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cit220p: Add SCN2674 device (nw)

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This commit is contained in:
AJR 2017-11-21 22:19:29 -05:00
parent 0a2a4e849f
commit 4cb6ff1e4c
1 changed files with 29 additions and 2 deletions
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31
src/mame/drivers/cit220.cpp
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@ -11,6 +11,8 @@ enough to provoke a lawsuit, which led to its eventual withdrawal in favor of it
#include "emu.h"
#include "cpu/i8085/i8085.h"
#include "video/scn2674.h"
#include "screen.h"
class cit220_state : public driver_device
@ -19,13 +21,16 @@ public:
cit220_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_screen(*this, "screen")
//, m_p_chargen(*this, "chargen")
{ }
DECLARE_WRITE_LINE_MEMBER(sod_w);
SCN2674_DRAW_CHARACTER_MEMBER(draw_character);
private:
required_device<cpu_device> m_maincpu;
required_device<screen_device> m_screen;
//required_region_ptr<u8> m_p_chargen;
};
@ -42,7 +47,15 @@ static ADDRESS_MAP_START( mem_map, AS_PROGRAM, 8, cit220_state )
ADDRESS_MAP_END
static ADDRESS_MAP_START( io_map, AS_IO, 8, cit220_state )
AM_RANGE(0x21, 0x21) AM_READNOP
AM_RANGE(0x20, 0x27) AM_DEVREADWRITE("avdc", scn2674_device, read, write)
ADDRESS_MAP_END
SCN2674_DRAW_CHARACTER_MEMBER(cit220_state::draw_character)
{
}
static ADDRESS_MAP_START( vram_map, 0, 8, cit220_state )
ADDRESS_MAP_END
@ -51,10 +64,24 @@ INPUT_PORTS_END
static MACHINE_CONFIG_START( cit220p )
MCFG_CPU_ADD("maincpu", I8085A, 6'000'000)
MCFG_CPU_ADD("maincpu", I8085A, 6000000)
MCFG_CPU_PROGRAM_MAP(mem_map)
MCFG_CPU_IO_MAP(io_map)
MCFG_I8085A_SOD(WRITELINE(cit220_state, sod_w))
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_SIZE(720, 360)
MCFG_SCREEN_VISIBLE_AREA(0, 720-1, 0, 360-1)
MCFG_SCREEN_UPDATE_DEVICE("avdc", scn2674_device, screen_update)
MCFG_SCN2674_VIDEO_ADD("avdc", 4000000, INPUTLINE("maincpu", I8085_RST65_LINE))
MCFG_SCN2674_TEXT_CHARACTER_WIDTH(8)
MCFG_SCN2674_GFX_CHARACTER_WIDTH(8)
MCFG_SCN2674_DRAW_CHARACTER_CALLBACK_OWNER(cit220_state, draw_character)
MCFG_DEVICE_ADDRESS_MAP(0, vram_map)
MCFG_VIDEO_SET_SCREEN("screen")
MACHINE_CONFIG_END