltage and it is just 4.43V. As you can see the colors are inverted nearly correct. The first picture shows an inverted bios screen. Unfortunately it is not working 100% yet: This is nothing special an can be done very quick.įinished the output today and did a first test run: In my opinion a simple inverter for the color lines would do the job. I think Sirta got a few things wrong when he did his "review" of the card and its dongle. Fixes for both are possible in metal layers. Flash ROM bug where part can't be written. Looking at a dongle to invert the inverted output. high is low and low is high which turns out to be rather sucky since displaying is difficult. Quote: 11/29/00 Rampage is running but there are some stupid bugs. The only thing we know is that the colors are inverted, nothing more. Also this statement with the "impedance adjustment" seems wrong to me! The card would not create a clear picture if there are such problems. I don't think this dongle is made for filtering purpose, therefore the dongle is optically too simple. Furthermore, I found: " Monitor link requires an interface circuit named Dongle for level and impedance adjustment." So the transistors and resistors seen on the dongle board are used for correcting voltage level output and/or matching impedance output to the monitor (monitors are typically terminated with 75ohm to ground with VGA). Trevormacro wrote on 20.12.11 at 18:17:55: I read on another forum " This is an accessory that works as a filter to correct I/O video signal since there are some defects in the silicon layer", so the dongle fixes more than just RGB color pins or whatever problems you guys thought it corrected. If you can't find a schematic you will need to find one of those dongle boards and reverse engineer the schematic by hand (maybe ask NightBird on /enboard)- and then the trick will be finding the right transistors as I doubt they used general purpose transistors. If you can find a schematic for the dongle board, you can easily reproduce it. ![]() I read on another forum " This is an accessory that works as a filter to correct I/O video signal since there are some defects in the silicon layer", so the dongle fixes more than just RGB color pins or whatever problems you guys thought it corrected. To make that Dongle you need to reverse engineer it and build a schematic-which you can't do easily from only looking at a picture of it. ![]()
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