9.10.2.3 Addressing Modes

as understands the following addressing modes for the H8/300:

r n

Register direct

@r n

Register indirect

@( d , r n )

@( d :16, r n )

@( d :24, r n )

Register indirect: 16-bit or 24-bit displacement d from register n. (24-bit displacements are only meaningful on the H8/300H.)

@r n +

Register indirect with post-increment

@-r n

Register indirect with pre-decrement

@ aa

@ aa :8

@ aa :16

@ aa :24

Absolute address aa. (The address size :24 only makes sense on the H8/300H.)

# xx

# xx :8

# xx :16

# xx :32

Immediate data xx. You may specify the :8, :16, or :32 for clarity, if you wish; but as neither requires this nor uses it—the data size required is taken from context.

@@ aa

@@ aa :8

Memory indirect. You may specify the :8 for clarity, if you wish; but as neither requires this nor uses it.

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