R0E436640CPE00 User’s Manual
4 Hardware Specifications
REJ10J0918-0300 Rev.3.00 February 15, 2007
Page 77 of 102
4.6.2 Precautions for the H8/3672 Series
(1) The hardware manual says “Initial value = 1. These are reserved bits. When read, they always show the value 1.” On
the other hand, the compact emulator stipulates that
these bits must always be set to 0, and that when read, these bits
show the set value.
H’FFE0
Port Mode Register 1
Bit 3
(2) The hardware manual says “Initial value = 0. These are reserved bits. When read, they always show the value 0.” On
the other hand, the compact emulator stipulates that
these bits must always be set to 0, and that when read, these bits
show the set value.
H’FFE0
Port Mode Register 1
Bits 6, 5, 2, 0
H’FFF1
System Control Register 2
Bits 5, 1, 0
H’FFF2
Interrupt Edge Select Register 1
Bits 7, 2, 1
H’FFF4
Interrupt Enable Register 1
Bits 6, 2, 1
H’FFF9
Module Standby Control Register 1
Bits 7, 0
(3) Although these bits in the hardware manual are reserved bits, the compact emulator stipulates that
these bits must
always be set to 0, and that when read, these bits show the set value.
H’FFE2
Port Mode Register 3
Bits 7--3
H’FFF5
Interrupt Enable Register 2
Bits 7--5
H’FFFA
Module Standby Control Register 2
Bits 7--0
H’FFFB
Module Standby Control Register 3
Bit 0
(4) Although the hardware manual says that registers are located at the addresses shown below, the compact emulator
stipulates that
writing to the addresses has no effect, and that when read, they show indeterminate values.
This is
because no registers exist at these addresses in the compact emulator.
H’FF90
Flash Memory Control Register 1
Bits 7--0
H’FF91
Flash Memory Control Register 2
Bits 7--0
H’FF93
Block Specification Register 1
Bits 7--0
H’FF9B
Flash Memory Enable Register
Bits 7--0
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