Motorola DSP56800 Manual page 401

TST
Instruction Fields:
Operation
TST
Data ALU Operation
Operation
TST
Timing: 2 + mv oscillator clock cycles
Memory:
1 program word
Test Accumulator
Operands C
F 2
Registers Memory Access
A
B
Instruction Set Details
W
1 Test 36-bit accumulator
Parallel Memory Read or Write
Source or Destination
X:(Rn)+
X:(Rn)+N
TST
Comments
X0
Y1
Y0
A1
B1
A
B
A-171