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magnum: use hd61830 lcdc emulation (nw)

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This commit is contained in:
cracyc 2018-03-15 17:32:02 -05:00
parent b6d5d656c7
commit bc0127332a
1 changed files with 36 additions and 99 deletions
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135
src/mame/drivers/magnum.cpp
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@ -8,6 +8,7 @@
#include "emu.h"
#include "cpu/i86/i186.h"
#include "machine/cdp1879.h"
#include "video/hd61830.h"
#include "sound/beep.h"
#include "rendlay.h"
#include "screen.h"
@ -18,112 +19,30 @@ class magnum_state : public driver_device
public:
magnum_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_palette(*this, "palette")
, m_cgrom(*this, "cgrom")
, m_beep(*this, "beep")
{
}
DECLARE_READ8_MEMBER(lcd_r);
DECLARE_WRITE8_MEMBER(lcd_w);
DECLARE_WRITE8_MEMBER(beep_w);
u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
void magnum(machine_config &config);
void magnum_io(address_map &map);
void magnum_map(address_map &map);
protected:
virtual void machine_reset() override;
virtual void machine_start() override;
private:
required_device<palette_device> m_palette;
required_memory_region m_cgrom;
DECLARE_WRITE8_MEMBER(beep_w);
void magnum_io(address_map &map);
void magnum_map(address_map &map);
void magnum_lcdc(address_map &map);
required_device<beep_device> m_beep;
struct lcd
{
u8 vram[640];
u8 cmd;
u16 cursor;
};
lcd m_lcd[2];
};
u32 magnum_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
u8* font = m_cgrom->base();
u32 black = m_palette->pen(0);
u32 white = m_palette->pen(1);
for(int scr = 0; scr < 2; scr++)
{
u8* vram = m_lcd[!scr].vram;
for(int i = 0; i < 16; i++)
{
for(int j = 0; j < 40; j++)
{
for(int k = 0; k < 9; k++)
{
for(int l = 0; l < 6; l++)
bitmap.pix32((i * 9) + k, ((j + (scr * 40)) * 6) + l) = font[(vram[(i * 40) + j] * 16) + k] & (1 << (5 - l)) ? black : white;
}
}
}
}
return 0;
}
void magnum_state::machine_start()
{
save_item(NAME(m_lcd[0].vram));
save_item(NAME(m_lcd[0].cmd));
save_item(NAME(m_lcd[0].cursor));
save_item(NAME(m_lcd[1].vram));
save_item(NAME(m_lcd[1].cmd));
save_item(NAME(m_lcd[1].cursor));
}
void magnum_state::machine_reset()
{
memset(m_lcd, 0, sizeof(m_lcd));
}
READ8_MEMBER(magnum_state::lcd_r)
{
//lcd& panel = m_lcd[BIT(offset, 1)];
switch(BIT(offset, 0))
{
case 1:
return 0; // bit 8 busy status
}
return 0;
}
WRITE8_MEMBER(magnum_state::lcd_w)
{
lcd& panel = m_lcd[BIT(offset, 1)];
switch(BIT(offset, 0))
{
case 0:
switch(panel.cmd)
{
case 0xa:
panel.cursor = ((panel.cursor & 0xff00) | data) % 640;
break;
case 0xb:
panel.cursor = ((panel.cursor & 0x00ff) | (data << 8)) % 640;
break;
case 0xc:
panel.vram[panel.cursor] = data;
panel.cursor++;
panel.cursor %= 640;
break;
}
break;
case 1:
panel.cmd = data;
break;
}
}
WRITE8_MEMBER(magnum_state::beep_w)
