Maxim Integrated MAX31782 - Manual (Page 202)

MaximIntegrated 20-19
MAX31782 User’s Guide
Revision 0; 8/11
RET ReturnfromSubroutine
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) .
StatusFlags: 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
RETC/RETNC,RETZ/RETNZ,RETS ConditionalReturnonStatusFlag
Description: Performs conditional return (RET) based upon the state of a specific processor status flag . RET C
returns if the Carry flag is set while RET NC returns if the Carry flag is clear . RET Z returns if the
Zero flag is set while RET NZ returns if the Zero flag is clear . RET S returns if the Sign flag is set .
See RET for additional information on the return operation .
StatusFlags: None
RETC C=1: IP ← @SP--
Operation: C=0: IP ← IP + 1
Encoding: 15 0
1010 1100 0000 1101
Example(s): RET C ; C=1, return (RET) is performed