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(MESS) clcd.c added support for bitmap mode [smf]

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smf- 2014-01-24 12:27:19 +00:00
parent 92fd14a096
commit dcd57f0f8b
1 changed files with 93 additions and 34 deletions
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127
src/mess/drivers/clcd.c
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@ -30,6 +30,10 @@ public:
m_bank2(*this, "bank2"),
m_bank3(*this, "bank3"),
m_bank4(*this, "bank4"),
m_lcd_scrollx(0),
m_lcd_scrolly(0),
m_lcd_mode(0),
m_lcd_size(0),
m_mmu_mode(MMU_MODE_KERN),
m_mmu_saved_mode(MMU_MODE_KERN),
m_mmu_offset1(0),
@ -53,18 +57,15 @@ public:
{
}
TILE_GET_INFO_MEMBER(get_clcd_tilemap_tile_info)
{
int code = m_ram->pointer()[((tile_index / 80) * 128) + (tile_index % 80) + 0x800];
SET_TILE_INFO_MEMBER(0, code & 0x7f, ( code & 0x80 ) >> 7, 0);
}
virtual void driver_start()
{
m_mmu_mode = MMU_MODE_TEST;
update_mmu_mode(MMU_MODE_KERN);
save_item(NAME(m_lcd_scrollx));
save_item(NAME(m_lcd_scrolly));
save_item(NAME(m_lcd_mode));
save_item(NAME(m_lcd_size));
save_item(NAME(m_mmu_mode));
save_item(NAME(m_mmu_saved_mode));
save_item(NAME(m_mmu_offset1));
@ -78,15 +79,58 @@ public:
save_item(NAME(m_key_shift));
}
virtual void video_start()
{
m_tilemap = &machine().tilemap().create(tilemap_get_info_delegate(FUNC(clcd_state::get_clcd_tilemap_tile_info),this), TILEMAP_SCAN_ROWS, 6, 8, 80, 16);
}
UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
m_tilemap->mark_all_dirty();
m_tilemap->draw(screen, bitmap, cliprect, 0, 0);
if (m_lcd_mode & LCD_MODE_GRAPH)
{
for (int y=0; y<128; y++)
{
int offset = (m_lcd_scrolly * 128) + m_lcd_scrollx + (y*64);
for (int x = 0; x < 60; x++)
{
UINT8 bit = m_ram->pointer()[offset++];
bitmap.pix16(y, (x*8)+0) = (bit>>7) & 1;
bitmap.pix16(y, (x*8)+1) = (bit>>6) & 1;
bitmap.pix16(y, (x*8)+2) = (bit>>5) & 1;
bitmap.pix16(y, (x*8)+3) = (bit>>4) & 1;
bitmap.pix16(y, (x*8)+4) = (bit>>3) & 1;
bitmap.pix16(y, (x*8)+5) = (bit>>2) & 1;
bitmap.pix16(y, (x*8)+6) = (bit>>1) & 1;
bitmap.pix16(y, (x*8)+7) = (bit>>0) & 1;
}
}
}
else
{
UINT8 *chargen = memregion("maincpu")->base() + 0x1f700;
int chrw = (m_lcd_size & LCD_SIZE_CHRW) ? 8 : 6;
for (int y=0; y<16; y++)
{
int offset = (m_lcd_scrolly * 128) + m_lcd_scrollx + (y * 128);
for (int x=0; x<480; x++)
{
UINT8 ch = m_ram->pointer()[offset + (x / chrw)];
UINT8 bit = chargen[((ch & 127) * chrw) + (x % chrw)];
if (ch & 128)
{
bit = ~bit;
}
bitmap.pix16(y*8+0, x) = (bit>>0) & 1;
