post4dby Add Komoncharoensiri, Director of Technical Services at 4D Inc. Here we go with another set of tips and tricks. The 4D Knowledge Base is a library of information about 4D technology where weekly tech tips and monthly5V PCI interface (not compatible with ALIX.1C ALIX.1D). During power on self-test (POST), most PC BIOSes will write diagnostic codes to port 80h or port 84h (jumper selection). Use post4d