Interrupt Request; Onboard Pci-Eide; Onboard Multi-I/O - TMC AI5TV User Manual

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

2.8 Onboard PCI-EIDE

The PCI-EIDE controller is part of the 430VX PCIset. It supports PIO
mode 3/4 and bus mastering . The peak transfer rate of PIO mode 3/4
can be as high as 17MB/sec. Using HDDs that support bus mastering,
the peak transfer rate can reach 22MB/sec.
There are two IDE connectors, primary IDE and secondary IDE. With
two devices per connector, up to four IDE drives are supported.

2.9 Onboard Multi-I/O

The onboard multi-I/O chip, Winbond W83877, provides two serial
port, one parallel port and one floppy controller. The serial ports are
16550 UART compatible. The parallel port supports high speed
EPP/ECP mode.
The floppy controller supports up to 2.88 MB format. The I/O port
addresses of the serial and parallel ports are programmable via BIOS
set-up. Each I/O can be individually disabled.
AI5TV Motherboard User's Manual
Chapter 2 Hardware Description
Function
System Timer Output
Keyboard
Interrupt Cascade
Serial Port #2
Serial Port #1
Parallel Port #2
Floppy Disk Controller
Parallel Port #1
Real Time Clock
Software Redirected to Int 0Ah
Reserved
Reserved
Reserved
80287
Primary IDE
Secondary IDE
9