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| H83397 Datasheet, PDF (118/747 Pages) Renesas Technology Corp – Single-Chip Microcomputer | |||
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PCH
SP
PCL
SP
R1L
H'FECC
PCL
H'FECD
SP
H'FECF
BSR instruction
MOV.B R1L, @âR7
H'FECF set in SP
PC is improperly stored
beyond top of stack
PCH is lost
PCH: Upper byte of program counter
PCL: Lower byte of program counter
R1L: General register
SP: Stack pointer
Figure 4.9 Example of Damage Caused by Setting an Odd Address in SP
88
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