Analog Devices adsp-2100 Manual page 405

PROGRAM FLOW
15
DO UNTIL
Instruction Format:
Do Until, Instruction Type 11:
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0
ADDR specifies the address of the last instruction in the loop. In the
Instruction Syntax, this field may be a program label or an immediate address
value.
TERM specifies the termination condition, as shown below:
TERM
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
15 – 82
0 1 0 1
Syntax Condition Tested
NE Not Equal to Zero
EQ Equal Zero
LE Less Than or Equal to Zero
GT Greater Than Zero
GE Greater Than or Equal to Zero
LT Less Than Zero
NOT AV Not ALU Overflow
AV ALU Overflow
NOT AC Not ALU Carry
AC ALU Carry
POS X Input Sign Positive
NEG X Input Sign Negative
NOT MV Not MAC Overflow
MV MAC Overflow
CE Counter Expired
FOREVER Always
Addr TERM