Hitachi H8/3006 Hardware Manual page 681

IOAR0A—I/O Address Register 0A
7
Bit
Initial value
Read/Write R/W
668
6 5
R/W R/W R/W
Short address mode : source or destination address
Full address mode
H'FFF26
4 3
Undetermined
R/W R/W
: not used
DMAC0
2 1 0
R/W R/W