Pop From Stack - Samsung S3C9228 User Manual

S3C9228/P9228_UM_REV1.10
POP

— Pop From Stack

POP dst
Operation: dst ¨ @SP
SP ¨ SP + 1
The contents of the location addressed by the stack pointer are loaded into the destination. The
stack pointer is then incremented by one.
Flags: No flags affected.
Format:
opc
Examples: Given: Register 00H = 01H, register 01H = 1BH, SP (0D9H) = 0BBH, and stack register
0BBH = 55H:
POP
POP
In the first example, general register 00H contains the value 01H. The statement "POP 00H"
loads the contents of location 0BBH (55H) into destination register 00H and then increments the
stack pointer by one. Register 00H then contains the value 55H and the SP points to location
0BCH.
dst
→
00H
→
@00H
Bytes Cycles
2
Register 00H = 55H, SP = 0BCH
Register 00H = 01H, register 01H = 55H, SP = 0BCH
SAM88RCRI INSTRUCTION SET
Opcode Addr Mode
(Hex)
8 50
8 51
dst
R
IR
6-35