Routines for interfacing with the floppy disc controller. More...

Typedefs
typedef enum fdc_registers_t	fdc_registers_t
	Floppy Disk Controller (FDC) registers.

Enumerations
enum	fdc_registers_t { STATUS_REGISTER_A = 0x3F0 , STATUS_REGISTER_B = 0x3F1 , DOR = 0x3F2 , TAPE_DRIVE_REGISTER = 0x3F3 , MAIN_STATUS_REGISTER = 0x3F4 , DATARATE_SELECT_REGISTER = 0x3F4 , DATA_FIFO = 0x3F5 , DIGITAL_INPUT_REGISTER = 0x3F7 , CONFIGURATION_CONTROL_REGISTER = 0x3F7 }
	Floppy Disk Controller (FDC) registers. More...

Functions
int	fdc_initialize (void)
	Initializes the floppy disk controller. More...

int	fdc_finalize (void)
	De-initializes the floppy disk controller. More...

Detailed Description

Routines for interfacing with the floppy disc controller.

Enumeration Type Documentation

Floppy Disk Controller (FDC) registers.

Enumerator
STATUS_REGISTER_A	This register is read-only and monitors the state of the interrupt pin and several disk interface pins.
STATUS_REGISTER_B	This register is read-only and monitors the state of several isk interface pins.
DOR	The Digital Output Register contains the drive select and motor enable bits, a reset bit and a DMA GATE bit.
TAPE_DRIVE_REGISTER	This register allows the user to assign tape support to a particular drive during initialization.
MAIN_STATUS_REGISTER	The Main Status Register is a read-only register and is used for controlling command input and result output for all commands.
DATARATE_SELECT_REGISTER	This register is included for compatibility with the 82072 floppy controller and is write-only.
DATA_FIFO	All command parameter information and disk data transfers go through the FIFO.
DIGITAL_INPUT_REGISTER	This register is read only in all modes.
CONFIGURATION_CONTROL_REGISTER	This register sets the datarate and is write only.

int fdc_finalize ( void )

De-initializes the floppy disk controller.

int fdc_initialize ( void )

Initializes the floppy disk controller.