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dpsv55: Add LCD screen

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This commit is contained in:
AJR 2021-07-26 21:23:25 -04:00
parent 1b1bfc36a4
commit 46bcee8430
1 changed files with 57 additions and 1 deletions
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58
src/mame/drivers/dpsv55.cpp
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@ -12,6 +12,9 @@
#include "emu.h"
#include "cpu/f2mc16/mb9061x.h"
#include "machine/nvram.h"
#include "video/hd44780.h"
#include "emupal.h"
#include "screen.h"
namespace {
@ -21,20 +24,60 @@ public:
dpsv55_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_lcdc(*this, "lcdc")
, m_p5(0)
{
}
void dpsv55(machine_config &config);
protected:
virtual void machine_start() override;
private:
HD44780_PIXEL_UPDATE(pixel_update);
u8 p5_r();
void p5_w(u8 data);
void mem_map(address_map &map);
required_device<cpu_device> m_maincpu;
required_device<hd44780_device> m_lcdc;
u8 m_p5;
};
void dpsv55_state::machine_start()
{
save_item(NAME(m_p5));
}
HD44780_PIXEL_UPDATE(dpsv55_state::pixel_update)
{
if (x < 5 && y < 8 && line < 2 && pos >= 4 && pos < 20)
bitmap.pix(line * 8 + y, (pos - 4) * 6 + x) = state;
}
u8 dpsv55_state::p5_r()
{
return m_p5;
}
void dpsv55_state::p5_w(u8 data)
{
m_lcdc->e_w(BIT(data, 3));
m_lcdc->rw_w(BIT(data, 2));
m_lcdc->rs_w(BIT(data, 1));
m_p5 = data;
}
void dpsv55_state::mem_map(address_map &map)
{
map(0x000001, 0x000001).rw(m_lcdc, FUNC(hd44780_device::db_r), FUNC(hd44780_device::db_w));
map(0x000005, 0x000005).rw(FUNC(dpsv55_state::p5_r), FUNC(dpsv55_state::p5_w));
map(0x000023, 0x000023).nopr();
map(0xfc0000, 0xfc7fff).mirror(0x18000).ram().share("nvram"); // CS1
map(0xfe0000, 0xffffff).rom().region("eprom", 0); // CS0
}
@ -50,7 +93,20 @@ void dpsv55_state::dpsv55(machine_config &config)
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // CY62256LL-70SNC-T2 + 3V lithium battery + M62021FP-600C reset generator + M5239L voltage detector
// TODO: LCD unit (LC0801)
// LCD unit (LC0801)
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD));
screen.set_refresh_hz(60);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
screen.set_screen_update("lcdc", FUNC(hd44780_device::screen_update));
screen.set_size(6*16, 8*2);
screen.set_visarea_full();
screen.set_palette("palette");
PALETTE(config, "palette", palette_device::MONOCHROME_INVERTED);
HD44780(config, m_lcdc, 0);
m_lcdc->set_lcd_size(2, 20);
m_lcdc->set_pixel_update_cb(FUNC(dpsv55_state::pixel_update));
//CXD2707(config, "dsp", 49.152_MHz_XTAL);
}