114
Chapter 18. H8/500 Dependent Features
18.2.3. Addressing Modes
as understands the following addressing modes for the H8/500:
Rn
Register direct
@Rn
Register indirect
@(d:8, Rn)
Register indirect with 8 bit signed displacement
@(d:16, Rn)
Register indirect with 16 bit signed displacement
@ Rn
Register indirect with pre decrement
@Rn+
Register indirect with post increment
@aa:8
8 bit absolute address
@aa:16
16 bit absolute address
#xx:8
8 bit immediate
#xx:16
16 bit immediate
18.3. Floating Point
The H8/500 family has no hardware floating point, but the
.float
directive generates ieee floating 
point numbers for compatibility with other development tools.
18.4. H8/500 Machine Directives
as
has no machine dependent directives for the H8/500. However, on this platform the
.int
and
.word
directives generate 16 bit numbers.






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