I am writing my own boot loader for a P89C668, and I would like for it to be backwards compatible with the Flash Magic tool.
I noticed that Flash Magic has the capability to reset the P89C668. I also noticed that the data sheet description of the supported ISP hex record commands does not include reset.
So how do you perform a chip reset? Are you making use of some of the undocumented ISP records and subfunctions? And if so, which ones do I need to support in order to run Flash Magic?
I noticed that Flash Magic has the capability to reset the P89C668. I also noticed that the data sheet description of the supported ISP hex record commands does not include reset.
So how do you perform a chip reset? Are you making use of some of the undocumented ISP records and subfunctions? And if so, which ones do I need to support in order to run Flash Magic?