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?
I was looking at the appnote http://www.keil.com/support/docs/189 but this is for C51 how can I do this on CX51
Open START_MX.A51 Can't find CSEG at 0000h
Try to write CSEG at 816000h gets ERROR
"START_MXB.A51(139): error A80: INVALID ABSOLUTE BASE/OFFS VALUE"
Try to write CSEG at 8000h gets no ERROR
but take a look in the HEX file and see that the program starts at 0x0000h
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.
669 supports up to 8MB of extern program and 8MB Data memory.
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