// license:MAME
// copyright-holders:Robbbert
/***************************************************************************
CCS Model 300
2009-12-11 Skeleton driver.
It requires a floppy disk to boot from.
There's no info available on this system, however the bankswitching
appears to be the same as their other systems.
Early on, it does a read from port F2. If bit 3 is low, the system becomes
a Model 400.
Since IM2 is used, it is assumed there are Z80 peripherals on board.
There's unknown usage of ports 11 thru 1B, 34, and F0 thru F2.
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/terminal.h"
#define TERMINAL_TAG "terminal"
class ccs300_state : public driver_device
{
public:
ccs300_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_terminal(*this, TERMINAL_TAG)
{
}
DECLARE_DRIVER_INIT(ccs300);
DECLARE_MACHINE_RESET(ccs300);
DECLARE_READ8_MEMBER(port10_r);
DECLARE_READ8_MEMBER(port11_r);
DECLARE_WRITE8_MEMBER(port10_w);
DECLARE_WRITE8_MEMBER(port40_w);
DECLARE_WRITE8_MEMBER(kbd_put);
private:
UINT8 m_term_data;
required_device<cpu_device> m_maincpu;
required_device<generic_terminal_device> m_terminal;
};
static ADDRESS_MAP_START(ccs300_mem, AS_PROGRAM, 8, ccs300_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x07ff) AM_READ_BANK("bankr0") AM_WRITE_BANK("bankw0")
AM_RANGE(0x0800, 0xffff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START( ccs300_io, AS_IO, 8, ccs300_state)
ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x10, 0x10) AM_READWRITE(port10_r,port10_w)
AM_RANGE(0x11, 0x11) AM_READ(port11_r)
AM_RANGE(0x40, 0x40) AM_WRITE(port40_w)
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( ccs300 )
INPUT_PORTS_END
//*************************************
//
// Keyboard
//
//*************************************
READ8_MEMBER( ccs300_state::port10_r )
{
UINT8 ret = m_term_data;
m_term_data = 0;
return ret;
}
READ8_MEMBER( ccs300_state::port11_r )
{
return (m_term_data) ? 5 : 4;
}
WRITE8_MEMBER( ccs300_state::port10_w )
{
m_terminal->write(space, 0, data & 0x7f);
}
WRITE8_MEMBER( ccs300_state::kbd_put )
{
m_term_data = data;
}
//*************************************
//
// Machine
//
//*************************************
WRITE8_MEMBER( ccs300_state::port40_w )
{
membank("bankr0")->set_entry( (data) ? 1 : 0);
}
MACHINE_RESET_MEMBER( ccs300_state, ccs300 )
{
membank("bankr0")->set_entry(0); // point at rom
membank("bankw0")->set_entry(0); // always write to ram
}
DRIVER_INIT_MEMBER( ccs300_state, ccs300 )
{
UINT8 *main = memregion("maincpu")->base();
membank("bankr0")->configure_entry(1, &main[0x0000]);
membank("bankr0")->configure_entry(0, &main[0x10000]);
membank("bankw0")->configure_entry(0, &main[0x0000]);
}
static MACHINE_CONFIG_START( ccs300, ccs300_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz)
MCFG_CPU_PROGRAM_MAP(ccs300_mem)
MCFG_CPU_IO_MAP(ccs300_io)
MCFG_MACHINE_RESET_OVERRIDE(ccs300_state, ccs300)
/* video hardware */
MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0)
MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(ccs300_state, kbd_put))
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( ccs300 )
ROM_REGION( 0x10800, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "ccs300.rom", 0x10000, 0x0800, CRC(6cf22e31) SHA1(9aa3327cd8c23d0eab82cb6519891aff13ebe1d0))
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
COMP( 19??, ccs300, ccs2810, 0, ccs300, ccs300, ccs300_state, ccs300, "California Computer Systems", "CCS Model 300", GAME_IS_SKELETON )