Z89323 Datasheet, PDF (44/61 Pages) Zilog, Inc. – 16-BIT DIGITAL SIGNAL PROCESSORS

PRELIMINARY
ADDRESSING MODES
This section discusses the syntax of the addressing modes
supported by the DSP assembler.
Z89323/373/393
16-BIT DIGITAL SIGNAL PROCESSORS
Symbolic Name
<pregs>
<dregs>
(Points to RAM)
<hwregs>
<accind>
(Points to Program Memory)
<direct>
<limm>
<simm>
<regind>
(Points to RAM)
<memind>
(Points to Program Memory)
Table 15. Addressing Modes
Syntax
Description
Pn:b
Pointer Register
Dn:b
Data Register
X,Y,PC,SR,P
EXTn,A,BUS
@A
Hardware Registers
Accumulator Memory Indirect
<expression>
#<const exp>
#<const exp>
@Pn:b
@Pn:b+
@Pn:b–LOOP
@Pn:b+LOOP
@@Pn:b
@Dn:b
@@Pn:b–LOOP
@@Pn:b+LOOP
@@Pn:b+
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
Data Register Memory Indirect
Pointer Register Memory Indirect with Loop Decrement
Pointer Register Memory Indirect with Loop Increment
Pointer Register Memory Indirect with Increment
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DS95DSP0101 Q4/95