Rom Ver/Sum - Yamaha RX-V365 Service Manual

RX-V365/HTR-6230

14. ROM VER/SUM

The firmware version and checksum values are displayed.
The checksum is obtained by adding the data at every 8 bits for each program area and expressing the result as a 4
figure hexadecimal data.
38
Version
Firmware version of microprocessor (IC101 DSP P.C.B.) is displayed.
All checksum
Checksum value of microprocessor (IC101 DSP P.C.B.) is displayed.
Program checksum
Checksum value of application and standby code program is displayed.
SPI (Serial Peripheral Interface) checksum
Checksum value of SPI firmware update code is displayed.
SPD (S/PDIF) checksum
Checksum value of SPD firmware update code is displayed.
FlashROM test
The read/write test of microprocessor (IC101 DSP P.C.B.) and flash ROM (IC201 DSP P.C.B.).
NoEr: No error detected
SDRAM test
The read/write test of microprocessor (IC101 DSP P.C.B.) and SDRAM (IC202 DSP P.C.B.).
NoEr: No error detected
EEPROM test
The read/write test of microprocessor (IC101 DSP P.C.B.) and EEPROM (IC102 DSP P.C.B.).
NoEr: No error detected
NG: An error is detected
NG: An error is detected
NG: An error is detected