Freescale Semiconductor MC68332 - Data Registers

MC68332 CENTRAL PROCESSING UNIT
USER’S MANUAL 5-3
Figure 5-2 User Programming Model
Figure 5-3 Supervisor Programming Model Supplement
5.2.1 Data Registers
The eight data registers can store data operands of 1, 8, 16, 32, and 64 bits and ad-
dresses of 16 or 32 bits. The following data types are supported:
• Bits
• Packed Binary-Coded Decimal Digits
• Byte Integers (8 bits)
• Word Integers (16 bits)
• Long-Word Integers (32 bits)
• Quad-Word Integers (64 bits)
31 16 15 8 7 0
D0
D1
D2
D3 DATA REGISTERS
D4
D5
D6
D7
31 16 15 0
A0
A1
A2
A3 ADDRESS REGISTERS
A4
A5
A6
31 16 15 0
A7 (USP) USER STACK POINTER
31 0
PC PROGRAM COUNTER
70
CCR CONDITION CODE REGISTER
31 16 15 0
A7' (SSP) SUPERVISOR STACK
POINTER
15 8 7 0
(CCR) SR STATUS REGISTER
31 0
VBR VECTOR BASE REGISTER
20
SFC ALTERNATE FUNCTION
DFC CODE REGISTERS
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Freescale Semiconductor, Inc.
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