Teknor Industrial Computers VIPer 821, Техническое справочное руководство

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VIPer 821 - Technical Reference Manual
B-2
B.3 IRQ LINES
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 * 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.
B.4 DMA CHANNELS
The board provides 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