Filter
Top Products
197
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.96 CALL:D (Call Subroutine)
This is a branching instruction with a delay slot.
After saving the address of the next instruction after the delay slot to the "RP", branch
to the address indicated by "label12" relative to the value of the program counter (PC).
When calculating the address, double the value of "rel11" as a signed extension.
■ CALL:D (Call Subroutine)
Assembler format: CALL : D label12
Operation: PC + 4 → RP
PC + 2 + exts (rel11 × 2) → PC
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: 1 cycle
Instruction format:
NZVC
––––
MSB LSB
11011 rel11