Table 6-2 Instruction Formats - Motorola DSP56800 Manual

Instruction Set Introduction
1
Opcode Operands
ADD #$1234,Y1
ANDC #$7C,X:$E27
ENDDO
TSTW X:(SP-9)
MAC A1,Y0,B
LEA (R2)-
MOVE
CMP X0,B
NEG A
SUB Y1,A
MPY X1,Y0,B
MACR X0,Y0,A
MOVE
JMP $3C10
1. Indicates data ALU, AGU, program controller, or bit-manipulation operation to be performed.
2. Specifies the operands used by the opcode.
3. Specifies optional data transfers over the CGDB bus.
4. Specifies optional data transfers over the XDB2 bus.
5. Specifies optional data transfers over the PDB bus.
6-4
Table 6-2. Instruction Formats
CGDB XDB2
2
3
Transfer Transfer
R0,Y0
Y0,X:(R2)+
X:(R1)+N,X0
X:(R0)+,Y0 X:(R3)+,X0
X:(R1)+N,Y1 X:(R3)+,X0
X:(R1)+N,Y0 X:(R3)-,X0
DSP56800 Family Manual
PDB
4 5
Transfer
No parallel move
No parallel move
No parallel move
No parallel move
No parallel move
No parallel move
No parallel move
Single parallel move
Single parallel move
Dual parallel read
Dual parallel read
Dual parallel read
X0,P:(R1)+ Program memory move
16-bit jump address
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