bitmap.pix16(y*8+1, x) = (bit>>1) & 1;
bitmap.pix16(y*8+2, x) = (bit>>2) & 1;
bitmap.pix16(y*8+3, x) = (bit>>3) & 1;
bitmap.pix16(y*8+4, x) = (bit>>4) & 1;
bitmap.pix16(y*8+5, x) = (bit>>5) & 1;
bitmap.pix16(y*8+6, x) = (bit>>6) & 1;
bitmap.pix16(y*8+7, x) = (bit>>7) & 1;
}
}
}
return 0;
}
@ -116,6 +160,16 @@ public:
MMU_MODE_TEST
};
enum
{
LCD_MODE_GRAPH = 2,
};
enum
{
LCD_SIZE_CHRW = 4,
};
void update_mmu_mode(int new_mode)
{
if (m_mmu_mode != new_mode)
@ -295,9 +349,24 @@ public:
return m_mmu_offset5;
}
WRITE8_MEMBER( lcd_w )
WRITE8_MEMBER( lcd_scrollx_w )
{
/// TODO: support bitmap and different font sizes
m_lcd_scrollx = data;
}
WRITE8_MEMBER( lcd_scrolly_w )
{
m_lcd_scrolly = data;
}
WRITE8_MEMBER( lcd_mode_w )
{
m_lcd_mode = data;
}
WRITE8_MEMBER( lcd_size_w )
{
m_lcd_size = data;
}
WRITE8_MEMBER( via0_pa_w )
@ -391,8 +460,11 @@ private:
required_device<address_map_bank_device> m_bank2;
required_device<address_map_bank_device> m_bank3;
required_device<address_map_bank_device> m_bank4;
tilemap_t *m_tilemap;
virtual void palette_init();
int m_lcd_scrollx;
int m_lcd_scrolly;
int m_lcd_mode;
int m_lcd_size;
int m_mmu_mode;
int m_mmu_saved_mode;
UINT8 m_mmu_offset1;
@ -472,7 +544,10 @@ static ADDRESS_MAP_START( clcd_mem, AS_PROGRAM, 8, clcd_state )
AM_RANGE(0xfe00, 0xfe00) AM_MIRROR(0x7f) AM_WRITE(mmu_offset3_w)
AM_RANGE(0xfe80, 0xfe80) AM_MIRROR(0x7f) AM_WRITE(mmu_offset4_w)
AM_RANGE(0xff00, 0xff00) AM_MIRROR(0x7f) AM_WRITE(mmu_offset5_w)
AM_RANGE(0xff80, 0xff83) AM_MIRROR(0x7c) AM_WRITE(lcd_w)
AM_RANGE(0xff80, 0xff80) AM_MIRROR(0x7c) AM_WRITE(lcd_scrollx_w)
AM_RANGE(0xff81, 0xff81) AM_MIRROR(0x7c) AM_WRITE(lcd_scrolly_w)
AM_RANGE(0xff82, 0xff82) AM_MIRROR(0x7c) AM_WRITE(lcd_mode_w)
AM_RANGE(0xff83, 0xff83) AM_MIRROR(0x7c) AM_WRITE(lcd_size_w)
ADDRESS_MAP_END
/* Input ports */
@ -578,21 +653,6 @@ void clcd_state::palette_init()
palette_set_color(machine(), 3, MAKE_RGB(32,240,32));
}
static const gfx_layout charset_6x8 =
{
6,8,
128,
1,
{ 0 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8 },
{ 7, 6, 5, 4, 3, 2, 1, 0 },
6*8
};
static GFXDECODE_START( clcd )
GFXDECODE_ENTRY( "maincpu", 0x1f700, charset_6x8, 0, 1 )
GFXDECODE_END
static MACHINE_CONFIG_START( clcd, clcd_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",M65C02, 2000000)
@ -643,7 +703,6 @@ static MACHINE_CONFIG_START( clcd, clcd_state )
MCFG_DEFAULT_LAYOUT(layout_lcd)
MCFG_PALETTE_LENGTH(4)
MCFG_GFXDECODE(clcd)
MCFG_RAM_ADD( "ram" )
MCFG_RAM_DEFAULT_VALUE(0)