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CCR
PC
SP
SR
SSP
USP
FC
DFC
SFC
+
–
∗
=
≠
>
≥
<
≤
•
+
⊕
not
BCD
LSW
MSW
{R/W}
In description of an operation, a destination operand is placed to the right of source
operands, and is indicated by an arrow (→).
MOTOROLA
4-4
Condition code register (lower byte of status register)
X — extend bit
N — negative bit
Z — zero bit
V — overflow bit
C — carry bit
Program counter
Active stack pointer
Status register
Supervisor stack pointer
User stack pointer
Function code
Destination function code register
Source function code register
Addition or post increment
Subtraction or predecrement
/
Division or conjunction
Multiplication
Equal to
Not equal to
Greater than
Greater than or equal to
Less than
Less than or equal to
Boolean AND
Boolean OR
Boolean XOR (exclusive OR)
Boolean complement (operand is inverted)
Binary coded decimal, indicated by subscript
Example: Source
Least significant word
Most significant word
Read/write indicator
INSTRUCTION SET
is a BCD source operand.
10
CPU32
REFERENCE MANUAL
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