Analog Devices adsp-2100 - Page 405

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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 0 1 0 1 Addr TERM
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 Syntax Condition Tested
0 0 0 0 NE Not Equal to Zero
0 0 0 1 EQ Equal Zero
0 0 1 0 LE Less Than or Equal to Zero
0 0 1 1 GT Greater Than Zero
0 1 0 0 GE Greater Than or Equal to Zero
0 1 0 1 LT Less Than Zero
0 1 1 0 NOT AV Not ALU Overflow
0 1 1 1 AV ALU Overflow
1 0 0 0 NOT AC Not ALU Carry
1 0 0 1 AC ALU Carry
1 0 1 0 POS X Input Sign Positive
1 0 1 1 NEG X Input Sign Negative
1 1 0 0 NOT MV Not MAC Overflow
1 1 0 1 MV MAC Overflow
1 1 1 0 CE Counter Expired
1 1 1 1 FOREVER Always
PROGRAM FLOW
DO UNTIL