Motorola DragonBall MC68328 User Manual page 16

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Figure 1-2. Supervisor Programmer's Model Supplement
3. Bytes (8 bits)
4. Words (16 bits)
5. Long words (32 bits)
In addition, operations on other data types such as memory addresses, status word data,
etc. are provided in the instruction set.
The 14 address modes listed in Table 1-1 include six basic types:
1. Register direct
2. Register indirect
3. Absolute
4. Program counter relative
MOTOROLA MC68328 DRAGONBALL PROCESSOR USER'S MANUAL
16 15
8
16 15
16 15
Figure 1-1. User Programming Model
16 15
8 7
15
7 0
D0
D1
D2
D3
DATA REGISTERS
D4
D5
D6
D7
0
A0
A1
A2
A3 ADDRESS REGISTERS
A4
A5
A6
0
A7 (USP) USER STACK POINTER
0
PC PROGRAM COUNTER
7 0
CCR STATUS REGISTER
0
A7 (SSP) SUPERVISOR STACK
POINTER
0
SR STATUS REGISTER
Overview
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