// license:BSD-3-Clause
// copyright-holders:rfka01
// adapted from pimps.cpp by Robbbert
/***************************************************************************

Mikrocomputer fuer Ausbildung
Berufsfoerdungszentrum Essen


****************************************************************************/

#include "emu.h"
#include "cpu/i8085/i8085.h"
#include "machine/terminal.h"

#define TERMINAL_TAG "terminal"

class mfabfz_state : public driver_device
{
public:
	mfabfz_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
		m_terminal(*this, TERMINAL_TAG),
		m_maincpu(*this, "maincpu")
	{
	}

	DECLARE_READ8_MEMBER(term_status_r);
	DECLARE_READ8_MEMBER(term_r);
	DECLARE_WRITE8_MEMBER(kbd_put);
	
	DECLARE_WRITE_LINE_MEMBER(sod_w);
	DECLARE_READ_LINE_MEMBER(sid_r);
	uint8_t m_term_data;
	virtual void machine_reset() override;

	required_device<generic_terminal_device> m_terminal;
	required_device<cpu_device> m_maincpu;
};


// should be 8251 UART

WRITE_LINE_MEMBER( mfabfz_state::sod_w )
{
	m_term_data = state;
}

READ_LINE_MEMBER( mfabfz_state::sid_r )
{	
	uint8_t ret = m_term_data;
	m_term_data = 0;
	return ret;
}


READ8_MEMBER( mfabfz_state::term_status_r )
{
	return (m_term_data) ? 3 : 1;
}

READ8_MEMBER( mfabfz_state::term_r )
{
	uint8_t ret = m_term_data;
	m_term_data = 0;
	return ret;
}

static ADDRESS_MAP_START(mfabfz_mem, AS_PROGRAM, 8, mfabfz_state)
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x0000, 0x7fff) AM_ROM
	AM_RANGE(0x8000, 0xffff) AM_RAM
ADDRESS_MAP_END

static ADDRESS_MAP_START(mfabfz_io, AS_IO, 8, mfabfz_state)
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0xbe, 0xbe) AM_READ(term_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write)
	AM_RANGE(0xb1, 0xbf) AM_READ(term_status_r)
ADDRESS_MAP_END

/* Input ports */
static INPUT_PORTS_START( mfabfz )
INPUT_PORTS_END


void mfabfz_state::machine_reset()
{
	m_term_data = 0;
}

WRITE8_MEMBER( mfabfz_state::kbd_put )
{
	m_term_data = data;
}

static MACHINE_CONFIG_START( mfabfz, mfabfz_state )
	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu",I8085A, XTAL_2MHz)
	MCFG_CPU_PROGRAM_MAP(mfabfz_mem)
	MCFG_CPU_IO_MAP(mfabfz_io)
	MCFG_I8085A_SID(READLINE(mfabfz_state, sid_r))
	MCFG_I8085A_SOD(WRITELINE(mfabfz_state, sod_w))
	/* video hardware */
	MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0)
	MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(mfabfz_state, kbd_put))
	

MACHINE_CONFIG_END

/* ROM definition */

ROM_START( mfabfz )
	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
	ROM_LOAD( "mfa_mat32k_vers.1.8-t_ic0.bin", 0x0000, 0x8000, CRC(6cba989e) SHA1(81611b6250a5319e5d28af5ce3a1e261af8315ae))
ROM_END

/*
ROM_START( mfabfz )
	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
	ROM_LOAD( "mfa_mat32k_vers.1.8-s_ic0.bin", 0x0000, 0x8000, CRC(021d7dff) SHA1(aa34b3a8bac52fc7746d35f5ffc6328734788cc2))
ROM_END
*/
/* Driver */

/*    YEAR  NAME    PARENT  COMPAT   MACHINE    INPUT    INIT   COMPANY   FULLNAME       FLAGS */
COMP( 198?, mfabfz,  0,      0,       mfabfz,     mfabfz, driver_device,   0, "Berufsfoerdungszentrum Essen", "Mikrocomputer fuer Ausbildung", MACHINE_NOT_WORKING)