参数资料
型号: S5933QE
厂商: APPLIEDMICRO INC
元件分类: 总线控制器
英文描述: PCI BUS CONTROLLER, PQFP160
封装: PLASTIC, QFP-160
文件页数: 109/176页
文件大小: 823K
代理商: S5933QE
3-46
S5933
PCI CONFIGURATION REGISTERS
INTERRUPT LINE REGISTER (INTLN)
Register Name:
Interrupt Line
Address Offset:
3Ch
Power-up value:
FFh
Boot-load:
External nvRAM offset
7Ch
Attribute:
Read/Write
Size:
8 bit
This register indicates the interrupt routing for the
S5933 controller. The ultimate value for this register
is system-architecture specific. For x86 based PCs,
the values in this register correspond with the estab-
lished interrupt numbers associated with the dual
8259 controllers used in those machines. In x86-
based PC systems, the values of 0 to 15 correspond
with the IRQ numbers 0 through 15, and the values
from 16 to 254 are reserved. The value of 255 (the
controller’s default power-up value) signifies either
“unknown” or “no connection” for the system inter-
rupt. This register is boot-loaded from the external
boot memory, if present, and may be written by the
PCI interface.
7
0
1
FFh
5
Bit
Value
6
42
3
Figure 13. Interrupt Line Register
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