Datasheet

Table Of Contents
Section 2 CPU
Rev. 2.00 Jul. 04, 2007 Page 35 of 692
REJ09B0309-0200
(8) Memory Indirect@@aa:8
This mode can be used by the JMP and JSR instructions. The instruction code contains an 8-bit
absolute address specifying a memory operand. This memory operand contains a branch address.
The memory operand is accessed in words, generating a 16-bit branch address. Figure 2.8 shows
how to specify branch address for in memory indirect mode. The upper bits of the absolute address
are all assumed to be 0, so the address range is 0 to 255 (H'0000 to H'00FF).
Note that the first part of the address range is also the exception vector area.
Specified
by @aa:8
Branch address
Figure 2.8 Branch Address Specification in Memory Indirect Mode