Analog Devices adsp-2100 User Manual

3Program Control
3 – 25
Syntax Status Condition True If:
EQ Equal Zero AZ = 1
NE Not Equal Zero AZ = 0
LT Less Than Zero AN .XOR. AV = 1
GE Greater Than or Equal Zero AN .XOR. AV = 0
LE Less Than or Equal Zero (AN .XOR. AV) .OR. AZ = 1
GT Greater Than Zero (AN .XOR. AV) .OR. AZ = 0
AC ALU Carry AC = 1
NOT AC Not ALU Carry AC = 0
AV ALU Overflow AV = 1
NOT AV Not ALU Overflow AV = 0
MV MAC Overflow MV = 1
NOT MV Not MAC Overflow MV = 0
NEG X Input Sign Negative AS = 1
POS X Input Sign Positive AS = 0
NOT CE Not Counter Expired —
FLAG_IN* FI pin Last sample of FI pin = 1
NOT FLAG_IN* Not FI pin Last sample of FI pin = 0
* Only available on JUMP and CALL instructions.
Table 3.9 IF Condition Logic
3.7 TOPPCSTACK
A special version of the Register-to-Register Move instruction, Type 17, is
provided for reading (and popping) or writing (and pushing) the top
value of the PC stack. The normal POP PC instruction does not save the
value popped from the stack, so to save this value into a register you must
use the following special instruction:
reg = TOPPCSTACK; {pop PC stack into reg}
{“toppcstack” may also be
lowercase}
The PC stack is also popped by this instruction, after a one-cycle delay.
A NOP should usually be placed after the special instruction, to allow the
pop to occur properly:
reg = TOPPCSTACK;
NOP; {allow pop to occur correctly}

Analog Devices adsp-2100 Specifications

General

Brand	Analog Devices
Model	adsp-2100
Category	Computer Hardware
Language	English