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(MESS) codata : added a terminal, system responds to commands. [Robbbert]

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Robbbert 2013-08-26 12:22:26 +00:00
parent d39c370c7e
commit a6d78334e9
1 changed files with 49 additions and 32 deletions
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81
src/mess/drivers/codata.c
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@ -2,38 +2,51 @@
Contel Codata Corporation Codata
11/01/2010 Skeleton driver.
2010-01-11 Skeleton driver.
2013-08-26 Connected to a terminal.
Chips: uPD7201C, AM9513, SCN68000. Crystal: 16 MHz
****************************************************************************/
#include "emu.h"
#include "cpu/m68000/m68000.h"
#include "machine/terminal.h"
class codata_state : public driver_device
{
public:
codata_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_p_base(*this, "p_base"),
m_maincpu(*this, "maincpu") { }
: driver_device(mconfig, type, tag)
, m_p_base(*this, "rambase")
, m_terminal(*this, TERMINAL_TAG)
, m_maincpu(*this, "maincpu")
{ }
required_shared_ptr<UINT16> m_p_base;
DECLARE_READ16_MEMBER(keyin_r);
DECLARE_READ16_MEMBER(status_r);
DECLARE_WRITE8_MEMBER(kbd_put);
private:
UINT8 m_term_data;
virtual void machine_reset();
virtual void video_start();
UINT32 screen_update_codata(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
required_shared_ptr<UINT16> m_p_base;
required_device<generic_terminal_device> m_terminal;
required_device<cpu_device> m_maincpu;
};
static ADDRESS_MAP_START(codata_mem, AS_PROGRAM, 16, codata_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x000000, 0x0fffff) AM_RAM AM_SHARE("p_base")
AM_RANGE(0x000000, 0x0fffff) AM_RAM AM_SHARE("rambase")
AM_RANGE(0x200000, 0x203fff) AM_ROM AM_REGION("user1", 0);
AM_RANGE(0x400000, 0x403fff) AM_ROM AM_REGION("user1", 0x4000);
//AM_RANGE(0x600000, 0x600003) some device
//AM_RANGE(0x800000, 0x800003) another device
AM_RANGE(0x600000, 0x600001) AM_READ(keyin_r) AM_DEVWRITE8(TERMINAL_TAG, generic_terminal_device, write, 0xff00)
AM_RANGE(0x600002, 0x600003) AM_READ(status_r)
//AM_RANGE(0x600000, 0x600003) uPD7201 SIO
//AM_RANGE(0x800000, 0x800003) AM9513 5 channel timer
//AM_RANGE(0xa00000, 0xbfffff) page map (rw)
//AM_RANGE(0xc00000, 0xdfffff) segment map (rw), context register (r)
//AM_RANGE(0xe00000, 0xffffff) context register (w), 16-bit parallel input port (r)
ADDRESS_MAP_END
/* Input ports */
@ -41,39 +54,43 @@ static INPUT_PORTS_START( codata )
INPUT_PORTS_END
READ16_MEMBER( codata_state::keyin_r )
{
UINT16 ret = m_term_data;
m_term_data = 0;
return ret << 8;
}
READ16_MEMBER( codata_state::status_r )
{
return (m_term_data) ? 0x500 : 0x400;
}
WRITE8_MEMBER( codata_state::kbd_put )
{
m_term_data = data;
}
static GENERIC_TERMINAL_INTERFACE( terminal_intf )
{
DEVCB_DRIVER_MEMBER(codata_state, kbd_put)
};
void codata_state::machine_reset()
{
UINT8* RAM = memregion("user1")->base();
memcpy(m_p_base, RAM, 16);
m_term_data = 0;
m_maincpu->reset();
}
void codata_state::video_start()
{
}
UINT32 codata_state::screen_update_codata(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
return 0;
}
static MACHINE_CONFIG_START( codata, codata_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",M68000, XTAL_16MHz / 2)
MCFG_CPU_PROGRAM_MAP(codata_mem)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_SIZE(640, 480)
MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1)
MCFG_SCREEN_UPDATE_DRIVER(codata_state, screen_update_codata)
MCFG_PALETTE_LENGTH(2)
MCFG_PALETTE_INIT_OVERRIDE(driver_device, black_and_white)
MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf)
MACHINE_CONFIG_END
/* ROM definition */