FAQs for MON-186


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Why does emulator crash after a target RESET? (80186)
Ref: 0063

PIO29/S6 at the 18xEM/ES/ER must be programmed as S6 signal. Therefore monitor program initializes PIO DIRECTION REGISTER 1 (offset: 78h) to 0dfffh (instead of 0ffffh). It is important to initialize PIO DIRECTION REGISTER 1 with the first executed instructions after RESET.

Why does manual break fail? (80186)
Ref: 0060

Check that there is enough space left on the stack before and after the execution of the instruction (see Restrictions for stack requirements). Check exception control (x.nmipol +, x.nmibreak on) and NMI connection from EPROM simulator to target. Make sure that the NMI vector (2) is valid and points to the correct Monitor entry.

Why does manual break fail? (80386)
Ref: 0060

Check that there is enough space left on the stack before and after the execution of the instruction (see Restrictions for stack requirements). Check exception control (x.nmipol +, x.nmibreak on) and NMI connection from EPROM simulator to target. Make sure that the NMI vector (2) is valid and points to the correct Monitor entry.




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Last generated/modified: 14-Nov-2019