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Is it possible to have a separate bootloader and application in the same flash? The problem I see is hooking the interrupts from the low memory (the bootloader's to go into 0x0000)into the application which uses them. Do I have to compile these applications into one application, to get the interrupts hooked in? I'd rather these programs not be dependent on each other.
Why not use an ISP chip such as the Philips P89C51Rx2 or P89C66x with FlashMagic from http://www.esacademy.com. Atmel has the ISP T89C51Rx2. This eliminates the problem. Erik