YMF744B ETC [List of Unclassifed Manufacturers], YMF744B Datasheet - Page 16

• Manufacturer Part Number: YMF744B
• Description: DS-1S
• Manufacturer: ETC [List of Unclassifed Manufacturers]

YMF744B
2C-2Dh: Subsystem Vendor ID
2E-2Fh: Subsystem ID
b[15:0] ........Subsystem Vendor ID
b[15:0] ........Subsystem ID
This register contains the Subsystem Vendor ID. In general, this ID is used to distinguish adapters or
systems made by different IHVs using the same chip by the same vendor. This register is read only. To
write the IHV’s Vendor ID, use 44-45h (Subsystem Vendor ID Write Register). IHVs must change this
ID to their Vendor ID in the BIOS POST routine.
In case of the system such as Sound Card which BIOS can not control, this ID can be changed by
connecting EEPROM externally. Then, Subsystem Vendor ID Write Register is invalid.
In case EEPROM is not externally, the default value is the YAMAHA's Vendor ID, 1073h.
This register contains the Subsystem ID. In general, this ID is used to distinguish adapters or systems
made by different IHVs using the same chip by the same vendor. This register is read only. To write
the IHV's Device ID, use 46-47h (Subsystem ID Write Register). IHVs must change this ID to their ID
in the BIOS POST routine.
In case of the system such as Sound Card which BIOS can not control, this ID can be changed by
connecting EEPROM externally. Then, Subsystem ID Write Register is invalid.
In case EEPROM is not externally, the default value is the YAMAHA's Device ID, 0010h.
b15
b15
Read Only
Default: 1073h
Access Bus Width: 8, 16, 32-bit
Read Only
Default: 0010h
Access Bus Width: 8, 16, 32-bit
b14
b14
b13
b13
b12
b12
b11
b11
b10
b10
b9
b9
Subsystem Vendor ID
-16-
Subsystem ID
b8
b8
b7
b7
b6
b6
b5
b5
b4
b4
b3
b3
February 3, 1999
b2
b2
b1
b1
b0
b0