Typewriter User Manual

MOTOROLA MC68340 USER’S MANUAL 5-105
5.7.3.6 IMMEDIATE ARITHMETIC/LOGIC INSTRUCTIONS. The immediate
arithmetic/logic instruction table indicates the number of clock periods needed for the
processor to fetch the source immediate data value and to perform the specified
arithmetic/logic instruction using the specified addressing mode. Footnotes indicate when
to account for the appropriate fetch effective or fetch immediate EA times. The total
number of clock cycles is outside the parentheses. The numbers inside parentheses
(r/p/w) are included in the total clock cycle number. All timing data assumes two-clock
reads and writes.
Instruction Head Tail Cycles
MOVEQ #, Dn
0 0 2(0/1/0)
ADDQ #, Rn
0 0 2(0/1/0)
ADDQ #, 〈FEA〉
0 3 5(0/1/x)
SUBQ #, Rn
0 0 2(0/1/0)
SUBQ #, 〈FEA〉
0 3 5(0/1/x)
ADDI #, Rn
0 0 2(0/1/0)∗
ADDI #, 〈FEA〉
0 3 5(0/1/x)∗
ANDI #, Rn
0 0 2(0/1/0)∗
ANDI #, 〈FEA〉
0 3 5(0/1/x)∗
EORI #, Rn
0 0 2(0/1/0)∗
EORI #, 〈FEA〉
0 3 5(0/1/x)∗
ORI #, Rn
0 0 2(0/1/0)∗
ORI #, 〈FEA〉
0 3 5(0/1/x)∗
SUBI #, Rn
0 0 2(0/1/0)∗
SUBI #, 〈FEA〉
0 3 5(0/1/x)∗
CMPI #, Rn
0 0 2(0/1/0)∗
CMPI #, 〈FEA〉
0 3 5(0/1/x)∗
X = There is one bus cycle for byte and word operands and two bus cycles for long-
word operands. For long-word bus cycles, add two clocks to the tail and to the
number of cycles.
∗= An # fetch EA time must be added for this instruction: 〈FEA〉 +〈FEA〉 + 〈OPER〉
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