Fujitsu FR60 Hardware Manual page 527

CHAPTER 19 PROGRAM LOADER MODE (SUPPORTED ONLY BY THE MB91302A (IPL INTEGRATED MODEL))
❍ Subroutine "Command Reception" in Synchronous mode
One - byte data reception (command data)
8 - byte data reception (Download information data)
Download destination address 4 bytes
+
Number of download bytes 4 bytes
1- byte data reception (Checksum data)
Receive command
1- byte transmission (dummy)
Receive Data ?
YES
1-byte data reception (command data)
Received data = 18
NO
1- byte transmission (dummy)
Receive Data ?
YES
1-byte transmission (dummy)
1- byte data reception (Download information data)
Increment the received data storage address
Count the number of reception times
Number of reception times = 8 ?
( 8 - byte data reception )
Receive Data ?
YES
1- byte data reception (Checksum data) :
The lower eight bits are fetched from command data
and download information data
(amounting to nine bytes).
:
(Checksum)
YES
EXIT
00
H
NO
YES
?
H
00
H
NO
00
H
NO
YES
NO
added together
NO
RESET
Checksum error
507