参数资料
型号: YMF740C
厂商: Electronic Theatre Controls, Inc.
英文描述: DS-1L
中文描述: 的DS - 1公升
文件页数: 29/44页
文件大小: 224K
代理商: YMF740C
YMF740C
January 14, 1999
-35-
4. Interrupt Routing
DS-1L supports two types of interrupts, interrupt signal on the PCI bus (INTA#) and interrupt signal on the
ISA bus (IRQ[5,7,9,10,11]).
The IRQs on DS-1L are routed as shown below.
Sound Blaster Pro
MPU401
IRQ
Selector
IRQ
SBIRQ[2:0]
ISA IRQ
MPUIRQ[2:0]
IMOD
IMOD=1
IMOD=0
IMOD=1
IMOD=0
Select Signal
IRQ5
IRQ7
IRQ9
IRQ10
IRQ11
INTA#
INTA
PCI Audio
PCI Audio can only use INTA#, but the Sound Blaster Pro and MPU401 blocks of the Legacy Audio Block
can use any of the two protocols.
The protocol can be switched using 42-43h (Legacy Audio Control Register) of the PCI Configuration
Register.
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