Yamaha DRX-2 Service Manual page 24

DRX-2
Nucleus Name
Nucleus Number
Description
Technical
Execution Time
User Input
Error
Example
Nucleus Name
Nucleus Number
Description
Technical
Execution Time
User Input
Error
Example
24
DS_NVRAM_WriteRead
301
Check whether the EEPROM can be written to and read from
- Initialise IIC
- Backup data from location to modify
- Write to location and read it back again
- Write back the backed up data to the location to leave the nvram as found
Less than 1 second
None
Number Description
30100 The write-read test succeeded
30101 The IIC bus could not be initialised
30102 There was an NVRAM IO error
30103 The value could not be read back from the NVRAM
DS:> 301
030100:
Test OK @
DS_NVRAM_Clear
302
Make the EEPROM empty, containing all zeroes.
- Initialise IIC
- Create a memory block filled with zeroes
- Write this block to the NVRAM
16 seconds
None
Number Description
30200 The clearing of the NVRAM succeeded
30201 There was an IIC error
30202 Clearing the NVRAM failed
DS:> 302
030200:
Test OK @