To send a byte to a machine output port.
h and j are integer expressions. h may be within the range of 0 to 65535. j may be within the range of 0 to 255. h is a machine port number, and j is the data to be transmitted.
OUT is the complementary statement to the INP function.
100 OUT 12345,225
Outputs the decimal value 225 to port number 12345. In assembly language, this is equivalent to the following:
MOV DX,12345 MOV AL,255 OUT DX,AL