@ -143,11 +62,19 @@ void magnum_state::magnum_io(address_map &map)
map.unmap_value_high();
//AM_RANGE(0x000a, 0x000b) cdp1854 1
//AM_RANGE(0x000e, 0x000f) cpd1854 2
map(0x0018, 0x001f).rw(this, FUNC(magnum_state::lcd_r), FUNC(magnum_state::lcd_w)).umask16(0x00ff);
map(0x0018, 0x0019).rw("lcdc2", FUNC(hd61830_device::data_r), FUNC(hd61830_device::data_w)).umask16(0x00ff);
map(0x001a, 0x001b).rw("lcdc2", FUNC(hd61830_device::status_r), FUNC(hd61830_device::control_w)).umask16(0x00ff);
map(0x001c, 0x001d).rw("lcdc1", FUNC(hd61830_device::data_r), FUNC(hd61830_device::data_w)).umask16(0x00ff);
map(0x001e, 0x001f).rw("lcdc1", FUNC(hd61830_device::status_r), FUNC(hd61830_device::control_w)).umask16(0x00ff);
map(0x0056, 0x0056).w(this, FUNC(magnum_state::beep_w));
map(0x0080, 0x008f).rw("rtc", FUNC(cdp1879_device::read), FUNC(cdp1879_device::write)).umask16(0x00ff);
}
void magnum_state::magnum_lcdc(address_map &map)
{
map(0x0000, 0x027f).ram();
}
MACHINE_CONFIG_START(magnum_state::magnum)
MCFG_CPU_ADD("maincpu", I80186, XTAL(12'000'000) / 2)
MCFG_CPU_PROGRAM_MAP(magnum_map)
@ -155,16 +82,29 @@ MACHINE_CONFIG_START(magnum_state::magnum)
MCFG_DEVICE_ADD("rtc", CDP1879, XTAL(32'768))
MCFG_SCREEN_ADD("screen", LCD)
MCFG_SCREEN_UPDATE_DRIVER(magnum_state, screen_update)
MCFG_SCREEN_ADD("screen1", LCD)
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_SIZE(6*80, 9*16)
MCFG_SCREEN_VISIBLE_AREA(0, 6*80-1, 0, 9*16-1)
MCFG_SCREEN_UPDATE_DEVICE("lcdc1", hd61830_device, screen_update)
MCFG_SCREEN_SIZE(6*40, 9*16)
MCFG_SCREEN_VISIBLE_AREA(0, 6*40-1, 0, 9*16-1)
MCFG_SCREEN_PALETTE("palette")
MCFG_DEFAULT_LAYOUT(layout_lcd)
MCFG_SCREEN_ADD("screen2", LCD)
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_UPDATE_DEVICE("lcdc2", hd61830_device, screen_update)
MCFG_SCREEN_SIZE(6*40, 9*16)
MCFG_SCREEN_VISIBLE_AREA(0, 6*40-1, 0, 9*16-1)
MCFG_SCREEN_PALETTE("palette")
MCFG_PALETTE_ADD_MONOCHROME("palette")
MCFG_DEVICE_ADD("lcdc1", HD61830, 1000000) // unknown clock
MCFG_DEVICE_ADDRESS_MAP(0, magnum_lcdc)
MCFG_VIDEO_SET_SCREEN("screen1")
MCFG_DEVICE_ADD("lcdc2", HD61830, 1000000) // unknown clock
MCFG_DEVICE_ADDRESS_MAP(0, magnum_lcdc)
MCFG_VIDEO_SET_SCREEN("screen2")
MCFG_PALETTE_ADD_MONOCHROME_INVERTED("palette")
MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("beep", BEEP, 500) /// frequency is guessed
@ -184,9 +124,6 @@ ROM_START( magnum )
ROM_REGION(0x1000, "char", 0)
ROM_LOAD("dulmontcharrom.bin", 0x0000, 0x1000, CRC(9dff89bf) SHA1(d359aeba7f0b0c81accf3bca25e7da636c033721))
ROM_REGION(0x1000, "cgrom", 0) // borrow this rom for the lcd screen as it looks the same, the above is for the crt output
ROM_LOAD("hd44780_a00.bin", 0x0000, 0x1000, BAD_DUMP CRC(01d108e2) SHA1(bc0cdf0c9ba895f22e183c7bd35a3f655f2ca96f))
ROM_END
COMP( 1983, magnum, 0, 0, magnum, 0, magnum_state, 0, "Dulmont", "Magnum", MACHINE_NOT_WORKING | MACHINE_IMPERFECT_SOUND)