question on parallel port

[Leibnitz]

Hi,
i would like to ask about reading data from control port?

control port one of the registers of parallel port.

if i made a program to read data from this register what is the maximum value i got from this port?

this code shows how to read control port( 890 = address of it)
code : start
Dim invalue As Byte
invalue = PortIn(890)
code : finish

i want to know what should be the possible values of invalue variable???

 

[johnwm]

Any variable declared as Byte can only take integer values from 0 to 255

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[Leibnitz]

Thanks for that, i didn't recognize my decalration to byte, since i was thinking that the control register has 5 bits and each one could take 2 values either 0 or 1 so i thought the range of values would be between 0 and 32 (00000-11111).

so could you tell me how i could make the control register itself determine the value. i mean what type definition i should use instead of byte.