IBM 4840-563 System Reference Manual page 74

Function
(return status)
Get Configuration
(return status)
Start Update Mode
Commit
Configuration
Custom
Configuration
Enable/Disable
Start Command
Mode
Start Functional
Mode
All changes to the configuration word are stored in RAM until a Commit Configuration command is sent. A
commit configuration command stores the configuration word into flash where it is retrieved the next time
power is restored.
General command format:
:nnxxxxiiccddss
beginning of command marker
:
number of command bytes beyond the id byte in hexadecimal.
nn
16 bit Don't care address bytes not used for MSR control commands.
xxxx
Command id byte, should be "11" for MSR commands.
ii
Hexadecimal format MSR command ID byte.
cc
0 to 16 bytes of data in hexadecimal format.
dd
hexadecimal format checksum byte. The sum of this number and all the other bytes in the command
ss
after the beginning of the command marker should equal zero.
If the sum of all the bytes in the command is not zero or if the command is not a valid command then the MSR returns
'X'. a '.' is returned for successful commands. Commands requiring return data return either a '.' followed by
a return data string or 'X'.
Update mode details
The code update command interface is to comply with the in circuit programming specification described in Philips
Semiconductors application note AN461 2002 Jun 24 for the Philips 89C51Rx2 device. In general the microcontroller
program will enter the in circuit programming code when a start update mode command is sent. An example would be if
SurePOS 500 Model XX3 Technical Reference, v 1.3
Success Response
".:nn0000117F<b1><b2><b3><b4><b5
><revision string[11]><ss>"
"."
"."
"."
"."
"."
Fail Response
"X"
"X"
"X"
"X"
"X"
"X"
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