can9999
asked on
printer port control..
How can I read data from printer port ?
If the setting is ..
LPT1(0x378)..
And How can I write data ?
It's hurry,,...
Thank U !
If the setting is ..
LPT1(0x378)..
And How can I write data ?
It's hurry,,...
Thank U !
ASKER CERTIFIED SOLUTION
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ASKER
In your code...
you only read from printer port 0x378.
Is there a anything to initial for reading port ?
What is SPP and .. ?
outp(0x37a, 0x20);
^ some people says above line for reading..
Had you trid it ?
you only read from printer port 0x378.
Is there a anything to initial for reading port ?
What is SPP and .. ?
outp(0x37a, 0x20);
^ some people says above line for reading..
Had you trid it ?
oh for reading use
MyData = inp(0x378);
and for writing use
outp(0x378, MyData);
Hope this helps...
-Viktor
--Ivanov
MyData = inp(0x378);
and for writing use
outp(0x378, MyData);
Hope this helps...
-Viktor
--Ivanov
Why did you give me a C? What's wrong with what I said?
I gave you all the needed info... What more do you want?
-Viktor
--Ivanov
-Viktor
--Ivanov
ASKER
nothing..
that's enough !
thank U everybody..
that's enough !
thank U everybody..
What do you mean? I was asking you why you gave me so low grade when I gave you all the needed info?!?!
ASKER
OK !
I'll explain everything..... ^-^
There are several modes for parallel port operating (EPP, BI-DIR, SPP.... etc)
- I don't know what those mean, besides SPP and BI-DIR.
It' is impossible to read data from DATA BUS(d0~d7) of printer port...with using the method what you said alone....
Some steps remain.
1. Set Printer Mode BI-DIR or SPP....
2. Outp(0x37a, 0x20) <- this command means " I'll read DATA from now "
3. and then READ !
tmpData = Inp(0x378)
4. If you want to write data,
Outp(0x37a, 0x00) <- " I'll write DATA from now "
That's all....
Bye !
I'll explain everything..... ^-^
There are several modes for parallel port operating (EPP, BI-DIR, SPP.... etc)
- I don't know what those mean, besides SPP and BI-DIR.
It' is impossible to read data from DATA BUS(d0~d7) of printer port...with using the method what you said alone....
Some steps remain.
1. Set Printer Mode BI-DIR or SPP....
2. Outp(0x37a, 0x20) <- this command means " I'll read DATA from now "
3. and then READ !
tmpData = Inp(0x378)
4. If you want to write data,
Outp(0x37a, 0x00) <- " I'll write DATA from now "
That's all....
Bye !
i just think it wasn't appropriate...
outp() and outport()
e.g.
outp(0x378, MyData);
outport(0x378, MyData);
There are other functions that I can look up for you if you need them and are similar to these two i just gave you...
The code I sent above was in assembler so you can use it if oyu want, but I think these two functions are easier to use...
-Viktor
--Ivanov