User manual

User Manual 18
Sample code for Output (using Turbo C/C++ 3.0):
outportb(0x4e,0x87); //Unlock register
outportb(0x4e,0x87); //Unlock register
outportb(0x4e,0x07); //Set Logic Device number pointer
outportb(0x4f,0x09); //Set Logic Device number
outportb(0x4e,0xF4); //Set active register is CRF4
outportb(0x4f,0xnn); //Write data to digital output
Register configuration:
Bit No 7 6 5 4 3 2 1 0
Map Out7 Out6 Out5 Out 4 Out 3 Out 2 Out 1 Out 0