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C-1
C. INTERRUPT LINES
C.1
IRQ L
INES
The board is fully PC compatible with interrupt steering for PCI plug and play compatibility.
Controller # 1
Controller # 2
IRQ 0
Timer Output 0
IRQ 8
Real-Time Clock
IRQ 1
Keyboard (Output Buffer Full)
IRQ 9
Available
1
IRQ 2
Cascade Controller # 2
IRQ 10
Available
1
IRQ 3*
Serial Port 2
IRQ 11
Available
1
IRQ 4*
Serial Port 1
IRQ 12
PS/2 Mouse
IRQ 5*
Parallel Port 2 or Available
1
IRQ 13
Coprocessor Error
IRQ *6
Floppy Controller
IRQ 14
Primary IDE * or available
1
IRQ 7*
Parallel Port 1 or Available
1
IRQ 15
Secondary IDE * or available
1
* :All functions marked with an asterisk (*) can be disabled or reconfigured.
1
Available lines service on board and external PCI/ISA PnP devices or a Legacy ISA device.
C.2
DMA C
HANNELS
The cPCI-MXS64GX integrates the functionality of two 8237 DMA controllers. Eight
DMA channels are available.
According to Plug and Play standards, the system BIOS automatically allocates DMA
Channel 1 or 3 for the parallel port's ECP mode. Channel 2 is reserved for the floppy
controller and Channel 4 is used to cascade Channels 0 through 7 to the microprocessor.
DMA Channel
Function
DMA 0
Available
DMA 1
PnP available (ECP)
DMA 2
Floppy controller
DMA 3
PnP available (ECP)
DMA 4
Cascade controller # 1
DMA 5
PnP available
DMA 6
PnP available
DMA 7
PnP available
Содержание cPCI-MXS64GX
Страница 70: ...cPCI MXS64GX Technical Reference Manual 3 26 1 Rev...
Страница 82: ...4 SOFTWARE SETUPS 1 BIOS SETUP PROGRAM 2 VT100 MODE 4 PART...
Страница 108: ...D 1 D BOARD DIAGRAMS D 1 TOP DEVICES SURFACE MOUNT...
Страница 109: ...cPCI MXS64GX Technical Reference Manual D 2 D 2 ASSEMBLY BOTTOM DIAGRAM...
Страница 110: ...Board Specifications D 3 D 3 MOUNTING HOLES...