CHAPTER 17 ROM CORRECTION FUNCTION
User’s Manual U13850EJ6V0UD
520
(2) Correction request register (CORRQ)
CORRQ saves the channel in which ROM correction occurred. The JMP r0 instruction makes the program
jump to 00000000H after the correction address matches the fetch address. At this time, the program can
judge the following cases by reading CORRQ.
•
Reset input:
CORRQ = 00H
•
ROM correction generation:
CORRQn bit = 1 (n = 0 to 3)
•
Branch to 00000000H by user program: CORRQ = 00H
After reset:
00H
R/W
Address: FFFFF36EH
7
6
5
4
<3>
<2>
<1>
<0>
CORRQ
0
0
0
0
CORRQ3
CORRQ2
CORRQ1
CORRQ0
CORRQn
Channel n ROM correction request flag
0
No ROM correction request occurred.
1
ROM correction request occurred.
Remark
n = 0 to 3
Содержание V850/SB1
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