Saturday, April 30, 2016

8051 Program – port loopback

; port loopback
; read from port 0 and write back to port 1
ORG 0H
MOV P0, #0FFH ; make P0 an input port
MOV P1, #0H ; make P1 an output port
BACK: MOV A, P0
MOV P1, A
SJMP BACK
END



Related topics:
8051 Program - logical operation   |   8051 Program - parity generation   |   8051 Program - polling an io pin   |   8051 Program - send ascii to port   |   8051 Program - serializing data   |   8051 Program - simple serial transmission   |   8051 Program - memory subroutines   |   8051 Program - math subroutines   |   8051 Program - conversion subroutines

List of topics: 8051

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