Hi,
Thanks Krohtec and Luciano for your reply. I could not make my point clear.

1. I have the complete ASCII/HEX/OCT reference
2. I have the complete EPSON ESCP Manual

I have grabbed some field data and saved them to a log file using my PIC18F4550s SPP feature. Now I need to parse the data or in other words understand what the control software is sending to the printer.

No opening the data in a HEX editor does the job and I can actually find out all the non-printable characters and so on. But it is a real pain as I have to manually check every byte.

So I was looking for some prog which would let me view the underlying ASCII code of non-printable characters easily.

My VB.net skill sucks!!! Still I am going to try write a log viewer. Actually this has been my requirement cause sometimes I would serially output some debug variable value and would not like its ASCII representation cause that kills more MCU cycles. For example say my ADC var is 215 then serial tx would be "2", "1", "5" which is at least three times the time taken to tx a single byte. Plus the overhead converting the binary value into ASCII representable value by the DEC funtion.

So the bottomline is I need a text/binary file viewer that easily lets me peek at the ASCII value of each character.