Renesas H8SX/1520 Series Hardware Manual page 693

(g)
User-Boot Program Sum Check
The boot program will return the byte-by-byte total of the contents of the bytes of the user-boot
program, as a four-byte value.
Command
• Command, H'4A, (one byte): Sum check for user-boot program
Response
• Response, H'5A, (one byte): Response to the sum check of user-boot program
• Size (one byte): The number of bytes that represents the checksum
This is fixed to 4.
• Checksum of user boot program (four bytes): Checksum of user boot MATs
The total of the data is obtained in byte units.
• SUM (one byte): Sum check for data being transmitted
(h) User-Program Sum Check
The boot program will return the byte-by-byte total of the contents of the bytes of the user
program.
Command
• Command, H'4B, (one byte): Sum check for user program
Response
• Response, H'5B, (one byte): Response to the sum check of the user program
• Size (one byte): The number of bytes that represents the checksum
This is fixed to 4.
• Checksum of user boot program (four bytes): Checksum of user MATs
The total of the data is obtained in byte units.
• SUM (one byte): Sum check for data being transmitted
(i)
User Boot MAT Blank Check
The boot program will check whether or not all user boot MATs are blank and return the result.
Command
• Command, H'4C, (one byte): Blank check for user boot MAT
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H'4A
H'5A Size Checksum of user boot program
H'4B
H'5B Size Checksum of user program
H'4C
Section 17 Flash Memory (0.18-(m F-ZTAT Version)
SUM
SUM
Rev. 3.00 Mar. 14, 2006 Page 655 of 804
REJ09B0104-0300