INSTRUCTION DESCRIPTIONS
A - 78 INSTRUCTION SET DETAILS MOTOROLA
Operation: Assembler Syntax:
If cc, then enter the debug mode DEBUGcc
Description: If the specified condition is true, enter the debug mode and wait for OnCE
commands. If the specified condition is false, continue with the next instruction.
The term “cc” may specify the following conditions:
“cc” Mnemonic Condition
CC (HS) — carry clear (higher or same) C=0
CS (LO) — carry set (lower) C=1
EC — extension clear E=0
EQ — equal Z=1
ES — extension set E=1
GE — greater than or equal N ⊕ V=0
GT — greater than Z+(N ⊕ V)=0
LC — limit clear L=0
LE — less than or equal Z+(N ⊕ V)=1
LS — limit set L=1
LT — less than N ⊕ V=1
MI — minus N=1
NE — not equal Z=0
NR — normalized Z+(U•E)=1
PL — plus N=0
NN — not normalized Z+(U•E)=0
where
U denotes the logical complement of U,
+ denotes the logical OR operator,
• denotes the logical AND operator, and
⊕ denotes the logical Exclusive OR operator
Condition Codes:
The condition codes are not affected by this instruction.
DEBUGcc Enter Debug Mode Conditionally DEBUGcc
MR CCR
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LF DM T ** S1 S0 I1 I0 S L E U N Z V C