Interrupt Request (Irq) Lines; Onboard Pci-Ide; Dma Channels - TMC MI7WBM SERIES User Manual

3.8 Interrupt Request (IRQ) Lines

There are a total of 15 IRQ lines available on the motherboard. Peripheral
devices use an interrupt request to notify the CPU for the service
required. The following table shows the IRQ lines used by the devices on
the motherboard:
Level
IRQ0
IRQ1
IRQ2
IRQ8
IRQ9
IRQ10
IRQ11
IRQ12
IRQ13
IRQ14
IRQ15
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7

3.9 Onboard PCI-IDE

The Intel 810 chipset's built-in's PCI-IDE controller supports PIO mode
3/4 and bus mastering Ultra DMA/66 / Ultra DMA/33. The peak transfer
rate of PIO mode 3/4 can be as high as 17MB/sec. Using HDDs that
support Ultra DMA/66, the peak transfer rate can reach 66MB/sec. The
peak transfer rate of PIO mode 3/4 can be as high as 17MB/sec. There are
two IDE connectors - primary IDE and secondary IDE. With two devices
per connector, up to four IDE devices can be supported.

3.10 DMA Channels

There are seven DMA channels available on the motherboard; only
DMA2 is used by the floppy controller. In the case that ECP mode on the
parallel port is utilized, DMA1 or DMA3 will be used.
MI7WBM User's Manual
Chapter 3 Hardware Description
Function
System Timer Output
Keyboard
Interrupt Cascade
Real Time Clock
Software Redirected to Int 0Ah
Reserved
Reserved
Reserved
Co-Processor
Primary IDE
Secondary IDE
INTERRUPT
Serial Port #1
INTERRUPT
Floppy Disk Controller
Parallel Port #1
9