How to write a program for IRQ7?

Posted on 2003-03-13
Medium Priority
Last Modified: 2008-02-01
Hello, All,

I would like to write an assembly code in MASM32 for Win2000 platform to handle the IRQ7 from parallel port.  The ISR will read the 8-bit data appears on the parallel port data line and store to a user buffer area.  Can anyone help?

Thanks a lot,

Question by:chen_ing
LVL 11

Expert Comment

ID: 8134233
As far as I know you need to write Win2000 driver to handle IRQ inder Win2000. You can't simply hook BIOS interrupt 0Fh that corresponds to IRQ7. Moreover you even
can't use IN and OUT commands in user application in Win2000. You can do this only from the driver or you can
also use special trick that allows I/O commands.

Expert Comment

ID: 8142521
1.You can refer the ParPort sample under DDK.
2.You also can simply implement a filter driver hook the generic parallel driver.

Accepted Solution

modulo earned 0 total points
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