INSTRUCTION DESCRIPTIONS
MOTOROLA INSTRUCTION SET DETAILS A - 201
Instruction Format:
( . . . . . ) L:aa,D
( . . . . . ) S,L:aa
Opcode:
Instruction Fields:
aa=6-bit Absolute Short Address=aaaaaa
Register W Absolute Short Address aaaaaa
Read S 0 000000
Write D 1 •
•
111111
SDD
S S1 S2 S/L D D1 D2 Sign Ext Zero L L L
A10 A1 A0 no A10 A1 A0 no no 0 0 0
B10 B1 B0 no B10 B1 B0 no no 0 0 1
X X1 X0 no X X1 X0 no no 0 1 0
Y Y1 Y0 no Y Y1 Y0 no no 0 1 1
AA1A0yes AA1A0 A2 no 100
BB1B0yes BB1B0 B2 no 101
AB A B yes AB A B A2,B2 A0,B0 1 1 0
BA B A yes BA B A B2,A2 B0,A0 1 1 1
Timing: mv oscillator clock cycles
Memory: mv program words
L: Long Memory Data Move L:
23 16 15 8 7 0
0 1 0 0 L 0 L L W 0 a a a a a a INSTRUCTION OPCODE