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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
COMX-35 F&M EPROM Card emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************/
#include "eprom.h"
//**************************************************************************
// MACROS/CONSTANTS
//**************************************************************************
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
const device_type COMX_EPR = &device_creator<comx_epr_device>;
//-------------------------------------------------
// ROM( comx_epr )
//-------------------------------------------------
ROM_START( comx_epr )
ROM_REGION( 0x800, "f800", 0 )
ROM_LOAD( "f&m.eprom.board.1.1.bin", 0x0000, 0x0800, CRC(a042a31a) SHA1(13831a1350aa62a87988bfcc99c4b7db8ef1cf62) )
ROM_REGION( 0x10000, "eprom", 0 )
ROM_LOAD( "f&m.basic.bin", 0x0000, 0x2000, CRC(22ab7b61) SHA1(68b5770bca37b1ba94083f944086884e612b5a1b) )
ROM_LOAD( "disk.utilities.bin", 0x2000, 0x2000, CRC(2576c945) SHA1(e80481054c6997a5f418d8a5872ac0110ae7b75a) )
ROM_LOAD( "tennismania.bin", 0x4000, 0x2000, CRC(a956cc74) SHA1(8bc914f52f0dd2cf792da74ec4e9e333365619ef) )
ROM_END
//-------------------------------------------------
// rom_region - device-specific ROM region
//-------------------------------------------------
const rom_entry *comx_epr_device::device_rom_region() const
{
return ROM_NAME( comx_epr );
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// comx_epr_device - constructor
//-------------------------------------------------
comx_epr_device::comx_epr_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
device_t(mconfig, COMX_EPR, "COMX-35 F&M EPROM Switchboard", tag, owner, clock, "comx_epr", __FILE__),
device_comx_expansion_card_interface(mconfig, *this),
m_rom(*this, "f800"),
m_eprom(*this, "eprom"),
m_select(0)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void comx_epr_device::device_start()
{
// state saving
save_item(NAME(m_select));
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void comx_epr_device::device_reset()
{
}
//-------------------------------------------------
// comx_mrd_r - memory read
//-------------------------------------------------
UINT8 comx_epr_device::comx_mrd_r(address_space &space, offs_t offset, int *extrom)
{
UINT8 data = 0;
if (offset >= 0xc000 && offset < 0xe000)
{
offs_t address = (m_select << 13) | (offset & 0x1fff);
data = m_eprom->base()[address];
}
else if (offset >= 0xf800)
{
data = m_rom->base()[offset & 0x7ff];
}
return data;
}
//-------------------------------------------------
// comx_io_w - I/O write
//-------------------------------------------------
void comx_epr_device::comx_io_w(address_space &space, offs_t offset, UINT8 data)
{
if (offset == 1)
{
m_select = data >> 5;
}
}
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