h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 50

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

2.2.2
• Address space
• Extended registers (En)
• Instruction set
• Exception vector table and memory indirect branch addresses
Rev. 2.00, 03/04, page 18 of 534
Linear access to a maximum address space of 16 Mbytes is possible.
The extended registers (E0 to E7) can be used as 16-bit registers. They can also be used as the
upper 16-bit segments of 32-bit registers or address registers.
All instructions and addressing modes can be used.
In advanced mode, the top area starting at H'00000000 is allocated to the exception vector
table in 32-bit units. In each 32 bits, the upper 8 bits are ignored and a branch address is stored
in the lower 24 bits (see figure 2.3). For details of the exception vector table, see section 4,
Exception Handling.
Advanced Mode
H'00000000
H'00000003
H'00000004
H'00000007
H'00000008
H'0000000B
H'0000000C
H'00000010
Figure 2.3 Exception Vector Table (Advanced Mode)
(Reserved for system
(Reserved for system
Reset exception vector
Exception vector 1
Reserved
Reserved
Reserved
use)
use)
Exception vector table