Rom Version/Checksum - Yamaha RX-V667 Service Manual

RX-V667/HTR-6063/RX-A700
S4. ROM VERSION/CHECKSUM
The firmware version and checksum values are displayed.
The checksum is obtained by adding the data at every 8-bit and expressing the result as a 4-figure hexadecimal
notation.
* Numeric values in the figure are given as reference only.
54
S4-1. SYSTEM VERSION
The firmware version of this unit is displayed.
S4-2. MICROPROCESSOR VERSION
The firmware version of MICROPROCESSOR (IC908 DIGITAL P.C.B.) is displayed.
S4-3. MICROPROCESSOR CHECKSUM
The checksum value of MICROPROCESSOR (IC908 DIGITAL P.C.B.) is displayed.
S4-4. FLASH ROM VERSION
The firmware version of FLASH ROM (IC951 DIGITAL P.C.B.) is displayed.
S4-5. FLASH ROM CHECKSUM
The checksum value of FLASH ROM (IC951 DIGITAL P.C.B.) is displayed.
S4-6. VNP2 VERSION
Not for service.
S4-7. VNP2 CHECKSUM
Not for service.
S4-8. DSP1 VERSION
The firmware version of DSP1 (IC945 DIGITAL P.C.B.) is displayed.
S4-9. DSP1 CHECKSUM
The checksum value of DSP1 (IC945 DIGITAL P.C.B.) is displayed.
S4-10. INVALID ITEM
Not for service.