Has anyone tried to run the PPORT example in the "The windows 2000 Device Driver BOOK". Can you share your experience because I meet with problem described below. Or any comments will be appreciated.

I am trying to run a Chapter 8 PPort driver and testor software. However, the driver does not receive any interrrupt even though the interrupt signal is generated.

Capture from the DebugView shows this:
1) PPORT: Start I/O Operation
2) PPORT: StartIO: Transmitting first byte of 20
3) PPORT: TransmitByte: Sending 0x00 to port 378
4) PPORT: Wrote to Control: 0x03
5) PPORT: Read from Status: 0x027
6) PPORT: TransmitByte read charater: 0x40
7) PPORT: TransmitByte: generating interrupt

Afterwhich there is no more DebugPrints. However, I tried to add more and found that the interrupt signal ie pulsing the ACK is executed. But no interrupt happens.