Ampro Corporation 486E manual Floppy Interface Enable, IDE Interface Enable, Hot Key Setup Enable

Little Board™/486e Technical Manual

Floppy Interface Enable

Enable or disable the onboard floppy interface. When disabled, the I/O ports assigned to the floppy controller become available, allowing them to be used by other devices installed on the expansion bus. Table 2–56 lists the resources used by the floppy controller.

Table 2–56. Floppy Controller Resources

Selection	I/O Address	IRQ	DMA
Enabled	03F2h - Digital Output Register	IRQ6	DMA 2
	03F4h - Main Status Register
	03F5h - Data Register
	03F7h - Control Register
Disable	None	None	None

IDE Interface Enable

Enable or disable the onboard IDE hard disk interface. When disabled, the I/O ports and IRQ assigned to the IDE controller become available, allowing them to be used by other devices installed on the expansion bus. Table 2–57 lists the resources used by the IDE interface.

Table 2–57. IDE Controller Resources

Selection	I/O Address	Interrupt
Enabled	01F0h - 01F7 Control and Data Registers	IRQ14
	03F7h Shared with FDC
Disable	None	None

If an IDE drive is attached to J6, disabling the IDE interface does not free the IRQ14 interrupt since it is connected directly to the drive. The cable must be disconnected.

Hot Key Setup Enable

In some embedded systems, end-users are not permitted to use the hot-keysequence (CTRL-ALT- ESC) to enter SETUP. Hot key access to SETUP can be enabled or disabled using this parameter. This also prevents “+++” from entering SETUP when using the serial console feature.

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