CHAPTER 17 ROM CORRECTION FUNCTION
User’s Manual U13850EJ4V0UM
420
17.2.2 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
Figure 17-3. Correction Request Register (CORRQ)
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 MPD703030A
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