How to avoid DCD?

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How to avoid DCD?

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modem status interrupt on DCD pin

Hi All, I need to generate an interrupt on DCD pin . How can I do this for null modem ? I shorted pins 1, 4 and 6 of the port and trying to toggle bit 0 in MCR register and enabled bit 3 in IER...
modem status interrupt on DCD pin

Hi All, I need to generate an interrupt on DCD pin . How can I do this for null modem ? I shorted pins 1, 4 and 6 of the port and trying to toggle bit 0 in MCR register and enabled bit 3 in IER...
DCD 80390 core support by Keil compiler

I would like to understand how is the DCD 80390 family supported by the compiler. How is the code below 64K treated - is the assembly code generated uses 8051 or 80390 instruction sets? Is there is...