🚀 go-pugleaf

In article <#5SATlxv$GA.170@net003s>,
  "MS Lucas" <famlucas@famlucas.penguinpowered.com> wrote:
> How can i use an i/o port off my computer in CBuilder ?
> I want to read/write data from/to an i/o port. In Pascal you can use
the
> command port[address] := value but what is the equivalent of this in C
>
> Question 2
> How can I use basic code in a C program. The reason is that I'm
writing a
> program for a CPU on an add-on card that is using a basic-dialect.
>
> Maurice Lucas

Since other people are giving platform specific advice, I'll chip in my
two cents:

The method I use to access hardware is to use a pointer and assign the
hardware item's address into the pointer.  The pointer's type depends on
the data width of the hardware item.  For example:

const volatile unsigned int * Uart_Base_Ptr =
    (volatile unsigned int *) (0xFFFD0000);

and
unsigned int Uart_Value = *Uart_Base_Ptr;

Just remember that you want to make sure that the pointer points to a
volatile location because the hardware devices may change their data
values without telling the program.


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