ymf740c ETC-unknow, ymf740c Datasheet - Page 35

• Manufacturer Part Number: ymf740c
• Description: Ds-1l
• Manufacturer: ETC-unknow

YMF740C
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.
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.
IRQ10
IRQ11
INTA#
IRQ5
IRQ7
IRQ9
ISA IRQ
INTA
-35-
IMOD=1
IMOD=0
IMOD=1
IMOD=0
IMOD
Select Signal
Select Signal
IRQ
IRQ
SBIRQ[2:0]
MPUIRQ[2:0]
Sound Blaster Pro
PCI Audio
January 14, 1999
MPU401