Oki Dr.63514, User Manual, Page: 40 / 101

Chapter 2. Functions
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M1 M1 M2 M1
S1 S2 S1 S2 S1 S2 S1 S2 S1
M1
External break occurs
System clock
M1S1
EXT.BRK
External break
request
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(5) Power down (HALT) break
If these breaks are enabled, a HALT instruction produces a break request of this type.
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Note 6
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The HALT instruction produces a temporary transition to halt mode followed by an immediate
return. Restarting real-time emulation without specifying a starting address causes execution
to resume from the instruction after the HALT instruction.
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(6) Call stack overflow break
If these breaks are enabled, stack over- or underflow in the call stack pointer (SP) as the result of
pushing onto or popping from that stack during real-time emulation produces a break request of this
type.
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Note 7
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When a call stack push/pop is performed, if the emulator detects a stack pointer overflow or
underflow, then it will output a call stack overflow break request.
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Reference
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The stack size appears in the user's manual for the target microcontroller.
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(7) Register stack overflow break
If these breaks are enabled, stack over- or underflow in the register stack pointer (RSP) as the result of
pushing onto or popping from that stack during real-time emulation produces a break request of this
type.
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Note 8
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