CENTRAL PROCESSING UNIT
MC68332
5-12
USER’S MANUAL
NOTE:
1. Privileged instruction.
5.8.1 M68000 Family Compatibility
It is the philosophy of the M68000 family that all user-mode programs can execute un-
changed on a more advanced processor, and supervisor-mode programs and excep-
tion handlers should require only minimal alteration.
The CPU32 can be thought of as an intermediate member of the M68000 Family. Ob-
ject code from an MC68000 or MC68010 may be executed on the CPU32, and many
of the instruction and addressing mode extensions of the MC68020 are also support-
ed. Refer to the CPU32 reference manual for a detailed comparison of the CPU32 and
MC68020 instruction set.
RTR
none
none
(SP)
⇒
CCR; SP + 2
⇒
SP; (SP)
⇒
PC;
SP + 4
⇒
SP
RTS
none
none
(SP)
⇒
PC; SP + 4
⇒
SP
SBCD
Dn, Dn
– (An), – (An)
8
8
Destination
10
– Source
10
– X
⇒
Destination
Scc
Í
8
If condition true, then destination bits are set to 1;
else, destination bits are cleared to 0
STOP
1
#<data>
16
Data
⇒
SR; STOP
SUB
<ea>, Dn
Dn, <ea>
8, 16, 32
Destination – Source
⇒
Destination
SUBA
<ea>, An
16, 32
Destination – Source
⇒
Destination
SUBI
#<data>, <ea>
8, 16, 32
Destination – Data
⇒
Destination
SUBQ
#<data>, <ea>
8, 16, 32
Destination – Data
⇒
Destination
SUBX
Dn, Dn
– (An), – (An)
8, 16, 32
8, 16, 32
Destination – Source – X
⇒
Destination
SWAP
Dn
16
TBLS/TBLU
<ea>, Dn
Dym : Dyn, Dn
8, 16, 32
Dyn – Dym
⇒
Temp
(Temp * Dn [7 : 0])
⇒
Temp
(Dym * 256) + Temp
⇒
Dn
TBLSN/TBLUN
<ea>, Dn
Dym : Dyn, Dn
8, 16, 32
Dyn – Dym
⇒
Temp
(Temp * Dn [7 : 0]) / 256
⇒
Temp
Dym + Temp
⇒
Dn
TRAP
#<data>
none
SSP – 2
⇒
SSP; format/vector offset
⇒
(SSP);
SSP – 4
⇒
SSP; PC
⇒
(SSP); SR
⇒
(SSP);
vector address
⇒
PC
TRAPcc
none
#<data>
none
16, 32
If cc true, then TRAP exception
TRAPV
none
none
If V set, then overflow TRAP exception
TST
Í
8, 16, 32
Source – 0, to set condition codes
UNLK
An
32
An
⇒
SP; (SP)
⇒
An, SP + 4
⇒
SP
Table 5-1 Instruction Set Summary
MSW LSW
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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