Basic computer language commands

Basic computer programming language

OUT Statement

Purpose:

To send a byte to a machine output port.

Syntax:

OUT h,j

Comments:

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.

Examples:

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

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