Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-23 08:49:55 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

tv912.cpp: Start work on memory map (nw)

Browse Source
This commit is contained in:
AJR 2018-01-17 09:32:42 -05:00
parent 91ea7b5174
commit 9f383f76ce
1 changed files with 44 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
src/mame/drivers/tv912.cpp
View File

@ -16,6 +16,7 @@
#include "cpu/mcs48/mcs48.h"
//#include "bus/rs232/rs232.h"
//#include "machine/ay31015.h"
#include "machine/bankdev.h"
//#include "video/tms9927.h"
#include "screen.h"
@ -27,26 +28,62 @@ public:
tv912_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_bankdev(*this, "bankdev")
, m_dispram_bank(*this, "dispram")
, m_p_chargen(*this, "chargen")
{ }
DECLARE_WRITE8_MEMBER(p2_w);
u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
private:
virtual void machine_start() override;
virtual void machine_reset() override;
required_device<cpu_device> m_maincpu;
required_device<address_map_bank_device> m_bankdev;
required_memory_bank m_dispram_bank;
required_region_ptr<u8> m_p_chargen;
std::unique_ptr<u8[]> m_dispram;
};
WRITE8_MEMBER(tv912_state::p2_w)
{
m_bankdev->set_bank(data & 0x0f);
}
u32 tv912_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
return 0;
}
void tv912_state::machine_start()
{
m_dispram = make_unique_clear<u8[]>(0x1000);
m_dispram_bank->configure_entries(0, 2, m_dispram.get(), 0x800);
save_pointer(NAME(m_dispram.get()), 0x1000);
}
void tv912_state::machine_reset()
{
m_dispram_bank->set_entry(0);
}
static ADDRESS_MAP_START( prog_map, AS_PROGRAM, 8, tv912_state )
AM_RANGE(0x000, 0xfff) AM_ROM AM_REGION("maincpu", 0)
ADDRESS_MAP_END
static ADDRESS_MAP_START( io_map, AS_IO, 8, tv912_state )
AM_RANGE(0x00, 0xff) AM_DEVICE("bankdev", address_map_bank_device, amap8)
ADDRESS_MAP_END
static ADDRESS_MAP_START( bank_map, 0, 8, tv912_state )
AM_RANGE(0x000, 0x0ff) AM_MIRROR(0x300) AM_RAM
//AM_RANGE(0x400, 0x403) AM_MIRROR(0x3c0) AM_SELECT(0x030) AM_READWRITE(crtc_r, crtc_w)
AM_RANGE(0x800, 0xfff) AM_RAMBANK("dispram")
ADDRESS_MAP_END
static INPUT_PORTS_START( tv912b )
@ -59,6 +96,13 @@ static MACHINE_CONFIG_START( tv912 )
MCFG_CPU_ADD("maincpu", I8035, XTAL_23_814MHz / 4)
MCFG_CPU_PROGRAM_MAP(prog_map)
MCFG_CPU_IO_MAP(io_map)
MCFG_MCS48_PORT_P2_OUT_CB(WRITE8(tv912_state, p2_w))
MCFG_DEVICE_ADD("bankdev", ADDRESS_MAP_BANK, 0)
MCFG_DEVICE_PROGRAM_MAP(bank_map)
MCFG_ADDRESS_MAP_BANK_DATA_WIDTH(8)
MCFG_ADDRESS_MAP_BANK_ADDR_WIDTH(12)
MCFG_ADDRESS_MAP_BANK_STRIDE(0x100)
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_RAW_PARAMS(XTAL_23_814MHz, 105 * CHAR_WIDTH, 0, 80 * CHAR_WIDTH, 270, 0, 240)