Computer Hardware User's Guide

Subtract Integer With Borrow, 3-Operand SUBB3
13-225 Assembly Language Instructions
Example SUBB3 R5,*AR5++(IR0),R0
Before Instruction After Instruction
R0 00 0000 0000 R0 00 0000 0032
R5 00 0000 00C7 R5 00 0000 00C7
AR5 80 9800 AR5 80 9804
IR0 4 IR0 4
LUF 0 LUF 0
LV 0 LV 0
UF 0 UF 0
N 0 N 0
Z 0 Z 0
V 0 V 0
C 1 C 0
Data memory
809800h 0FA 809800h 0FA
250
50
199199
250
Note: Cycle Count
See subsection 8.5.2,
Data Loads and Stores , on page 8-24 for the effects
of operand ordering on the cycle count.