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Change the offset for the interrupt vector

Ingvar Kreft

Hi
I working with 89c669 and want to change the program start address to 0x016000h.
But when I try to change the Interrupt vector to that address I get
"Invalid Interrupt Vector Address !"
Why can't i use a Address greater than 0xffff?

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  • 0 in reply to Ingvar Kreft

    I didn't think the '669 supported any more than the usual 64k for the code and data areas. For all intents and purposes, the '669 is just a C51 with a few enhancements. Short of having code banking, I doubt the '669 will go past 0xffff for addresses. If we were talking about a C251 then that is a different kettle of fish.

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  • 0 in reply to Ingvar Kreft

    I didn't think the '669 supported any more than the usual 64k for the code and data areas. For all intents and purposes, the '669 is just a C51 with a few enhancements. Short of having code banking, I doubt the '669 will go past 0xffff for addresses. If we were talking about a C251 then that is a different kettle of fish.

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