/home/blindaue/rpm/BUILD/sc68-2.2.1/io68/mfpemul.h File Reference

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Detailed Description

Author:

Benjamin Gerard <ben@sashipa.com> MFP-68901 emulator.

Date:

1999/03/20

Id

mfpemul.h,v 2.0 2003/08/21 04:58:35 benjihan Exp

#include "emu68/struct68.h"

Go to the source code of this file.

Defines
#define	TIMER_A   0
	MFP timer 'A'.
#define	TIMER_B   1
	MFP timer 'B'.
#define	TIMER_C   2
	MFP timer 'C'.
#define	TIMER_D   3
	MFP timer 'D'.
Functions
int	MFP_reset (void)
	MFP reset.
int	MFP_init (void)
	MFP init.
u8	MFP_getTDR (int timer, cycle68_t cycle)
	MFP get Timer Data register.
void	MFP_putTDR (int timer, u8 v, cycle68_t cycle)
	MFP write Timer data register.
void	MFP_putTCR (int timer, u8 v, cycle68_t cycle)
	MFP write Timer control register.
int68_t *	MFP_interrupt (cycle68_t cycle)
	Get MFP pending interruption.
cycle68_t	MFP_nextinterrupt (cycle68_t cycle)
	Get cycle for the next MFP interruption.
void	MFP_subcycle (cycle68_t subcycle)
	Change cycle count base.
Variables
u8	mfp [0x40]
	MFP shadow register array.

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Function Documentation

u8 MFP_getTDR	(	int	timer,
		cycle68_t	cycle
	)

MFP get Timer Data register.

Parameters:

	timer	Timer-id (0:A 1:B 2:C 3:D).
	cycle	Current cycle.

Returns:

timer data register (TDR) value

void MFP_putTDR	(	int	timer,
		u8	v,
		cycle68_t	cycle
	)

MFP write Timer data register.

Parameters:

	timer	Timer-id (0:A 1:B 2:C 3:D).
	v	New timer data register (TDR) value.
	cycle	current cycle.

void MFP_putTCR	(	int	timer,
		u8	v,
		cycle68_t	cycle
	)

MFP write Timer control register.

Parameters:

	timer	Timer-id (0:A 1:B 2:C 3:D).
	v	New timer control register (TCR) value.
	cycle	current cycle.

int68_t* MFP_interrupt

(

cycle68_t

cycle

)

Get MFP pending interruption.

Parameters:

cycle

Current cycle.

Returns:

interruption info structure.

Return values:

0

no pending interruption.

cycle68_t MFP_nextinterrupt

(

cycle68_t

cycle

)

Get cycle for the next MFP interruption.

Parameters:

cycle

Current cycle.

Returns:

cycle when MFP will interrupt

Return values:

IO68_NO_INT

no interrupt will occur.

void MFP_subcycle

(

cycle68_t

subcycle

)

Change cycle count base.

Parameters:

subcycle

New base for internal cycle counter.

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Variable Documentation

u8 mfp[0x40]

MFP shadow register array.

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