Action

P1 and P3 are special function registers that are treated as variables.

 

 

Syntax

Px = var

var = Px

 

 

Remarks

 

Note that other processors can have more ports such as P0, P2, P4 etc.

When you select the proper .DAT file you can also use these ports as variables.

In fact you can use any SFR as a byte variable in BASCOM.

 

ACC = 0  'will reset the accumulator for example

 

See hardware for a more detailed description of the ports.

 

Example

Dim A As Byte , B1 As Bit

A = P1                                   'get value from port 1

A = A Or 2                               'manipulate it

P1 = A                                   'set port 1 with new value

P1 = &B10010101                           'use binary notation

P1 = &HAF                                 'use hex notation

B1 = P1.1                                 'read pin 1.1

P1.1 = 0                                 'set it to 0