Maxim-integrated DS4830 Optical Microcontroller Manual de usuario Pagina 208

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DS4830 User’s Guide
208
Operation: SP ++SP
Encoding: 15 0
f000
1101
ssss
ssss
Example(s): PUSH GR ; GR=0F3Fh
PUSH #40h
Stack Data:
xxxxh
0040h
SP (after PUSH #40h)
0F3Fh
SP (after PUSH GR)
xxxxh
SP (initial)
xxxxh
RET Return from subroutine
Description: RET pops a single word from the stack (@SP) into the Instruction Pointer (IP) and decrements
the stack pointer (SP). The decremented SP is saved as the new stack pointer (SP).
Status Flags: None
Operation: IP @ SP--
Encoding: 15 0
1000
1100
0000
1101
Example(s): RET
Code Execution:
Addr (IP)
Opcode
0311h
0312h
RET
0103h
Stack Data:
xxxxh
xxxxh
0103h
SP (before RET)
xxxxh
SP (after RET)
xxxxh
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