Motorola DSP56800 Manual page 154

Instruction Set Introduction
Table 6-24. Data ALU Arithmetic Instructions (Continued)
Operation
CMP
DEC(W)
DIV
INC(W)
NEG
RND
SBC
SUB
TFR
TST
6-22
Operands C
DD,FDD 2
F1,DD
~F,F
X:(SP-xx),FDD 6
X:aa,FDD 4
X:xxxx,FDD 6
#xx,FDD 4
#xxxx,FDD 6
FDD 2
X:(SP-xx) 8
X:aa 6
X:xxxx 8
DD,F 2
FDD 2
X:(SP-xx) 8
X:aa 6
X:xxxx 8
F 2
F 2
Y,F 2
DD,FDD 2
F1,DD
~F,F
Y,F
X:(SP-xx),FDD 6
X:aa,FDD 4
X:xxxx,FDD 6
#xx,FDD 4
#xxxx,FDD 6
DD,F 2
A,B 2
B,A 2
F 2
DSP56800 Family Manual
W Comments
1 36-bit compare of two accumulators or data registers.
1 Compare memory word with 36-bit accumulator.
1
X:aa represents a 6-bit absolute address. Refer to
2
Absolute Short Address (Direct Addressing): <aa>
on page 4-22
Note: Condition codes set based on 36-bit result
1 Compare accumulator with an immediate integer 0–31.
2 Compare accumulator with a signed 16-bit immediate.
1 Decrement word.
1 Decrement word in memory using appropriate
addressing mode.
1
2
1 Divide iteration.
1 Increment word.
1 Increment word in memory using appropriate address-
ing mode.
1
2
1 Two's-complement negation.
1 Round.
1 Subtract with carry (set C bit also).
1 36-bit subtract of two registers. 16-bit source registers
are first sign extended internally and concatenated
with 16 zero bits to form a 36-bit operand.
1 Subtract memory word from register.
X:aa represents a 6-bit absolute address. Refer to
1
Absolute Short Address (Direct Addressing): <aa>
2
on page 4-22
1 Subtract an immediate value 0–31.
2 Subtract a signed 16-bit immediate.
1 Transfer register to register.
1 Transfer one accumulator to another (36-bits).
1 Transfer one accumulator to another (36-bits).
1 Test 36-bit accumulator.