[Moved] How to extract pic18f2455 firmware

Hi

I have no experience with this processor. I purchased DIY's USB IO Kit and it seems there is no support for PortB interrupt on Pin-change
Can i add small interrupt routine that will send back to my PC an "I" transaction ?
To do that i need to read the firmware by setting registers (by C# prog. on my PC) and reverse the object code to Assembly.
How do i do that ?

With some guess-work i may find the address of the "I" routine and then use it within the int. routine
I'm not sure it's doable , maybe there is easier way ?

Any feedback is appreciated

Ben

Re: How to extract pic18f2455 firmware

**broken link removed**

Re: How to extract pic18f2455 firmware

Thanks. How would you read out the PIC firmware ? (DIY usb io kit) to get the machine code

Re: How to extract pic18f2455 firmware

BR-99 said:

Thanks. How would you read out the PIC firmware ? (DIY usb io kit) to get the machine code

Click to expand...

Usually its can be done with PIC programmer.

Re: How to extract pic18f2455 firmware

Hi

Does any one has .lst (or hex) file of Electronics-DIY USB IO Board Kit ?
Which inexpensive in-circuit programmer / debugger would you recommend ?

Thanks

A PICkit 2 clone with fulfill your requirements.

If purchases from eBay are possible, PICkit 2 clones are available in the $5 to $20 range.

The PC side interface is USB, so you can use it with your laptop and provides programming, reading and in-circuit debugging features.

**broken link removed**

**broken link removed**

The PICkit 2 Clones are compatible with software freely available from the Microchip website.


BigDog

Many thanks for your elaborated reply
--------------------------------------------------

bigdogguru said:

A PICkit 2 clone with fulfill your requirements.

If purchases from eBay are possible, PICkit 2 clones are available in the $5 to $20 range.

The PC side interface is USB, so you can use it with your laptop and provides programming, reading and in-circuit debugging features.

**broken link removed**

**broken link removed**

The PICkit 2 Clones are compatible with software freely available from the Microchip website.


BigDog

Click to expand...