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参数资料
| 型号： | YMF744B |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | DS-1S |
| 中文描述： | 的DS - 1秒 |
| 文件页数： | 7/60页 |
| 文件大小： | 303K |
| 代理商： | YMF744B |
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YMF744B
February 3, 1999
-15-
14-17h: Legacy Audio I/O Base Address (Dummy for SB, FM, MPU, D-DMA)
Read / Write
Default: 00000001h
Access Bus Width: 8, 16, 32-bit
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
IOBASE0
-
I/O
b31
b30
b29
b28
b27
b26
b25
b24
b23
b22
b21
b20
b19
b18
b17
b16
-
b0................IO
(Read Only)
This bit indicates that the base address is assigned to I/O. This bit is hardwired to “1”.
b[15:6] ........IOBASE0
This register is used so that the OS may secure I/O resources for Sound Blaster Pro, FM Synthesizer,
MPU401 and D-DMA controller.
Because this register is a dummy one, each for the I/O addresses of
the above blocks is assigned with the I/O addresses set to 4C-4Dh and 60-65h respectively by the software
driver.
18-1Bh: Legacy Audio I/O Base Address (Dummy for Joystick)
Read / Write
Default: 00000001h
Access Bus Width: 8, 16, 32-bit
b15
B14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
IOBASE1
-
I/O
b31
B30
b29
b28
b27
b26
b25
b24
b23
b22
b21
b20
b19
b18
b17
b16
-
b0................IO
(Read Only)
This bit indicates that the base address is assigned to I/O. This bit is hardwired to “1”.
b[15:2] ........IOBASE1
This register is used so that the OS may secure I/O resource for the joystick port.
Because this register is
a dummy one, the joystick I/O address is assigned with the I/O address set to 66-67h by the software
driver.
相关PDF资料 |
PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| YMF744BR | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Industrial Control IC |
| YMF744BV | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Industrial Control IC |
| YMF752 | 制造商:YAMAHA 制造商全称:YAMAHA CORPORATION 功能描述:AC97 Rev2.1 Audio CODEC with SRC |
| YMF752-S | 制造商:YAMAHA 制造商全称:YAMAHA CORPORATION 功能描述:AC97 Rev2.1 Audio CODEC with SRC |
| YMF753 | 制造商:YAMAHA 制造商全称:YAMAHA CORPORATION 功能描述:AC97 Revision2.2 Audio CODEC with Digital Audio I/F |
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