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3 break address registers a to c (bara to barc) – Renesas H8S/2111B User Manual

Page 105

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Rev. 1.00, 05/04, page 71 of 544

5.3.3 Break

Address Registers A to C (BARA to BARC)

The BAR registers specify an address that is to be a break address. An address in which the first
byte of an instruction exists should be set as a break address. In normal mode, addresses A23 to
A16 are not compared.

• BARA

Bit Bit

Name

Initial
Value R/W Description

7
to
0

A23
to
A16

All 0

R/W

Addresses 23 to 16

The A23 to A16 bits are compared with A23 to A16 in
the internal address bus.

• BARB

Bit Bit

Name

Initial
Value R/W Description

7
to
0

A15
to
A8

All 0

R/W

Addresses 15 to 8

The A15 to A8 bits are compared with A15 to A8 in the
internal address bus.

• BARC

Bit Bit

Name

Initial
Value

R/W Description

7
to
1

A7
to
A1

All 0

R/W

Addresses 7 to 1

The A7 to A1 bits are compared with A7 to A1 in the
internal address bus.

0 — 0 R Reserved

This bit is always read as 0 and cannot be modified.

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