Yamaha DRX-2 Service Manual page 25

Nucleus Name DS_NVRAM_Modify
Nucleus Number 303
Description Modifies one or more locations in NVRAM and updates the checksum of the section modified
Technical - Initialise IIC
- Decode user input
- Modify the NVRAM as indicated
- Validate the NVRAM by calculating the checksum and storing it
Execution Time Less than 1 second
User Input 1. The location that must be modified
i.e. "ALL" "BOOT" "DIAGNOSTICS" "DOWNLOAD" "CONFIG" "RECORDER" or no string if
an offset from the base address of the NVRAM is required
2. The offset and data which to put on the selected location
<offset> <length> <data>
Error Number
30300
30301
30302
30303
30304
30305
30306
30307
30308
30309
30310
Example DS:> 303 DIAGNOSTICS 5 1 0x5a
030300: Section is modified successfully
Test OK @
Nucleus Name DS_NVRAM_Read
Nucleus Number 304
Description Read out one or more locations in the NVRAM
Technical - Initialise IIC
- Decode user input
- Read from the NVRAM and return this info to the user
Execution Time Less than 1 second
User Input 1. The location which must be read i.e. "ALL" "BOOT" "DIAGNOSTICS" "DOWN LOAD"
"CONFIG" "RECORDER" or no string if an offset from the base address of the NVRAM is
required
2. The offset and number of bytes to read
<offset> <length>
Error Number
30400
30401
30402
30403
30404
30405
30406
30407
30408
Example 304 DIAGNOSTICS 0 6
030400: Value read = 0x00 0x00 0x00 0x00 0x00 0x5A
Test OK @
Description
Modifying the NVRAM contents succeeded
Unable to initialise NVM
Modifying the NVRAM contents failed
length out of range
unable to decode length
offset out of range
unable to decode offset
unknown location specified
no location is specified
number of values incorrect
There was an IIC error
Description
Value read
Unable to initialise NVM
Reading the NVRAM contents failed
length out of range
unable to decode length
offset out of range
unable to decode offset
unknown location specified
no location is specified
DRX-2
25