Freescale Semiconductor, Inc.
5.7.3.7 BINARY-CODED DECIMAL AND EXTENDED INSTRUCTIONS. The BCD and
extended instruction table indicates the number of clock periods needed for the processor
to perform the specified operation using the specified addressing mode. No additional
tables are needed to calculate total effective execution time for these instructions. 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
Dn, Dm
Head
Tail
0
Cycles
4(0/1/0)
12(2/1/1)
4(0/1/0)
12(2/1/1)
2(0/1/0)
10(2/1/1)
2(0/1/0)
10(2/1/1)
8(2/1/0)
ABCD
ABCD
SBCD
SBCD
ADDX
ADDX
SUBX
SUBX
CMPM
2
2
2
2
0
2
0
2
1
−(An), −(Am)
Dn, Dm
2
0
−(An), −(Am)
Dn, Dm
2
0
−(An), −(Am)
Dn, Dm
2
0
−(An), −(Am)
(An)+, (Am)+
2
0
5-106
MC68340 USER’S MANUAL
MOTOROLA
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