Z89323 Zilog., Z89323 Datasheet - Page 44

• Manufacturer Part Number: Z89323
• Description: 16-BIT DIGITAL SIGNAL PROCESSORS
• Manufacturer: Zilog.

ADDRESSING MODES
This section discusses the syntax of the addressing modes
supported by the DSP assembler.
Symbolic Name
< p r e g s >
< d r e g s >
(Points to RAM)
<hwregs>
<accind>
(Points to Program Memory)
<direct>
<limm>
<simm>
<regind>
(Points to RAM)
<memind>
(Points to Program Memory)
44
Syntax
Pn:b
Dn:b
X,Y,PC,SR,P
EXTn,A,BUS
@A
#<const exp>
#<const exp>
@Pn:b
@Pn:b+
@Pn:b–LOOP
@Pn:b+LOOP
@@Pn:b
@@Pn:b–LOOP
@@Pn:b+LOOP
@@Pn:b+
<expression>
@Dn:b
P R E L I M I N A R Y
Table 15. Addressing Modes
Description
Pointer Register
Data Register
Hardware Registers
Accumulator Memory Indirect
Direct Address Expression
Long (16-bit) Immediate Value
Short (8-bit) Immediate Value
Pointer Register Indirect
Pointer Register Indirect with Increment
Pointer Register Indirect with Loop Decrement
Pointer register Indirect with Loop Increment
Pointer Register Memory Indirect
Pointer Register Memory Indirect with Loop Increment
Pointer Register Memory Indirect with Increment
Pointer Register Memory Indirect with Loop Decrement
Data Register Memory Indirect
16-B
DS95DSP0101 Q4/95
IT
D
IGITAL
S
IGNAL
Z89323/373/393
P
ROCESSORS