Hi,

Been into studying serial and parallel programming
And had several companion books and tutorials I've downloaded from
websites.

I am intermediate on C, but I know how the structure are for

My only problem boils down to whenever I follow a sample, I'm always
puzzled on where the hex was based on.

I think, the problem is the samples are not showing any standard bios
memory map, or is it?


Here's a sample:

....

If (select=='1') offset = 0x08;
If (select=='2') offset = 0x0a;
If (select=='3') offset = 0x0c;
Dport = peek(0x40, offset);


What are these hexs basis?
Dunno where they got it.
Never mentioned in the samples nor in the book

Got this programming the parallel port by D.V.G

Any help

Thanks!

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