Yamaha DRX-2 Service Manual page 28

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
Nucleus Name
Nucleus Number
Description
Technical
Execution Time
User Input
Error
Example
28
DS_FLASH_Read
502
Read from a specific memory address in FLASH
- Decode the user input and check the ranges and whether the address is aligned on 4
bytes
- Read the data and return this to the user
Less than 1 seconds.
The location from which data must be read
( FLASH starts at address 0xB8000000 )
Number Description
50200 Reading the FLASH succeeded
50201 Reading the FLASH failed; Wrong user input
50202 Address is not dividable by 4
DS:> 502 0xb8000000
050200: Value read = 0x3C08A000
Test OK @
DS_FLASH_ChecksumProgram
503
Check the checksum of the application partitions by recalculating and comparing partition
checksums
- Determine the number of segments
- Find the application in each segment and determine its checksum
- Check whether the checksums stored match the newly calculated
6 seconds
None
Number Description
50300 The checksum is valid, the test succeeded
50301 The checksum is invalid
DS:> 503
050300:
BootCode checksum is: 0xBABE5B6F, which is correct
Diagnostics checksum is : 0xBABEBAFF, which is correct
Download checksum is: 0xBABEEDBF, which is correct
Application checksum is : 0xBABE8EEC, which is correct
Test OK @
DS_FLASH_CalculateChecksum
504
Calculate the checksum over all memory addresses. Used to check entire FLASH contents
- Run the checksum calculation algorithm all addresses
6 seconds
None
Number Description
50400 Calculating the checksum over all addresses succeeded
DS:> 504
050400: The Checksum = 0xBABE30A4
Test OK @