QUOTE(FrostyTheSnowman @ Aug 24 2009, 07:16 AM)

2. If you have a really long cable (1 meter or more in length) then the 100 Ohm resistors will cause NandPro to not detect the NAND controller. If you are unable to detect the NAND controller and you are using a fairly long cable (1 meter or more in length) you NEED to remove the resistors, or else it will not work.
Please correct me when i'm wrong but if someone is using a 5volt lpt port and has problems with the wiring they could potentially blow up their xbox with this tip.
Just measured 14 meters of awg26 thin utp cable as a test and it had only 2,4 ohms per wire.....
Personaly i would not leave out the resistors, just replace the 100 ohms with a smaller value like 50/20/10 ohms when having trouble.( if they ask more than 0,15 per resistor they are expensive, so take home some more when you are making a cable)
You can easely check the resistor values here if you get them husseled up:
Resistor color code calculatorAlso a simple multimeter will cost almost nothing at the hardware store, easy to have around
You can also check if you have a 3.3volt or a 5volt port by mesuring pin d0-7
Pinout LPT portPlease measure d0-7 because the other pins mostly have 5v for compatibility reasons
If you want to check if your port is stil working/debug your cable try the following:
1. Open C++ PortIO and select HEX under format( C++ PortIO is installed with the Port95nt.exe)
2. Adres is the adres of your parralel port (0x378 for lpt1 etc, check under the lpt1 properties of the windows device manager)
3. If you change "value", do-d7 will change to:
0x00 d0-d7 0v
0xFF d0-d7 3,3v
0x55 d0=3,3v, d1=0v, d2=3,3v, etc
0xAA d0=0v, d1=3,3v, d2=0v, etc
If you connect your cable(best without xbox connected or at least disconnected from 110/220v) and check the voltages at the end, it is easy to check for shorts etc if you use all of the above values.
You can easely make more values by setting windows calculator to scientific and to BIN, input something like 11110000 and clicking on HEX