Samsung S3F80JB manual Pushui Push User Stack Incrementing, Pushui dst,src Operation IR ← IR +

Models: S3F80JB

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INSTRUCTION SET

S3F80JB

 

 

PUSHUI — Push User Stack (Incrementing)

PUSHUI dst,src

Operation: IR IR + 1

dst src

This instruction is used for user-defined stacks in the register file. PUSHUI increments the user stack pointer and then loads the contents of the source into the register location addressed by the incremented user stack pointer.

Flags: No flags are affected.

Format:

opc

dst

src

Bytes

Cycles

Opcode

Addr Mode

 

 

(Hex)

dst

src

3

8

83

IR

R

Example: Given: Register 00H = 03H, register 01H = 05H, and register 04H = 2AH:

PUSHUI @00H,01H

Register 00H = 04H, register 01H = 05H, register 04H = 05H

If the user stack pointer (register 00H, for example) contains the value 03H, the statement "PUSHUI @00H,01H" increments the user stack pointer by one, leaving the value 04H. The 01H register value, 05H, is then loaded into the location addressed by the incremented user stack pointer.

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Page 196
Image 196
Samsung S3F80JB manual Pushui Push User Stack Incrementing, Pushui dst,src Operation IR ← IR +