Table of Contents
Advertisement
CHAPTER 24 ROM CORRECTION FUNCTION
Figure 24-2. ROM Correction Operation and Program Flow
Reset & start
Initialize microcontroller
Set CORADn register
Load program for judgment
of ROM correction and
correction codes
Set CORCN register
CORENn bit = 1?
Fetch address
= CORADn?
Change fetch code to
DBTRAP instruction
Execute DBTRAP instruction
Jump to address 00000060H
Branch to ROM correction
judgment address
CORADn = DBPC − 2?
Branch to correction code address
of corresponding channel n
Execute correction code
Write return address to
DBPC.
Write value of PSW to
DBPSW as necessary.
Execute DBRET instruction
Remarks 1.
: Processing by user program (software)
: Processing by ROM correction (hardware)
2. n = 0 to 3
User's Manual U16896EJ2V0UD
Read data for setting ROM
correction from external memory
No
Yes
Execute fetch code
No
Yes
Execute fetch code
No
ILGOP processing
Yes
623
Advertisement
Table of Contents
