FAQs Archive for ROM Monitor


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Why does single step or breakpoint not work?
Ref: 0061

Check that there is enough space left on the stack before and after the execution of the instruction. See "Restrictions for Stack Requirements". Make sure that the single step and INT3 vector (1 + 3) are valid and point to the correct monitor entry.

Why does stepping fail, when executing a MOV SP,xxx instruction?
Ref: 0062

Check that there is enough space left on the stack before and after the execution of the instruction. See "Restrictions for Stack Requirements".
Check that the value for the CP is within limits for the CPU and that the register space is not beeing overwritten by the stack. See "Restrictions for Stack Requirements".

Why does the ROM monitor crash after modification of EPROM?
Ref: 0056

Check that there is enough space left on the stack. See also "Restrictions for Stack Requirements".




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