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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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YMF754-R Arkusz danych(PDF) 16 Page - YAMAHA CORPORATION |
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YMF754-R Arkusz danych(HTML) 16 Page - YAMAHA CORPORATION |
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16 / 60 page  YMF754 June 28, 1999 -16- 2C-2Dh: Subsystem Vendor ID Read Only Default: 1073h Access Bus Width: 8, 16, 32-bit b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 Subsystem Vendor ID b[15:0] ........Subsystem Vendor 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. 2E-2Fh: Subsystem ID Read Only Default: 0012h Access Bus Width: 8, 16, 32-bit b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 Subsystem ID b[15:0] ........Subsystem ID 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, 0012h. 34h: Capability Register Pointer Read Only Default: 50h Access Bus Width: 8, 16, 32-bit b7 b6 b5 b4 b3 b2 b1 b0 Capability Register Pointer b[7:0] ..........Capability Register Pointer This register indicates the offset address of the Capabilities register in the PCI Configuration register when 58-59h: ACPI Mode register, ACPI bit is “0”. DS-1E provides PCI Bus Power Management registers as the capabilities. The Power Management registers are mapped to 50h - 55h in the PCI Configuration register, and this register indicates “50h”. When ACPI bit is “1”, this register indicates “00h”. |
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