MC68HC908GT16 Datasheet, PDF (175/412 Pages) Motorola, Inc – Microcontrollers

Central Processor Unit (CPU)
Opcode Map
Table 10-1. Instruction Set Summary (Sheet 8 of 8)
Source
Form
Operation
Description
Effect on
CCR
VH I NZC
TXA
Transfer X to A
A ← (X)
– – – – – – INH
9F
1
TXS
Transfer H:X to SP
(SP) ← (H:X) – 1
– – – – – – INH
94
2
WAIT
Enable Interrupts; Stop Processor
I bit ← 0
– – 0 – – – INH
8F
1
A
C
CCR
dd
dd rr
DD
DIR
DIX+
ee ff
EXT
ff
H
H
hh ll
I
ii
IMD
IMM
INH
IX
IX+
IX+D
IX1
IX1+
IX2
M
N
Accumulator
Carry/borrow bit
Condition code register
Direct address of operand
Direct address of operand and relative offset of branch instruction
Direct to direct addressing mode
Direct addressing mode
Direct to indexed with post increment addressing mode
High and low bytes of offset in indexed, 16-bit offset addressing
Extended addressing mode
Offset byte in indexed, 8-bit offset addressing
Half-carry bit
Index register high byte
High and low bytes of operand address in extended addressing
Interrupt mask
Immediate operand byte
Immediate source to direct destination addressing mode
Immediate addressing mode
Inherent addressing mode
Indexed, no offset addressing mode
Indexed, no offset, post increment addressing mode
Indexed with post increment to direct addressing mode
Indexed, 8-bit offset addressing mode
Indexed, 8-bit offset, post increment addressing mode
Indexed, 16-bit offset addressing mode
Memory location
Negative bit
n Any bit
opr Operand (one or two bytes)
PC Program counter
PCH Program counter high byte
PCL Program counter low byte
REL Relative addressing mode
rel Relative program counter offset byte
rr Relative program counter offset byte
SP1 Stack pointer, 8-bit offset addressing mode
SP2 Stack pointer 16-bit offset addressing mode
SP Stack pointer
U Undefined
V Overflow bit
X Index register low byte
Z Zero bit
& Logical AND
| Logical OR
⊕ Logical EXCLUSIVE OR
( ) Contents of
–( ) Negation (two’s complement)
# Immediate value
« Sign extend
← Loaded with
? If
: Concatenated with
 Set or cleared
— Not affected
10.9 Opcode Map
See Table 10-2.
MC68HC908GT16 • MC68HC908GT8 — Rev. 2
MOTOROLA
Central Processor Unit (CPU)
Technical Data
175