Motorola M68000 - Single Operand Instruction Execution Times

MOTOROLA MC68000 8-/16-/32-MICROPROCESSORS USER’S MANUAL 8- 5
Table 8-5. Immediate Instruction Execution Times
Instruction Size op #, Dn op #, An op #, M
ADDI Byte, Word 8(2/0) —12(2/1)+
Long 16(3/0) —20(3/2)+
ADDQ Byte, Word 4(1/0) 4(1/0)* 8(1/1)+
Long 8(1/0) 8(1/0) 12(1/2)+
ANDI Byte, Word 8(2/0) —12(2/1)+
Long 14(3/0) —20(3/2)+
CMPI Byte, Word 8(2/0) —8(2/0)+
Long 14(3/0) —12(3/0)+
EORI Byte, Word 8(2/0) —12(2/1)+
Long 16(3/0) —20(3/2)+
MOVEQ Long 4(1/0) ——
ORI Byte, Word 8(2/0) —12(2/1)+
Long 16(3/0) —20(3/2)+
SUBI Byte, Word 8(2/0) —12(2/1)+
Long 16(3/0) —20(3/2)+
SUBQ Byte, Word 4(1/0) 8(1/0)* 8(1/1)+
Long 8(1/0) 8(1/0) 12(1/2)+
8.5 SINGLE OPERAND INSTRUCTION EXECUTION TIMES
Table 8-6 lists the timing data for the single operand instructions. The total number of
clock periods, the number of read cycles, and the number of write cycles are shown in the
previously described format. The number of clock periods, the number of read cycles, and
the number of write cycles, respectively, must be added to those of the effective address
calculation where indicated by a plus sign (+).
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