Chapter 6. System Compatibility
The APIC resources are made available to the operating system via a software table. The following table
details the hardware connections on the system board that are relevant.
Diskette Drives and Controller
The following table shows the reading, writing, and formatting capabilities for the diskette drive type
supported by IntelliStation M Pro computers.
Copy Protection
The following methods of copy protection might not work in systems using the 3.5-inch, 1.44 MB diskette
drive.
Bypassing BIOS routines:
– Data transfer rate: BIOS selects the proper data transfer rate for the media being used.
– Diskette parameter table: Copy protection, which creates its own diskette parameter table, might
not work in these drives.
Table 34. IO APIC Resources
IO APIC Input
Bus Connection
Notes
7
INT0
INTR
8259 Output
INT1
IRQ 1
Legacy Connection - Keyboard
INT2
IRQ 0
Legacy Connection - Timer
INT3
IRQ 3
Legacy Connection - COM 2
INT4
IRQ 4
Legacy Connection - COM 1
INT5
IRQ 5
Legacy Connection
INT6
IRQ 6
Legacy Connection - Diskette
INT7
IRQ 7
Legacy Connection - LPT1
INT8
IRQ 8
Legacy Connection - RTC
INT9
IRQ 9
Legacy Connection
INT10
IRQ 10
Legacy Connection
INT11
IRQ 11
Legacy Connection
INT12
IRQ 12
Legacy Connection - Mouse
INT13
IRQ 13
Legacy Connection - Math coprocessor
INT14
IRQ 14
Legacy Connection - IDE primary
INT15
IRQ 15
Legacy Connection
INT16
PCI INT 1
IOAPIC mode only
INT17
PCI INT 2
IOAPIC mode only
INT18
PCI INT 3
IOAPIC mode only
INT19
PCI INT 4
IOAPIC mode only
Table 35. 3.5-Inch Diskette Drive Reading, Writing, and Formatting Capabilities
Diskette Drive Type
720 KB Mode
1.44 MB Mode
2.88 MB Mode
1.44 MB drive
RWF
RWF
Not supported
7
Connections noted here are typical only, and may be modified by software control.
34
Technical Information Manual
