87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/*
|
|
* floppy.h
|
|
*
|
|
* Created on: Aug 20, 2011
|
|
* Author: Tiberiu
|
|
*/
|
|
|
|
#ifndef FLOPPY_H_
|
|
#define FLOPPY_H_
|
|
|
|
#include <types.h>
|
|
|
|
enum FloppyRegisters
|
|
{
|
|
FloppyRegisterStatusA = 0x3F0, // read-only
|
|
FloppyRegisterStatusB = 0x3F1, // read-only
|
|
FloppyRegisterDigitalOutput = 0x3F2,
|
|
FloppyRegisterTapeDrive = 0x3F3,
|
|
FloppyRegisterMainStatus = 0x3F4, // read-only
|
|
FloppyRegisterDatarateSelect = 0x3F4, // write-only
|
|
FloppyRegisterFIFO = 0x3F5,
|
|
FloppyRegisterDigitalInput = 0x3F7, // read-only
|
|
FloppyRegisterConfigurationControl = 0x3F7 // write-only
|
|
};
|
|
|
|
enum FloppyCommands
|
|
{
|
|
FloppyCommandReadTrack = 2, // generates IRQ6
|
|
FloppyCommandSpecify = 3, // * set drive parameters
|
|
FloppyCommandSenseDriveStatus = 4,
|
|
FloppyCommandWriteData = 5, // * write to the disk
|
|
FloppyCommandReadData = 6, // * read from the disk
|
|
FloppyCommandRecalibrate = 7, // * seek to cylinder 0
|
|
FloppyCommandSenseInterrupt = 8, // * ack IRQ6, get status of last command
|
|
FloppyCommandWriteDeletedData = 9,
|
|
FloppyCommandReadID = 10, // generates IRQ6
|
|
FloppyCommandReadDeletedData = 12,
|
|
FloppyCommandFormatTrack = 13, // *
|
|
FloppyCommandSeek = 15, // * seek both heads to cylinder X
|
|
FloppyCommandVersion = 16, // * used during initialization, once
|
|
FloppyCommandScanEqual = 17,
|
|
FloppyCommandPerpendicularMode = 18, // * used during initialization, once, maybe
|
|
FloppyCommandConfigure = 19, // * set controller parameters
|
|
FloppyCommandLock = 20, // * protect controller params from a reset
|
|
FloppyCommandVerify = 22,
|
|
FloppyCommandScanLowOrEqual = 25,
|
|
FloppyCommandScanHighOrEqual = 29,
|
|
|
|
FloppyModeMultitrack = 0x80,
|
|
FloppyModeMagneticEncoding = 0x40, // always set for read/write/verify/format
|
|
FloppyModeSkip = 0x20
|
|
};
|
|
|
|
enum FloppyMSRMasks
|
|
{
|
|
FloppyMsrRQM = 0x80,
|
|
FloppyMsrDIO = 0x40,
|
|
FloppyMsrNDMA = 0x20,
|
|
FloppyMsrBusy = 0x10
|
|
};
|
|
|
|
typedef struct {
|
|
uint32 Size, SectorsPerTrack, Heads, Tracks;
|
|
uint8 Gap, DataRate, Spec1, SRT, HLT, HUT;
|
|
uint32 Spinup, Spindown, InterruptTimeout;
|
|
string Name;
|
|
} FloppyType;
|
|
|
|
extern void FloppyInitialize();
|
|
extern void FloppyIrqHandler(_RegsStack32 *r);
|
|
extern void FloppyWaitIrq();
|
|
extern void FloppyInitDma();
|
|
|
|
extern void FloppyReset();
|
|
extern void FloppyConfigure();
|
|
extern void FloppySendCommand (uint8 command);
|
|
extern uint8 FloppyReadData ();
|
|
extern void FloppySenseInterrupt(uint8 *st0, uint8 *cyl);
|
|
extern void FloppySpecify (uint8 fd);
|
|
extern void FloppyMotor (uint8 fd_number, uint8 status);
|
|
extern void FloppySelectDrive(uint8 number);
|
|
extern void FloppyRecalibrate(uint8 fd_number);
|
|
extern void FloppyRW(uint8 isWrite, uint8 fd_number, uint8 head, uint8 cylinder, uint8 sector);
|
|
extern uint32 FloppyRead(uint8 drive, uint32 lba);
|
|
|
|
#endif /* FLOPPY_H_ */
|