MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 139
MC68HC708AS48
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MC68HC708AS48
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FREESCALE [Freescale Semiconductor, Inc]
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1.MC68HC708AS48.pdf
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9.6.1.2 SWI Instruction
MC68HC708AS48
MOTOROLA
NOTE:
—
Rev. 4.0
The SWI instruction is a non-maskable instruction that causes an
interrupt regardless of the state of the interrupt mask (I bit) in the
condition code register.
A software interrupt pushes PC onto the stack. A software interrupt does
not push PC – 1, as a hardware interrupt does.
System Integration Module (SIM)
Figure 9-11
INT1
INT2
CLI
LDA
PSHH
PULH
RTI
PSHH
PULH
RTI
.
#$FF
Interrupt Recognition Example
INT1 INTERRUPT SERVICE ROUTINE
INT2 INTERRUPT SERVICE ROUTINE
System Integration Module (SIM)
Program Exception Control
Advance Information
BACKGROUND
ROUTINE
139
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